/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 15:21:26,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 15:21:26,618 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 15:21:26,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 15:21:26,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 15:21:26,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 15:21:26,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 15:21:26,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 15:21:26,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 15:21:26,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 15:21:26,659 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 15:21:26,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 15:21:26,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 15:21:26,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 15:21:26,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 15:21:26,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 15:21:26,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 15:21:26,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 15:21:26,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 15:21:26,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 15:21:26,662 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 15:21:26,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 15:21:26,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 15:21:26,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 15:21:26,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 15:21:26,664 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 15:21:26,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 15:21:26,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:21:26,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 15:21:26,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 15:21:26,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 15:21:26,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 15:21:26,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 15:21:26,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 15:21:26,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 15:21:26,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 15:21:26,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 15:21:26,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 15:21:26,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 15:21:26,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 15:21:26,990 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 15:21:26,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 15:21:28,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 15:21:28,338 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 15:21:28,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 15:21:28,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7fd49014/ed45f78140de47d8b2e245a70fc5e85b/FLAGe9488ab77 [2023-08-27 15:21:28,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7fd49014/ed45f78140de47d8b2e245a70fc5e85b [2023-08-27 15:21:28,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 15:21:28,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 15:21:28,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 15:21:28,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 15:21:28,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 15:21:28,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c947cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28, skipping insertion in model container [2023-08-27 15:21:28,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,393 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 15:21:28,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:21:28,569 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 15:21:28,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:21:28,605 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:21:28,605 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:21:28,611 INFO L206 MainTranslator]: Completed translation [2023-08-27 15:21:28,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28 WrapperNode [2023-08-27 15:21:28,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 15:21:28,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 15:21:28,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 15:21:28,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 15:21:28,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,644 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2023-08-27 15:21:28,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 15:21:28,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 15:21:28,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 15:21:28,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 15:21:28,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 15:21:28,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 15:21:28,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 15:21:28,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 15:21:28,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (1/1) ... [2023-08-27 15:21:28,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:21:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:28,706 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 15:21:28,720 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 15:21:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 15:21:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 15:21:28,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 15:21:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 15:21:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 15:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 15:21:28,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 15:21:28,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 15:21:28,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 15:21:28,757 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 15:21:28,835 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 15:21:28,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 15:21:29,088 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 15:21:29,116 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 15:21:29,116 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 15:21:29,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:29 BoogieIcfgContainer [2023-08-27 15:21:29,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 15:21:29,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 15:21:29,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 15:21:29,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 15:21:29,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:21:28" (1/3) ... [2023-08-27 15:21:29,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22000c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:21:29, skipping insertion in model container [2023-08-27 15:21:29,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:28" (2/3) ... [2023-08-27 15:21:29,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22000c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:21:29, skipping insertion in model container [2023-08-27 15:21:29,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:29" (3/3) ... [2023-08-27 15:21:29,128 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-27 15:21:29,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 15:21:29,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 15:21:29,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 15:21:29,245 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 15:21:29,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 15:21:29,355 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2023-08-27 15:21:29,355 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 15:21:29,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-27 15:21:29,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 15:21:29,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 178 flow [2023-08-27 15:21:29,371 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 15:21:29,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 15:21:29,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 15:21:29,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-27 15:21:29,410 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-08-27 15:21:29,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 15:21:29,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-27 15:21:29,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-08-27 15:21:31,613 INFO L134 LiptonReduction]: Checked pairs total: 1106 [2023-08-27 15:21:31,613 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-27 15:21:31,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 15:21:31,631 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;@482bdf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 15:21:31,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 15:21:31,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 15:21:31,634 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 15:21:31,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 15:21:31,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:31,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:21:31,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:31,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 11338661, now seen corresponding path program 1 times [2023-08-27 15:21:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129186761] [2023-08-27 15:21:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:31,831 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 15:21:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129186761] [2023-08-27 15:21:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129186761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:31,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:31,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:21:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830344471] [2023-08-27 15:21:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:21:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:21:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:21:31,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 15:21:31,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 15:21:31,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:31,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 15:21:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:31,952 INFO L124 PetriNetUnfolderBase]: 100/179 cut-off events. [2023-08-27 15:21:31,953 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 15:21:31,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 179 events. 100/179 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 560 event pairs, 43 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 312. Up to 98 conditions per place. [2023-08-27 15:21:31,956 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 15:21:31,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2023-08-27 15:21:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:21:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:21:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-27 15:21:31,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221579961464354 [2023-08-27 15:21:31,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-27 15:21:31,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-27 15:21:31,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:31,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-27 15:21:31,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 15:21:31,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 15:21:31,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 15:21:31,987 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 3 states and 271 transitions. [2023-08-27 15:21:31,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2023-08-27 15:21:31,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 15:21:31,991 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 67 flow [2023-08-27 15:21:31,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-08-27 15:21:31,996 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-27 15:21:31,996 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 67 flow [2023-08-27 15:21:31,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 15:21:31,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:31,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:21:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 15:21:31,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:31,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash 11338662, now seen corresponding path program 1 times [2023-08-27 15:21:31,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:31,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731080561] [2023-08-27 15:21:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,123 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 15:21:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731080561] [2023-08-27 15:21:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731080561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:21:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151414996] [2023-08-27 15:21:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:21:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:21:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:21:32,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 15:21:32,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 67 flow. Second operand has 4 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 15:21:32,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 15:21:32,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,225 INFO L124 PetriNetUnfolderBase]: 84/153 cut-off events. [2023-08-27 15:21:32,226 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 15:21:32,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 153 events. 84/153 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 495 event pairs, 7 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 150. Up to 80 conditions per place. [2023-08-27 15:21:32,227 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-08-27 15:21:32,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 190 flow [2023-08-27 15:21:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:21:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:21:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-27 15:21:32,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479768786127168 [2023-08-27 15:21:32,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-27 15:21:32,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-27 15:21:32,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-27 15:21:32,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:21:32,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,233 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 67 flow. Second operand 4 states and 310 transitions. [2023-08-27 15:21:32,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 190 flow [2023-08-27 15:21:32,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:21:32,234 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2023-08-27 15:21:32,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-27 15:21:32,235 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 15:21:32,235 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2023-08-27 15:21:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 15:21:32,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:21:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 15:21:32,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 11338656, now seen corresponding path program 1 times [2023-08-27 15:21:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893593617] [2023-08-27 15:21:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,276 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 15:21:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893593617] [2023-08-27 15:21:32,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893593617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:21:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015383313] [2023-08-27 15:21:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:21:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:21:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:21:32,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 15:21:32,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 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 15:21:32,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 15:21:32,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,359 INFO L124 PetriNetUnfolderBase]: 67/124 cut-off events. [2023-08-27 15:21:32,360 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 15:21:32,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 124 events. 67/124 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 354 event pairs, 8 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 121. Up to 105 conditions per place. [2023-08-27 15:21:32,363 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-27 15:21:32,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 165 flow [2023-08-27 15:21:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:21:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:21:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-27 15:21:32,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44653179190751446 [2023-08-27 15:21:32,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-27 15:21:32,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-27 15:21:32,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-27 15:21:32,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 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 15:21:32,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,370 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 309 transitions. [2023-08-27 15:21:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 165 flow [2023-08-27 15:21:32,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:32,374 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 86 flow [2023-08-27 15:21:32,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-27 15:21:32,375 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 15:21:32,375 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 86 flow [2023-08-27 15:21:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 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 15:21:32,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 15:21:32,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 15:21:32,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797394, now seen corresponding path program 1 times [2023-08-27 15:21:32,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709018847] [2023-08-27 15:21:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,458 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 15:21:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709018847] [2023-08-27 15:21:32,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709018847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:21:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778206910] [2023-08-27 15:21:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:21:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:21:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:21:32,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 15:21:32,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 15:21:32,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 15:21:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,521 INFO L124 PetriNetUnfolderBase]: 56/105 cut-off events. [2023-08-27 15:21:32,521 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 15:21:32,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 105 events. 56/105 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 258 event pairs, 6 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 194. Up to 80 conditions per place. [2023-08-27 15:21:32,522 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-27 15:21:32,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 164 flow [2023-08-27 15:21:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:21:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:21:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-27 15:21:32,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421965317919075 [2023-08-27 15:21:32,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-27 15:21:32,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-27 15:21:32,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-27 15:21:32,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 15:21:32,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,527 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,527 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 86 flow. Second operand 4 states and 306 transitions. [2023-08-27 15:21:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 164 flow [2023-08-27 15:21:32,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:32,528 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 84 flow [2023-08-27 15:21:32,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-27 15:21:32,529 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 15:21:32,529 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 84 flow [2023-08-27 15:21:32,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 15:21:32,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 15:21:32,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 15:21:32,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797383, now seen corresponding path program 1 times [2023-08-27 15:21:32,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869563350] [2023-08-27 15:21:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,589 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 15:21:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869563350] [2023-08-27 15:21:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869563350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:21:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750142269] [2023-08-27 15:21:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:21:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:21:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:21:32,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 15:21:32,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 15:21:32,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 15:21:32,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,656 INFO L124 PetriNetUnfolderBase]: 48/93 cut-off events. [2023-08-27 15:21:32,657 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 15:21:32,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 93 events. 48/93 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 218 event pairs, 11 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 182. Up to 64 conditions per place. [2023-08-27 15:21:32,658 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-27 15:21:32,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 181 flow [2023-08-27 15:21:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:21:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:21:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-08-27 15:21:32,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434971098265896 [2023-08-27 15:21:32,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-08-27 15:21:32,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-08-27 15:21:32,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-08-27 15:21:32,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 15:21:32,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,664 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 84 flow. Second operand 4 states and 301 transitions. [2023-08-27 15:21:32,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 181 flow [2023-08-27 15:21:32,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:32,666 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 112 flow [2023-08-27 15:21:32,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-27 15:21:32,667 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-27 15:21:32,667 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 112 flow [2023-08-27 15:21:32,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 15:21:32,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:32,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 15:21:32,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash 371192656, now seen corresponding path program 1 times [2023-08-27 15:21:32,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058786432] [2023-08-27 15:21:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,743 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 15:21:32,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058786432] [2023-08-27 15:21:32,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058786432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:32,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306528970] [2023-08-27 15:21:32,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:32,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:32,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:32,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:32,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,854 INFO L124 PetriNetUnfolderBase]: 59/108 cut-off events. [2023-08-27 15:21:32,854 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 15:21:32,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 108 events. 59/108 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 2 based on Foata normal form. 4/102 useless extension candidates. Maximal degree in co-relation 154. Up to 32 conditions per place. [2023-08-27 15:21:32,855 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-27 15:21:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 272 flow [2023-08-27 15:21:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 545 transitions. [2023-08-27 15:21:32,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39378612716763006 [2023-08-27 15:21:32,858 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 545 transitions. [2023-08-27 15:21:32,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 545 transitions. [2023-08-27 15:21:32,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 545 transitions. [2023-08-27 15:21:32,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 15:21:32,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:32,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:32,862 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 112 flow. Second operand 8 states and 545 transitions. [2023-08-27 15:21:32,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 272 flow [2023-08-27 15:21:32,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:21:32,864 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 175 flow [2023-08-27 15:21:32,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 15:21:32,865 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-08-27 15:21:32,865 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 175 flow [2023-08-27 15:21:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:32,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 15:21:32,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687735, now seen corresponding path program 1 times [2023-08-27 15:21:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460093547] [2023-08-27 15:21:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:32,899 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 15:21:32,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:32,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460093547] [2023-08-27 15:21:32,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460093547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:32,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:32,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:21:32,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704071585] [2023-08-27 15:21:32,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:32,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:21:32,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:32,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:21:32,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:21:32,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 15:21:32,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 175 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 15:21:32,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:32,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 15:21:32,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:32,956 INFO L124 PetriNetUnfolderBase]: 51/94 cut-off events. [2023-08-27 15:21:32,956 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 15:21:32,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 94 events. 51/94 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 11 based on Foata normal form. 8/102 useless extension candidates. Maximal degree in co-relation 254. Up to 64 conditions per place. [2023-08-27 15:21:32,957 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-27 15:21:32,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 234 flow [2023-08-27 15:21:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:21:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:21:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-08-27 15:21:32,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48554913294797686 [2023-08-27 15:21:32,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-08-27 15:21:32,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-08-27 15:21:32,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:32,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-08-27 15:21:32,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 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 15:21:32,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 15:21:32,962 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 175 flow. Second operand 4 states and 336 transitions. [2023-08-27 15:21:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 234 flow [2023-08-27 15:21:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 194 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-27 15:21:32,967 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 127 flow [2023-08-27 15:21:32,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 15:21:32,969 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-27 15:21:32,971 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 127 flow [2023-08-27 15:21:32,973 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 15:21:32,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:32,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:32,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 15:21:32,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:32,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 371147987, now seen corresponding path program 1 times [2023-08-27 15:21:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:32,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209545216] [2023-08-27 15:21:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:33,090 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 15:21:33,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209545216] [2023-08-27 15:21:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209545216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:33,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:33,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:33,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342901107] [2023-08-27 15:21:33,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:33,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:33,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:33,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:33,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:33,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:33,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:33,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:33,187 INFO L124 PetriNetUnfolderBase]: 61/108 cut-off events. [2023-08-27 15:21:33,187 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-27 15:21:33,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 108 events. 61/108 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 244 event pairs, 7 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 244. Up to 71 conditions per place. [2023-08-27 15:21:33,188 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 30 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2023-08-27 15:21:33,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 272 flow [2023-08-27 15:21:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:21:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:21:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 15:21:33,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 15:21:33,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:33,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 15:21:33,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:33,194 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:33,194 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 127 flow. Second operand 6 states and 413 transitions. [2023-08-27 15:21:33,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 272 flow [2023-08-27 15:21:33,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:33,197 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 194 flow [2023-08-27 15:21:33,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-27 15:21:33,199 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2023-08-27 15:21:33,200 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 194 flow [2023-08-27 15:21:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:33,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:33,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 15:21:33,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:33,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687736, now seen corresponding path program 2 times [2023-08-27 15:21:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:33,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644656418] [2023-08-27 15:21:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:33,287 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 15:21:33,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:33,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644656418] [2023-08-27 15:21:33,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644656418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:33,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:33,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:33,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285054946] [2023-08-27 15:21:33,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:33,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:33,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:33,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:33,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:33,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:33,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:33,431 INFO L124 PetriNetUnfolderBase]: 68/119 cut-off events. [2023-08-27 15:21:33,431 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 15:21:33,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 119 events. 68/119 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 275 event pairs, 6 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 366. Up to 80 conditions per place. [2023-08-27 15:21:33,433 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2023-08-27 15:21:33,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 356 flow [2023-08-27 15:21:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 544 transitions. [2023-08-27 15:21:33,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 15:21:33,435 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 544 transitions. [2023-08-27 15:21:33,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 544 transitions. [2023-08-27 15:21:33,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:33,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 544 transitions. [2023-08-27 15:21:33,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 15:21:33,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:33,439 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:33,439 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 194 flow. Second operand 8 states and 544 transitions. [2023-08-27 15:21:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 356 flow [2023-08-27 15:21:33,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 334 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:33,441 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 220 flow [2023-08-27 15:21:33,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-27 15:21:33,441 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-27 15:21:33,442 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 220 flow [2023-08-27 15:21:33,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:33,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:33,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 15:21:33,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:33,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1948177817, now seen corresponding path program 2 times [2023-08-27 15:21:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818924566] [2023-08-27 15:21:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:33,502 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 15:21:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:33,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818924566] [2023-08-27 15:21:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818924566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106425132] [2023-08-27 15:21:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:33,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:33,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:33,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:33,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:33,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:33,601 INFO L124 PetriNetUnfolderBase]: 71/124 cut-off events. [2023-08-27 15:21:33,601 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-27 15:21:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 124 events. 71/124 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 296 event pairs, 6 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 408. Up to 69 conditions per place. [2023-08-27 15:21:33,602 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 35 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2023-08-27 15:21:33,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 384 flow [2023-08-27 15:21:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 538 transitions. [2023-08-27 15:21:33,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38872832369942195 [2023-08-27 15:21:33,604 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 538 transitions. [2023-08-27 15:21:33,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 538 transitions. [2023-08-27 15:21:33,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:33,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 538 transitions. [2023-08-27 15:21:33,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.25) internal successors, (538), 8 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 15:21:33,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:33,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:33,609 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 220 flow. Second operand 8 states and 538 transitions. [2023-08-27 15:21:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 384 flow [2023-08-27 15:21:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 342 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-27 15:21:33,611 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 229 flow [2023-08-27 15:21:33,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-27 15:21:33,611 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 15:21:33,612 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 229 flow [2023-08-27 15:21:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:33,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 15:21:33,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:33,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120186, now seen corresponding path program 3 times [2023-08-27 15:21:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:33,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324619465] [2023-08-27 15:21:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:33,676 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 15:21:33,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324619465] [2023-08-27 15:21:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324619465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:33,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:33,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:33,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391735001] [2023-08-27 15:21:33,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:33,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:33,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:33,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:33,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:33,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:33,787 INFO L124 PetriNetUnfolderBase]: 85/144 cut-off events. [2023-08-27 15:21:33,787 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-27 15:21:33,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 144 events. 85/144 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 11 based on Foata normal form. 4/146 useless extension candidates. Maximal degree in co-relation 490. Up to 100 conditions per place. [2023-08-27 15:21:33,789 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2023-08-27 15:21:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 427 flow [2023-08-27 15:21:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:21:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:21:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 15:21:33,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 15:21:33,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:33,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 15:21:33,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 15:21:33,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:33,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:33,795 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 229 flow. Second operand 6 states and 413 transitions. [2023-08-27 15:21:33,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 427 flow [2023-08-27 15:21:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 375 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-27 15:21:33,798 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 275 flow [2023-08-27 15:21:33,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 15:21:33,798 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 15:21:33,799 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 275 flow [2023-08-27 15:21:33,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:33,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 15:21:33,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:33,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120157, now seen corresponding path program 3 times [2023-08-27 15:21:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284452133] [2023-08-27 15:21:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:33,869 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 15:21:33,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284452133] [2023-08-27 15:21:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284452133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:33,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:21:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310829013] [2023-08-27 15:21:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:33,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:21:33,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:21:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:21:33,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:33,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:33,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,002 INFO L124 PetriNetUnfolderBase]: 88/149 cut-off events. [2023-08-27 15:21:34,002 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-27 15:21:34,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 149 events. 88/149 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 372 event pairs, 8 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 518. Up to 107 conditions per place. [2023-08-27 15:21:34,004 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 42 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2023-08-27 15:21:34,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 474 flow [2023-08-27 15:21:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2023-08-27 15:21:34,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916184971098266 [2023-08-27 15:21:34,007 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 542 transitions. [2023-08-27 15:21:34,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 542 transitions. [2023-08-27 15:21:34,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 542 transitions. [2023-08-27 15:21:34,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 15:21:34,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:34,011 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:34,011 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 275 flow. Second operand 8 states and 542 transitions. [2023-08-27 15:21:34,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 474 flow [2023-08-27 15:21:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 434 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:34,015 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 293 flow [2023-08-27 15:21:34,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-27 15:21:34,015 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-08-27 15:21:34,015 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 293 flow [2023-08-27 15:21:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:21:34,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:34,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 15:21:34,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:34,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash 250162263, now seen corresponding path program 1 times [2023-08-27 15:21:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313875729] [2023-08-27 15:21:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,048 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 15:21:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313875729] [2023-08-27 15:21:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313875729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368082793] [2023-08-27 15:21:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:34,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:34,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:34,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:34,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,162 INFO L124 PetriNetUnfolderBase]: 140/243 cut-off events. [2023-08-27 15:21:34,162 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-08-27 15:21:34,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 243 events. 140/243 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 780 event pairs, 16 based on Foata normal form. 4/241 useless extension candidates. Maximal degree in co-relation 774. Up to 78 conditions per place. [2023-08-27 15:21:34,165 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 51 selfloop transitions, 34 changer transitions 0/85 dead transitions. [2023-08-27 15:21:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 691 flow [2023-08-27 15:21:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 499 transitions. [2023-08-27 15:21:34,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412056151940545 [2023-08-27 15:21:34,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 499 transitions. [2023-08-27 15:21:34,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 499 transitions. [2023-08-27 15:21:34,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 499 transitions. [2023-08-27 15:21:34,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 15:21:34,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:34,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:34,172 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 293 flow. Second operand 7 states and 499 transitions. [2023-08-27 15:21:34,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 691 flow [2023-08-27 15:21:34,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 633 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 15:21:34,177 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 524 flow [2023-08-27 15:21:34,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-27 15:21:34,177 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-27 15:21:34,178 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 524 flow [2023-08-27 15:21:34,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:34,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:34,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 15:21:34,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:34,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 248778423, now seen corresponding path program 2 times [2023-08-27 15:21:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952016254] [2023-08-27 15:21:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,211 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 15:21:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952016254] [2023-08-27 15:21:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952016254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332235921] [2023-08-27 15:21:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:34,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:34,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:34,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:34,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,356 INFO L124 PetriNetUnfolderBase]: 155/288 cut-off events. [2023-08-27 15:21:34,356 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2023-08-27 15:21:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 288 events. 155/288 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1069 event pairs, 18 based on Foata normal form. 8/296 useless extension candidates. Maximal degree in co-relation 1083. Up to 80 conditions per place. [2023-08-27 15:21:34,359 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2023-08-27 15:21:34,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 987 flow [2023-08-27 15:21:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 580 transitions. [2023-08-27 15:21:34,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190751445086705 [2023-08-27 15:21:34,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 580 transitions. [2023-08-27 15:21:34,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 580 transitions. [2023-08-27 15:21:34,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 580 transitions. [2023-08-27 15:21:34,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.5) internal successors, (580), 8 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 15:21:34,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:34,366 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:34,367 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 524 flow. Second operand 8 states and 580 transitions. [2023-08-27 15:21:34,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 987 flow [2023-08-27 15:21:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 951 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-27 15:21:34,374 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 711 flow [2023-08-27 15:21:34,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-27 15:21:34,375 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-08-27 15:21:34,375 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 711 flow [2023-08-27 15:21:34,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:34,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 15:21:34,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:34,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 248773434, now seen corresponding path program 1 times [2023-08-27 15:21:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337776073] [2023-08-27 15:21:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,419 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 15:21:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337776073] [2023-08-27 15:21:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337776073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672262093] [2023-08-27 15:21:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:34,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:34,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:34,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:34,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,518 INFO L124 PetriNetUnfolderBase]: 164/325 cut-off events. [2023-08-27 15:21:34,518 INFO L125 PetriNetUnfolderBase]: For 1993/1993 co-relation queries the response was YES. [2023-08-27 15:21:34,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 325 events. 164/325 cut-off events. For 1993/1993 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1331 event pairs, 12 based on Foata normal form. 10/335 useless extension candidates. Maximal degree in co-relation 1427. Up to 217 conditions per place. [2023-08-27 15:21:34,521 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 74 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2023-08-27 15:21:34,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 997 flow [2023-08-27 15:21:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:21:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:21:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2023-08-27 15:21:34,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41965317919075146 [2023-08-27 15:21:34,523 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 363 transitions. [2023-08-27 15:21:34,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 363 transitions. [2023-08-27 15:21:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 363 transitions. [2023-08-27 15:21:34,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 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 15:21:34,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:34,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:34,526 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 711 flow. Second operand 5 states and 363 transitions. [2023-08-27 15:21:34,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 997 flow [2023-08-27 15:21:34,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 926 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 15:21:34,535 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 707 flow [2023-08-27 15:21:34,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=707, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-27 15:21:34,536 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2023-08-27 15:21:34,536 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 707 flow [2023-08-27 15:21:34,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:34,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 15:21:34,536 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:34,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash 248777154, now seen corresponding path program 2 times [2023-08-27 15:21:34,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:34,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903236985] [2023-08-27 15:21:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,565 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 15:21:34,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:34,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903236985] [2023-08-27 15:21:34,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903236985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:34,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:34,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:34,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10118861] [2023-08-27 15:21:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:34,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:34,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:34,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:34,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 707 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:34,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:34,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,670 INFO L124 PetriNetUnfolderBase]: 175/354 cut-off events. [2023-08-27 15:21:34,670 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2023-08-27 15:21:34,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 354 events. 175/354 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1518 event pairs, 8 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1739. Up to 135 conditions per place. [2023-08-27 15:21:34,674 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 63 selfloop transitions, 28 changer transitions 0/91 dead transitions. [2023-08-27 15:21:34,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 1042 flow [2023-08-27 15:21:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:21:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:21:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 15:21:34,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123314065510597 [2023-08-27 15:21:34,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 15:21:34,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 15:21:34,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 15:21:34,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:21:34,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:34,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:34,679 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 707 flow. Second operand 6 states and 428 transitions. [2023-08-27 15:21:34,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 1042 flow [2023-08-27 15:21:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 1010 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:34,689 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 783 flow [2023-08-27 15:21:34,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-08-27 15:21:34,690 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-08-27 15:21:34,690 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 783 flow [2023-08-27 15:21:34,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:34,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 15:21:34,691 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:34,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash 248783044, now seen corresponding path program 1 times [2023-08-27 15:21:34,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:34,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723148538] [2023-08-27 15:21:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,718 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 15:21:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723148538] [2023-08-27 15:21:34,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723148538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176854680] [2023-08-27 15:21:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:34,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:34,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:34,725 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 15:21:34,749 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 15:21:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:34,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:21:34,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:34,822 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 15:21:34,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:34,860 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 15:21:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176854680] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:21:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 15:21:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799665102] [2023-08-27 15:21:34,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:34,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:34,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:34,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:34,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:34,988 INFO L124 PetriNetUnfolderBase]: 164/333 cut-off events. [2023-08-27 15:21:34,988 INFO L125 PetriNetUnfolderBase]: For 2492/2492 co-relation queries the response was YES. [2023-08-27 15:21:34,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 333 events. 164/333 cut-off events. For 2492/2492 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1415 event pairs, 24 based on Foata normal form. 6/339 useless extension candidates. Maximal degree in co-relation 1711. Up to 124 conditions per place. [2023-08-27 15:21:34,993 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 66 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2023-08-27 15:21:34,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 1049 flow [2023-08-27 15:21:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:21:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:21:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2023-08-27 15:21:34,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229287090558767 [2023-08-27 15:21:34,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2023-08-27 15:21:34,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2023-08-27 15:21:34,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:34,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2023-08-27 15:21:34,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 15:21:34,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:34,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:34,999 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 783 flow. Second operand 6 states and 439 transitions. [2023-08-27 15:21:34,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 1049 flow [2023-08-27 15:21:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 1017 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:35,009 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 792 flow [2023-08-27 15:21:35,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2023-08-27 15:21:35,010 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 52 predicate places. [2023-08-27 15:21:35,010 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 792 flow [2023-08-27 15:21:35,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:35,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:35,026 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 15:21:35,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 15:21:35,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:35,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash 262184373, now seen corresponding path program 3 times [2023-08-27 15:21:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731982116] [2023-08-27 15:21:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:35,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:35,248 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 15:21:35,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731982116] [2023-08-27 15:21:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731982116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:35,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:35,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122814290] [2023-08-27 15:21:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:35,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:35,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:35,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:35,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:35,355 INFO L124 PetriNetUnfolderBase]: 148/297 cut-off events. [2023-08-27 15:21:35,355 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2023-08-27 15:21:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 297 events. 148/297 cut-off events. For 2410/2410 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1182 event pairs, 14 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1553. Up to 95 conditions per place. [2023-08-27 15:21:35,359 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 61 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2023-08-27 15:21:35,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 1067 flow [2023-08-27 15:21:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:21:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:21:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2023-08-27 15:21:35,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41329479768786126 [2023-08-27 15:21:35,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2023-08-27 15:21:35,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2023-08-27 15:21:35,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:35,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2023-08-27 15:21:35,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 15:21:35,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:35,367 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 15:21:35,367 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 792 flow. Second operand 6 states and 429 transitions. [2023-08-27 15:21:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 1067 flow [2023-08-27 15:21:35,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 1021 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 15:21:35,377 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 822 flow [2023-08-27 15:21:35,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2023-08-27 15:21:35,378 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2023-08-27 15:21:35,378 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 822 flow [2023-08-27 15:21:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:35,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 15:21:35,379 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:35,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 263970564, now seen corresponding path program 3 times [2023-08-27 15:21:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377181952] [2023-08-27 15:21:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:35,427 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 15:21:35,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377181952] [2023-08-27 15:21:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377181952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:35,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:35,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950452742] [2023-08-27 15:21:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:35,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:35,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:35,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:35,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:35,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:35,550 INFO L124 PetriNetUnfolderBase]: 188/399 cut-off events. [2023-08-27 15:21:35,550 INFO L125 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2023-08-27 15:21:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 399 events. 188/399 cut-off events. For 3104/3104 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1871 event pairs, 28 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 2115. Up to 141 conditions per place. [2023-08-27 15:21:35,554 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 48 changer transitions 0/106 dead transitions. [2023-08-27 15:21:35,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1383 flow [2023-08-27 15:21:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2023-08-27 15:21:35,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087530966143683 [2023-08-27 15:21:35,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2023-08-27 15:21:35,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2023-08-27 15:21:35,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:35,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2023-08-27 15:21:35,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:21:35,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:35,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:35,559 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 822 flow. Second operand 7 states and 495 transitions. [2023-08-27 15:21:35,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1383 flow [2023-08-27 15:21:35,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 106 transitions, 1368 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 15:21:35,572 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 1231 flow [2023-08-27 15:21:35,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1231, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-08-27 15:21:35,572 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2023-08-27 15:21:35,572 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 1231 flow [2023-08-27 15:21:35,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:35,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:35,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 15:21:35,573 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:35,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash 262179384, now seen corresponding path program 4 times [2023-08-27 15:21:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:35,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237561154] [2023-08-27 15:21:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:35,622 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 15:21:35,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:35,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237561154] [2023-08-27 15:21:35,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237561154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:35,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:35,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240084948] [2023-08-27 15:21:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:35,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:35,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:35,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 1231 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:35,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:35,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:35,746 INFO L124 PetriNetUnfolderBase]: 176/373 cut-off events. [2023-08-27 15:21:35,746 INFO L125 PetriNetUnfolderBase]: For 3934/3934 co-relation queries the response was YES. [2023-08-27 15:21:35,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 373 events. 176/373 cut-off events. For 3934/3934 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1684 event pairs, 49 based on Foata normal form. 10/383 useless extension candidates. Maximal degree in co-relation 2229. Up to 233 conditions per place. [2023-08-27 15:21:35,750 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 85 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2023-08-27 15:21:35,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 1503 flow [2023-08-27 15:21:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:21:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:21:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-27 15:21:35,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42427745664739885 [2023-08-27 15:21:35,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-27 15:21:35,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-27 15:21:35,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:35,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-27 15:21:35,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 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 15:21:35,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:35,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:35,758 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 1231 flow. Second operand 5 states and 367 transitions. [2023-08-27 15:21:35,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 1503 flow [2023-08-27 15:21:35,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 104 transitions, 1459 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-27 15:21:35,773 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 1250 flow [2023-08-27 15:21:35,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1250, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-08-27 15:21:35,774 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2023-08-27 15:21:35,774 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 1250 flow [2023-08-27 15:21:35,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:35,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:35,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 15:21:35,775 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:35,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 262183104, now seen corresponding path program 5 times [2023-08-27 15:21:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951995486] [2023-08-27 15:21:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:35,804 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 15:21:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951995486] [2023-08-27 15:21:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951995486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:35,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513008762] [2023-08-27 15:21:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:21:35,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 1250 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:35,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:35,939 INFO L124 PetriNetUnfolderBase]: 171/358 cut-off events. [2023-08-27 15:21:35,939 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2023-08-27 15:21:35,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 358 events. 171/358 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1587 event pairs, 22 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 2181. Up to 98 conditions per place. [2023-08-27 15:21:35,943 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 38 changer transitions 0/109 dead transitions. [2023-08-27 15:21:35,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 1560 flow [2023-08-27 15:21:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:21:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:21:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 570 transitions. [2023-08-27 15:21:35,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 15:21:35,945 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 570 transitions. [2023-08-27 15:21:35,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 570 transitions. [2023-08-27 15:21:35,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:35,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 570 transitions. [2023-08-27 15:21:35,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.25) internal successors, (570), 8 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 15:21:35,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:35,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 15:21:35,953 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 1250 flow. Second operand 8 states and 570 transitions. [2023-08-27 15:21:35,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 1560 flow [2023-08-27 15:21:35,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 1533 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 15:21:35,968 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1261 flow [2023-08-27 15:21:35,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-08-27 15:21:35,968 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-08-27 15:21:35,968 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1261 flow [2023-08-27 15:21:35,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:35,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:35,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:35,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 15:21:35,969 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:35,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:35,969 INFO L85 PathProgramCache]: Analyzing trace with hash 262188994, now seen corresponding path program 2 times [2023-08-27 15:21:35,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:35,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099695698] [2023-08-27 15:21:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:35,997 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 15:21:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099695698] [2023-08-27 15:21:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099695698] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:35,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509871049] [2023-08-27 15:21:35,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:21:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:36,001 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 15:21:36,029 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 15:21:36,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:21:36,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:36,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:21:36,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:36,080 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 15:21:36,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:36,113 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 15:21:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509871049] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:36,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:21:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 15:21:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174652402] [2023-08-27 15:21:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:36,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:21:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:21:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:36,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:36,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 1261 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:36,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:36,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:36,245 INFO L124 PetriNetUnfolderBase]: 160/337 cut-off events. [2023-08-27 15:21:36,245 INFO L125 PetriNetUnfolderBase]: For 3522/3522 co-relation queries the response was YES. [2023-08-27 15:21:36,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 337 events. 160/337 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1464 event pairs, 14 based on Foata normal form. 6/343 useless extension candidates. Maximal degree in co-relation 2087. Up to 149 conditions per place. [2023-08-27 15:21:36,249 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 63 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2023-08-27 15:21:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 92 transitions, 1433 flow [2023-08-27 15:21:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:21:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:21:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-27 15:21:36,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161849710982659 [2023-08-27 15:21:36,251 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-27 15:21:36,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-27 15:21:36,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:36,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-27 15:21:36,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 15:21:36,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:36,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 15:21:36,254 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1261 flow. Second operand 5 states and 360 transitions. [2023-08-27 15:21:36,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 92 transitions, 1433 flow [2023-08-27 15:21:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 92 transitions, 1351 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 15:21:36,269 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 1145 flow [2023-08-27 15:21:36,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1145, PETRI_PLACES=102, PETRI_TRANSITIONS=79} [2023-08-27 15:21:36,269 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2023-08-27 15:21:36,269 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 1145 flow [2023-08-27 15:21:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 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 15:21:36,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:36,277 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 15:21:36,474 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,SelfDestructingSolverStorable21 [2023-08-27 15:21:36,475 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:36,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1920685740, now seen corresponding path program 1 times [2023-08-27 15:21:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919252833] [2023-08-27 15:21:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:36,538 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 15:21:36,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919252833] [2023-08-27 15:21:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919252833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282811199] [2023-08-27 15:21:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:36,540 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 15:21:36,543 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 15:21:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:36,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 15:21:36,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:36,675 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 15:21:36,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:36,756 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 15:21:36,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282811199] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:36,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:36,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 15:21:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527656013] [2023-08-27 15:21:36,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 15:21:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 15:21:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-27 15:21:36,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:36,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 79 transitions, 1145 flow. Second operand has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 15:21:36,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:36,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:36,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:37,297 INFO L124 PetriNetUnfolderBase]: 156/359 cut-off events. [2023-08-27 15:21:37,298 INFO L125 PetriNetUnfolderBase]: For 3179/3179 co-relation queries the response was YES. [2023-08-27 15:21:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 359 events. 156/359 cut-off events. For 3179/3179 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1715 event pairs, 0 based on Foata normal form. 18/377 useless extension candidates. Maximal degree in co-relation 2045. Up to 69 conditions per place. [2023-08-27 15:21:37,302 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 76 selfloop transitions, 65 changer transitions 0/141 dead transitions. [2023-08-27 15:21:37,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 141 transitions, 1687 flow [2023-08-27 15:21:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 15:21:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 15:21:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1543 transitions. [2023-08-27 15:21:37,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38778587584820307 [2023-08-27 15:21:37,306 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1543 transitions. [2023-08-27 15:21:37,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1543 transitions. [2023-08-27 15:21:37,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:37,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1543 transitions. [2023-08-27 15:21:37,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 67.08695652173913) internal successors, (1543), 23 states have internal predecessors, (1543), 0 states have call successors, (0), 0 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 15:21:37,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 173.0) internal successors, (4152), 24 states have internal predecessors, (4152), 0 states have call successors, (0), 0 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 15:21:37,315 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 173.0) internal successors, (4152), 24 states have internal predecessors, (4152), 0 states have call successors, (0), 0 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 15:21:37,315 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 1145 flow. Second operand 23 states and 1543 transitions. [2023-08-27 15:21:37,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 141 transitions, 1687 flow [2023-08-27 15:21:37,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 141 transitions, 1583 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-27 15:21:37,329 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 1205 flow [2023-08-27 15:21:37,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1205, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2023-08-27 15:21:37,330 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 15:21:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 1205 flow [2023-08-27 15:21:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 15:21:37,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:37,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:37,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 15:21:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:37,536 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:37,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -255361630, now seen corresponding path program 1 times [2023-08-27 15:21:37,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:37,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77647274] [2023-08-27 15:21:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77647274] [2023-08-27 15:21:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77647274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311183453] [2023-08-27 15:21:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:37,580 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 15:21:37,618 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 15:21:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:37,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 15:21:37,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:37,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311183453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:37,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 15:21:37,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39419802] [2023-08-27 15:21:37,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:37,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 15:21:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:37,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 15:21:37,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-27 15:21:37,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:37,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 1205 flow. Second operand has 11 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 15:21:37,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:37,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:37,945 INFO L124 PetriNetUnfolderBase]: 184/431 cut-off events. [2023-08-27 15:21:37,945 INFO L125 PetriNetUnfolderBase]: For 3389/3389 co-relation queries the response was YES. [2023-08-27 15:21:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 431 events. 184/431 cut-off events. For 3389/3389 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2187 event pairs, 14 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 2414. Up to 77 conditions per place. [2023-08-27 15:21:37,950 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 77 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2023-08-27 15:21:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 135 transitions, 1871 flow [2023-08-27 15:21:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 15:21:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 15:21:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 855 transitions. [2023-08-27 15:21:37,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 15:21:37,952 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 855 transitions. [2023-08-27 15:21:37,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 855 transitions. [2023-08-27 15:21:37,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:37,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 855 transitions. [2023-08-27 15:21:37,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.25) internal successors, (855), 12 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 15:21:37,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 15:21:37,956 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 15:21:37,956 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 1205 flow. Second operand 12 states and 855 transitions. [2023-08-27 15:21:37,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 135 transitions, 1871 flow [2023-08-27 15:21:37,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 1647 flow, removed 28 selfloop flow, removed 16 redundant places. [2023-08-27 15:21:37,971 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 1359 flow [2023-08-27 15:21:37,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1359, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2023-08-27 15:21:37,972 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 15:21:37,972 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 1359 flow [2023-08-27 15:21:37,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 15:21:37,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:37,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:37,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 15:21:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:38,178 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:38,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -839521477, now seen corresponding path program 2 times [2023-08-27 15:21:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702462066] [2023-08-27 15:21:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:38,248 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 15:21:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702462066] [2023-08-27 15:21:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702462066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194215891] [2023-08-27 15:21:38,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:21:38,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:38,250 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 15:21:38,252 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 15:21:38,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:21:38,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:38,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 15:21:38,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:38,389 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 15:21:38,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:38,465 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 15:21:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194215891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:38,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 15:21:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893562714] [2023-08-27 15:21:38,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 15:21:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 15:21:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-27 15:21:38,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:38,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 1359 flow. Second operand has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 15:21:38,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:38,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:38,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:38,869 INFO L124 PetriNetUnfolderBase]: 202/475 cut-off events. [2023-08-27 15:21:38,869 INFO L125 PetriNetUnfolderBase]: For 4246/4246 co-relation queries the response was YES. [2023-08-27 15:21:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 475 events. 202/475 cut-off events. For 4246/4246 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2488 event pairs, 4 based on Foata normal form. 10/485 useless extension candidates. Maximal degree in co-relation 2681. Up to 100 conditions per place. [2023-08-27 15:21:38,874 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 77 selfloop transitions, 68 changer transitions 0/145 dead transitions. [2023-08-27 15:21:38,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 145 transitions, 2027 flow [2023-08-27 15:21:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 15:21:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 15:21:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1016 transitions. [2023-08-27 15:21:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915221579961464 [2023-08-27 15:21:38,876 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1016 transitions. [2023-08-27 15:21:38,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1016 transitions. [2023-08-27 15:21:38,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:38,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1016 transitions. [2023-08-27 15:21:38,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.73333333333333) internal successors, (1016), 15 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 15:21:38,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 15:21:38,913 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 15:21:38,913 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 1359 flow. Second operand 15 states and 1016 transitions. [2023-08-27 15:21:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 145 transitions, 2027 flow [2023-08-27 15:21:38,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 145 transitions, 1913 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-27 15:21:38,932 INFO L231 Difference]: Finished difference. Result has 133 places, 102 transitions, 1590 flow [2023-08-27 15:21:38,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1590, PETRI_PLACES=133, PETRI_TRANSITIONS=102} [2023-08-27 15:21:38,933 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 105 predicate places. [2023-08-27 15:21:38,933 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 102 transitions, 1590 flow [2023-08-27 15:21:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 15:21:38,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:38,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:38,944 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 15:21:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 15:21:39,144 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:39,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1437766420, now seen corresponding path program 3 times [2023-08-27 15:21:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116188684] [2023-08-27 15:21:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:21:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116188684] [2023-08-27 15:21:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116188684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779696528] [2023-08-27 15:21:39,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:21:39,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:39,228 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 15:21:39,254 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 15:21:39,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 15:21:39,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:39,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 15:21:39,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:21:39,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779696528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:39,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2023-08-27 15:21:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837778702] [2023-08-27 15:21:39,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:39,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 15:21:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 15:21:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-27 15:21:39,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 15:21:39,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 102 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 15:21:39,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:39,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 15:21:39,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:39,582 INFO L124 PetriNetUnfolderBase]: 261/630 cut-off events. [2023-08-27 15:21:39,583 INFO L125 PetriNetUnfolderBase]: For 6902/6902 co-relation queries the response was YES. [2023-08-27 15:21:39,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 630 events. 261/630 cut-off events. For 6902/6902 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3659 event pairs, 22 based on Foata normal form. 4/634 useless extension candidates. Maximal degree in co-relation 3849. Up to 225 conditions per place. [2023-08-27 15:21:39,589 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 85 selfloop transitions, 72 changer transitions 0/157 dead transitions. [2023-08-27 15:21:39,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 157 transitions, 2624 flow [2023-08-27 15:21:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 15:21:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 15:21:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 635 transitions. [2023-08-27 15:21:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40783558124598585 [2023-08-27 15:21:39,592 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 635 transitions. [2023-08-27 15:21:39,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 635 transitions. [2023-08-27 15:21:39,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:39,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 635 transitions. [2023-08-27 15:21:39,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:21:39,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 15:21:39,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 15:21:39,596 INFO L175 Difference]: Start difference. First operand has 133 places, 102 transitions, 1590 flow. Second operand 9 states and 635 transitions. [2023-08-27 15:21:39,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 157 transitions, 2624 flow [2023-08-27 15:21:39,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 157 transitions, 2482 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-27 15:21:39,625 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 2302 flow [2023-08-27 15:21:39,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2302, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2023-08-27 15:21:39,626 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2023-08-27 15:21:39,626 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 2302 flow [2023-08-27 15:21:39,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 15:21:39,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:39,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:39,635 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 15:21:39,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 15:21:39,836 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:39,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash -877659847, now seen corresponding path program 4 times [2023-08-27 15:21:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069304868] [2023-08-27 15:21:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:39,919 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 15:21:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069304868] [2023-08-27 15:21:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069304868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460584710] [2023-08-27 15:21:39,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 15:21:39,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:39,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:39,921 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 15:21:39,947 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 15:21:39,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 15:21:39,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:39,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 15:21:39,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:40,042 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 15:21:40,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:40,130 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 15:21:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460584710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:40,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:40,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 15:21:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252497444] [2023-08-27 15:21:40,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 15:21:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:40,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 15:21:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-08-27 15:21:40,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:40,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 2302 flow. Second operand has 19 states, 19 states have (on average 63.578947368421055) internal successors, (1208), 19 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 15:21:40,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:40,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:40,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:40,780 INFO L124 PetriNetUnfolderBase]: 302/689 cut-off events. [2023-08-27 15:21:40,780 INFO L125 PetriNetUnfolderBase]: For 10281/10281 co-relation queries the response was YES. [2023-08-27 15:21:40,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 689 events. 302/689 cut-off events. For 10281/10281 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3901 event pairs, 7 based on Foata normal form. 10/699 useless extension candidates. Maximal degree in co-relation 4522. Up to 144 conditions per place. [2023-08-27 15:21:40,788 INFO L140 encePairwiseOnDemand]: 163/173 looper letters, 82 selfloop transitions, 124 changer transitions 0/206 dead transitions. [2023-08-27 15:21:40,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 206 transitions, 3439 flow [2023-08-27 15:21:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 15:21:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 15:21:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1678 transitions. [2023-08-27 15:21:40,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38797687861271674 [2023-08-27 15:21:40,794 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1678 transitions. [2023-08-27 15:21:40,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1678 transitions. [2023-08-27 15:21:40,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:40,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1678 transitions. [2023-08-27 15:21:40,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 67.12) internal successors, (1678), 25 states have internal predecessors, (1678), 0 states have call successors, (0), 0 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 15:21:40,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 173.0) internal successors, (4498), 26 states have internal predecessors, (4498), 0 states have call successors, (0), 0 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 15:21:40,803 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 173.0) internal successors, (4498), 26 states have internal predecessors, (4498), 0 states have call successors, (0), 0 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 15:21:40,803 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 2302 flow. Second operand 25 states and 1678 transitions. [2023-08-27 15:21:40,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 206 transitions, 3439 flow [2023-08-27 15:21:40,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 206 transitions, 3346 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-08-27 15:21:40,847 INFO L231 Difference]: Finished difference. Result has 175 places, 156 transitions, 3067 flow [2023-08-27 15:21:40,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3067, PETRI_PLACES=175, PETRI_TRANSITIONS=156} [2023-08-27 15:21:40,848 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2023-08-27 15:21:40,848 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 156 transitions, 3067 flow [2023-08-27 15:21:40,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 63.578947368421055) internal successors, (1208), 19 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 15:21:40,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:40,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:40,859 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 15:21:41,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:41,054 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:41,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash -462079117, now seen corresponding path program 5 times [2023-08-27 15:21:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:41,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223494613] [2023-08-27 15:21:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:41,131 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 15:21:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223494613] [2023-08-27 15:21:41,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223494613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664482239] [2023-08-27 15:21:41,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 15:21:41,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:41,133 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 15:21:41,152 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 15:21:41,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:21:41,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:41,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 15:21:41,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:41,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:41,296 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 15:21:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664482239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:41,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-08-27 15:21:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668914584] [2023-08-27 15:21:41,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 15:21:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 15:21:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 15:21:41,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:41,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 156 transitions, 3067 flow. Second operand has 16 states, 16 states have (on average 63.875) internal successors, (1022), 16 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 15:21:41,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:41,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:41,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:41,761 INFO L124 PetriNetUnfolderBase]: 302/701 cut-off events. [2023-08-27 15:21:41,761 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2023-08-27 15:21:41,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 701 events. 302/701 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4067 event pairs, 11 based on Foata normal form. 14/715 useless extension candidates. Maximal degree in co-relation 5217. Up to 180 conditions per place. [2023-08-27 15:21:41,768 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 101 selfloop transitions, 94 changer transitions 0/195 dead transitions. [2023-08-27 15:21:41,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 195 transitions, 3727 flow [2023-08-27 15:21:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 15:21:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 15:21:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1147 transitions. [2023-08-27 15:21:41,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39000340020401225 [2023-08-27 15:21:41,776 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1147 transitions. [2023-08-27 15:21:41,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1147 transitions. [2023-08-27 15:21:41,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:41,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1147 transitions. [2023-08-27 15:21:41,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.47058823529412) internal successors, (1147), 17 states have internal predecessors, (1147), 0 states have call successors, (0), 0 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 15:21:41,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 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 15:21:41,787 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 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 15:21:41,787 INFO L175 Difference]: Start difference. First operand has 175 places, 156 transitions, 3067 flow. Second operand 17 states and 1147 transitions. [2023-08-27 15:21:41,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 195 transitions, 3727 flow [2023-08-27 15:21:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 195 transitions, 3367 flow, removed 96 selfloop flow, removed 11 redundant places. [2023-08-27 15:21:41,845 INFO L231 Difference]: Finished difference. Result has 179 places, 155 transitions, 2881 flow [2023-08-27 15:21:41,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2881, PETRI_PLACES=179, PETRI_TRANSITIONS=155} [2023-08-27 15:21:41,845 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2023-08-27 15:21:41,846 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 155 transitions, 2881 flow [2023-08-27 15:21:41,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 63.875) internal successors, (1022), 16 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 15:21:41,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:41,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:41,853 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 15:21:42,051 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,SelfDestructingSolverStorable27 [2023-08-27 15:21:42,051 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:42,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1481300573, now seen corresponding path program 1 times [2023-08-27 15:21:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154602851] [2023-08-27 15:21:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:42,345 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 15:21:42,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154602851] [2023-08-27 15:21:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154602851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:42,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:42,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:21:42,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279379901] [2023-08-27 15:21:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:42,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 15:21:42,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 15:21:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 15:21:42,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 15:21:42,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 155 transitions, 2881 flow. Second operand has 8 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 15:21:42,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:42,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 15:21:42,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:42,555 INFO L124 PetriNetUnfolderBase]: 301/705 cut-off events. [2023-08-27 15:21:42,555 INFO L125 PetriNetUnfolderBase]: For 12127/12127 co-relation queries the response was YES. [2023-08-27 15:21:42,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 705 events. 301/705 cut-off events. For 12127/12127 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4107 event pairs, 4 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 5100. Up to 382 conditions per place. [2023-08-27 15:21:42,569 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 116 selfloop transitions, 48 changer transitions 9/173 dead transitions. [2023-08-27 15:21:42,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 173 transitions, 3356 flow [2023-08-27 15:21:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 442 transitions. [2023-08-27 15:21:42,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36498761354252685 [2023-08-27 15:21:42,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 442 transitions. [2023-08-27 15:21:42,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 442 transitions. [2023-08-27 15:21:42,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:42,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 442 transitions. [2023-08-27 15:21:42,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 15:21:42,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:42,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:42,576 INFO L175 Difference]: Start difference. First operand has 179 places, 155 transitions, 2881 flow. Second operand 7 states and 442 transitions. [2023-08-27 15:21:42,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 173 transitions, 3356 flow [2023-08-27 15:21:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 3227 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-27 15:21:42,626 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 2752 flow [2023-08-27 15:21:42,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2752, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2023-08-27 15:21:42,626 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2023-08-27 15:21:42,627 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 2752 flow [2023-08-27 15:21:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 15:21:42,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:42,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:42,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 15:21:42,627 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:42,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1705253575, now seen corresponding path program 2 times [2023-08-27 15:21:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753917631] [2023-08-27 15:21:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:42,741 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 15:21:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:42,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753917631] [2023-08-27 15:21:42,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753917631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:42,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:42,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:42,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168261515] [2023-08-27 15:21:42,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:42,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:21:42,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:21:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:42,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:42,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 2752 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:42,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:42,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:42,941 INFO L124 PetriNetUnfolderBase]: 289/673 cut-off events. [2023-08-27 15:21:42,941 INFO L125 PetriNetUnfolderBase]: For 12256/12256 co-relation queries the response was YES. [2023-08-27 15:21:42,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 673 events. 289/673 cut-off events. For 12256/12256 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3883 event pairs, 26 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5124. Up to 517 conditions per place. [2023-08-27 15:21:42,948 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 114 selfloop transitions, 46 changer transitions 6/166 dead transitions. [2023-08-27 15:21:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 166 transitions, 3208 flow [2023-08-27 15:21:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 479 transitions. [2023-08-27 15:21:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955408753096614 [2023-08-27 15:21:42,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 479 transitions. [2023-08-27 15:21:42,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 479 transitions. [2023-08-27 15:21:42,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:42,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 479 transitions. [2023-08-27 15:21:42,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 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 15:21:42,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:42,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:42,952 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 2752 flow. Second operand 7 states and 479 transitions. [2023-08-27 15:21:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 166 transitions, 3208 flow [2023-08-27 15:21:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 3083 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 15:21:42,998 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 2681 flow [2023-08-27 15:21:42,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2681, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2023-08-27 15:21:42,999 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2023-08-27 15:21:42,999 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 2681 flow [2023-08-27 15:21:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:42,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:42,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 15:21:42,999 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:43,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1735813375, now seen corresponding path program 3 times [2023-08-27 15:21:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451211439] [2023-08-27 15:21:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:43,108 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 15:21:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451211439] [2023-08-27 15:21:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451211439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:43,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:43,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42917404] [2023-08-27 15:21:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:43,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:21:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:21:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:43,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:43,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 2681 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:43,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:43,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:43,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:43,303 INFO L124 PetriNetUnfolderBase]: 285/659 cut-off events. [2023-08-27 15:21:43,303 INFO L125 PetriNetUnfolderBase]: For 11645/11645 co-relation queries the response was YES. [2023-08-27 15:21:43,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5012 conditions, 659 events. 285/659 cut-off events. For 11645/11645 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3720 event pairs, 26 based on Foata normal form. 1/660 useless extension candidates. Maximal degree in co-relation 4968. Up to 512 conditions per place. [2023-08-27 15:21:43,310 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 111 selfloop transitions, 44 changer transitions 7/162 dead transitions. [2023-08-27 15:21:43,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 3122 flow [2023-08-27 15:21:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 15:21:43,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 15:21:43,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 15:21:43,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 15:21:43,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:43,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 15:21:43,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 15:21:43,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:43,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:43,314 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 2681 flow. Second operand 7 states and 476 transitions. [2023-08-27 15:21:43,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 3122 flow [2023-08-27 15:21:43,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 2987 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-27 15:21:43,360 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 2599 flow [2023-08-27 15:21:43,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2599, PETRI_PLACES=167, PETRI_TRANSITIONS=146} [2023-08-27 15:21:43,360 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 139 predicate places. [2023-08-27 15:21:43,360 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 2599 flow [2023-08-27 15:21:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:43,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:43,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:43,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 15:21:43,361 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:43,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:43,362 INFO L85 PathProgramCache]: Analyzing trace with hash -903842691, now seen corresponding path program 4 times [2023-08-27 15:21:43,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:43,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771650411] [2023-08-27 15:21:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:43,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:43,492 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 15:21:43,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771650411] [2023-08-27 15:21:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771650411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:43,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:43,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094795063] [2023-08-27 15:21:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:43,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:21:43,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:21:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:43,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:43,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 146 transitions, 2599 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:43,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:43,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:43,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:43,690 INFO L124 PetriNetUnfolderBase]: 283/648 cut-off events. [2023-08-27 15:21:43,690 INFO L125 PetriNetUnfolderBase]: For 11573/11573 co-relation queries the response was YES. [2023-08-27 15:21:43,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 648 events. 283/648 cut-off events. For 11573/11573 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3633 event pairs, 30 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 4812. Up to 377 conditions per place. [2023-08-27 15:21:43,696 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 86 selfloop transitions, 64 changer transitions 8/158 dead transitions. [2023-08-27 15:21:43,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 3017 flow [2023-08-27 15:21:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 471 transitions. [2023-08-27 15:21:43,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38893476465730803 [2023-08-27 15:21:43,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 471 transitions. [2023-08-27 15:21:43,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 471 transitions. [2023-08-27 15:21:43,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:43,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 471 transitions. [2023-08-27 15:21:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 15:21:43,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:43,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:43,712 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 2599 flow. Second operand 7 states and 471 transitions. [2023-08-27 15:21:43,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 3017 flow [2023-08-27 15:21:43,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 2927 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 15:21:43,756 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 2567 flow [2023-08-27 15:21:43,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2567, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2023-08-27 15:21:43,758 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2023-08-27 15:21:43,758 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 2567 flow [2023-08-27 15:21:43,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:43,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:43,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 15:21:43,759 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:43,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1680511297, now seen corresponding path program 5 times [2023-08-27 15:21:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676633572] [2023-08-27 15:21:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:43,880 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 15:21:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676633572] [2023-08-27 15:21:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676633572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:43,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:43,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293661156] [2023-08-27 15:21:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:21:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:21:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:43,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:43,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 2567 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:43,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:43,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:44,064 INFO L124 PetriNetUnfolderBase]: 279/628 cut-off events. [2023-08-27 15:21:44,064 INFO L125 PetriNetUnfolderBase]: For 11818/11818 co-relation queries the response was YES. [2023-08-27 15:21:44,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 628 events. 279/628 cut-off events. For 11818/11818 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3431 event pairs, 30 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 4746. Up to 472 conditions per place. [2023-08-27 15:21:44,070 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 104 selfloop transitions, 43 changer transitions 7/154 dead transitions. [2023-08-27 15:21:44,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 154 transitions, 2977 flow [2023-08-27 15:21:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-27 15:21:44,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922378199834847 [2023-08-27 15:21:44,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-27 15:21:44,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-27 15:21:44,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:44,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-27 15:21:44,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 15:21:44,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:44,075 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:44,075 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 2567 flow. Second operand 7 states and 475 transitions. [2023-08-27 15:21:44,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 154 transitions, 2977 flow [2023-08-27 15:21:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 2825 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-27 15:21:44,116 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 2441 flow [2023-08-27 15:21:44,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2441, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2023-08-27 15:21:44,117 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2023-08-27 15:21:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 2441 flow [2023-08-27 15:21:44,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:44,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:44,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 15:21:44,118 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:44,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1708216927, now seen corresponding path program 6 times [2023-08-27 15:21:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243545075] [2023-08-27 15:21:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:44,242 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 15:21:44,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243545075] [2023-08-27 15:21:44,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243545075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:21:44,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:21:44,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:21:44,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257352911] [2023-08-27 15:21:44,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:21:44,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:21:44,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:21:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:21:44,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:44,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 2441 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:44,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:44,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:44,427 INFO L124 PetriNetUnfolderBase]: 276/611 cut-off events. [2023-08-27 15:21:44,428 INFO L125 PetriNetUnfolderBase]: For 11350/11350 co-relation queries the response was YES. [2023-08-27 15:21:44,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 611 events. 276/611 cut-off events. For 11350/11350 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3266 event pairs, 26 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 4562. Up to 447 conditions per place. [2023-08-27 15:21:44,433 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 102 selfloop transitions, 40 changer transitions 11/153 dead transitions. [2023-08-27 15:21:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 2854 flow [2023-08-27 15:21:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:21:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:21:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 15:21:44,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 15:21:44,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 15:21:44,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 15:21:44,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:44,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 15:21:44,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 15:21:44,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:44,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 15:21:44,438 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 2441 flow. Second operand 7 states and 476 transitions. [2023-08-27 15:21:44,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 2854 flow [2023-08-27 15:21:44,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 153 transitions, 2711 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 15:21:44,477 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 2304 flow [2023-08-27 15:21:44,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2304, PETRI_PLACES=159, PETRI_TRANSITIONS=135} [2023-08-27 15:21:44,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2023-08-27 15:21:44,478 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 2304 flow [2023-08-27 15:21:44,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 15:21:44,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:44,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:44,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 15:21:44,478 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:44,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1021697265, now seen corresponding path program 1 times [2023-08-27 15:21:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580444682] [2023-08-27 15:21:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:44,597 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 15:21:44,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:44,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580444682] [2023-08-27 15:21:44,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580444682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:44,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603131860] [2023-08-27 15:21:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:44,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:44,599 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 15:21:44,627 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 15:21:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:44,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:44,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:44,771 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 15:21:44,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:45,015 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 15:21:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603131860] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:45,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:45,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 15:21:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658627456] [2023-08-27 15:21:45,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:45,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 15:21:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 15:21:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 15:21:45,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:45,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 135 transitions, 2304 flow. Second operand has 18 states, 18 states have (on average 63.833333333333336) internal successors, (1149), 18 states have internal predecessors, (1149), 0 states have call successors, (0), 0 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 15:21:45,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:45,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:45,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:45,479 INFO L124 PetriNetUnfolderBase]: 268/584 cut-off events. [2023-08-27 15:21:45,480 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2023-08-27 15:21:45,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 584 events. 268/584 cut-off events. For 10412/10412 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3026 event pairs, 2 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 4367. Up to 186 conditions per place. [2023-08-27 15:21:45,487 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 67 selfloop transitions, 64 changer transitions 33/164 dead transitions. [2023-08-27 15:21:45,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 164 transitions, 2856 flow [2023-08-27 15:21:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 15:21:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 15:21:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 741 transitions. [2023-08-27 15:21:45,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3893851812926957 [2023-08-27 15:21:45,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 741 transitions. [2023-08-27 15:21:45,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 741 transitions. [2023-08-27 15:21:45,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:45,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 741 transitions. [2023-08-27 15:21:45,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.36363636363636) internal successors, (741), 11 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 15:21:45,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:45,492 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:45,492 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 2304 flow. Second operand 11 states and 741 transitions. [2023-08-27 15:21:45,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 164 transitions, 2856 flow [2023-08-27 15:21:45,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 164 transitions, 2686 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-08-27 15:21:45,527 INFO L231 Difference]: Finished difference. Result has 153 places, 115 transitions, 1879 flow [2023-08-27 15:21:45,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=153, PETRI_TRANSITIONS=115} [2023-08-27 15:21:45,528 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2023-08-27 15:21:45,528 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 1879 flow [2023-08-27 15:21:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.833333333333336) internal successors, (1149), 18 states have internal predecessors, (1149), 0 states have call successors, (0), 0 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 15:21:45,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:45,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:45,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 15:21:45,733 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,SelfDestructingSolverStorable34 [2023-08-27 15:21:45,734 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:45,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1365180121, now seen corresponding path program 2 times [2023-08-27 15:21:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661263338] [2023-08-27 15:21:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:45,892 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 15:21:45,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:45,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661263338] [2023-08-27 15:21:45,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661263338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:45,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031777306] [2023-08-27 15:21:45,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:21:45,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:45,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:45,894 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 15:21:45,921 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 15:21:45,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:21:45,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:45,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:45,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:46,071 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 15:21:46,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:46,274 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 15:21:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031777306] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:46,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 15:21:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002399896] [2023-08-27 15:21:46,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 15:21:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 15:21:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-08-27 15:21:46,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 15:21:46,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 115 transitions, 1879 flow. Second operand has 19 states, 19 states have (on average 58.8421052631579) internal successors, (1118), 19 states have internal predecessors, (1118), 0 states have call successors, (0), 0 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 15:21:46,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:46,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 15:21:46,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:46,621 INFO L124 PetriNetUnfolderBase]: 201/473 cut-off events. [2023-08-27 15:21:46,621 INFO L125 PetriNetUnfolderBase]: For 7508/7508 co-relation queries the response was YES. [2023-08-27 15:21:46,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 473 events. 201/473 cut-off events. For 7508/7508 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2481 event pairs, 2 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 3371. Up to 135 conditions per place. [2023-08-27 15:21:46,625 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 68 selfloop transitions, 61 changer transitions 15/144 dead transitions. [2023-08-27 15:21:46,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 144 transitions, 2388 flow [2023-08-27 15:21:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 15:21:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 15:21:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 685 transitions. [2023-08-27 15:21:46,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3599579611140305 [2023-08-27 15:21:46,627 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 685 transitions. [2023-08-27 15:21:46,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 685 transitions. [2023-08-27 15:21:46,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:46,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 685 transitions. [2023-08-27 15:21:46,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.27272727272727) internal successors, (685), 11 states have internal predecessors, (685), 0 states have call successors, (0), 0 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 15:21:46,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:46,631 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:46,631 INFO L175 Difference]: Start difference. First operand has 153 places, 115 transitions, 1879 flow. Second operand 11 states and 685 transitions. [2023-08-27 15:21:46,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 144 transitions, 2388 flow [2023-08-27 15:21:46,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 144 transitions, 2150 flow, removed 16 selfloop flow, removed 17 redundant places. [2023-08-27 15:21:46,655 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 1612 flow [2023-08-27 15:21:46,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2023-08-27 15:21:46,655 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2023-08-27 15:21:46,656 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 1612 flow [2023-08-27 15:21:46,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 58.8421052631579) internal successors, (1118), 19 states have internal predecessors, (1118), 0 states have call successors, (0), 0 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 15:21:46,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:46,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:46,661 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 15:21:46,861 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,SelfDestructingSolverStorable35 [2023-08-27 15:21:46,861 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:46,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1334620321, now seen corresponding path program 3 times [2023-08-27 15:21:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945246967] [2023-08-27 15:21:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:47,013 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 15:21:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945246967] [2023-08-27 15:21:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945246967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809467945] [2023-08-27 15:21:47,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:21:47,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:47,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:47,015 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 15:21:47,018 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 15:21:47,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 15:21:47,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:47,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:47,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:47,186 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 15:21:47,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:47,399 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 15:21:47,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809467945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:47,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 15:21:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799241814] [2023-08-27 15:21:47,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 15:21:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:47,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 15:21:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-08-27 15:21:47,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 15:21:47,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 1612 flow. Second operand has 19 states, 19 states have (on average 58.63157894736842) internal successors, (1114), 19 states have internal predecessors, (1114), 0 states have call successors, (0), 0 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 15:21:47,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:47,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 15:21:47,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:47,712 INFO L124 PetriNetUnfolderBase]: 177/397 cut-off events. [2023-08-27 15:21:47,713 INFO L125 PetriNetUnfolderBase]: For 4705/4705 co-relation queries the response was YES. [2023-08-27 15:21:47,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 397 events. 177/397 cut-off events. For 4705/4705 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1862 event pairs, 2 based on Foata normal form. 7/404 useless extension candidates. Maximal degree in co-relation 2817. Up to 84 conditions per place. [2023-08-27 15:21:47,715 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 41 selfloop transitions, 32 changer transitions 59/132 dead transitions. [2023-08-27 15:21:47,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 2073 flow [2023-08-27 15:21:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 15:21:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 15:21:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 679 transitions. [2023-08-27 15:21:47,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35680504466631635 [2023-08-27 15:21:47,717 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 679 transitions. [2023-08-27 15:21:47,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 679 transitions. [2023-08-27 15:21:47,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:47,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 679 transitions. [2023-08-27 15:21:47,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.72727272727273) internal successors, (679), 11 states have internal predecessors, (679), 0 states have call successors, (0), 0 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 15:21:47,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:47,721 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:47,721 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 1612 flow. Second operand 11 states and 679 transitions. [2023-08-27 15:21:47,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 2073 flow [2023-08-27 15:21:47,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1877 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-08-27 15:21:47,737 INFO L231 Difference]: Finished difference. Result has 130 places, 62 transitions, 824 flow [2023-08-27 15:21:47,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=824, PETRI_PLACES=130, PETRI_TRANSITIONS=62} [2023-08-27 15:21:47,738 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2023-08-27 15:21:47,739 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 62 transitions, 824 flow [2023-08-27 15:21:47,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 58.63157894736842) internal successors, (1114), 19 states have internal predecessors, (1114), 0 states have call successors, (0), 0 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 15:21:47,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:47,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:47,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 15:21:47,944 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,SelfDestructingSolverStorable36 [2023-08-27 15:21:47,944 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:47,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 106573405, now seen corresponding path program 4 times [2023-08-27 15:21:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124357868] [2023-08-27 15:21:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:48,073 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 15:21:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124357868] [2023-08-27 15:21:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124357868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115695350] [2023-08-27 15:21:48,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 15:21:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:48,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:48,075 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 15:21:48,077 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 15:21:48,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 15:21:48,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:48,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:48,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:48,201 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 15:21:48,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:48,399 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 15:21:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115695350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:48,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 15:21:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160758571] [2023-08-27 15:21:48,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:48,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 15:21:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 15:21:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-27 15:21:48,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:48,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 62 transitions, 824 flow. Second operand has 15 states, 15 states have (on average 63.53333333333333) internal successors, (953), 15 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 15:21:48,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:48,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:48,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:48,859 INFO L124 PetriNetUnfolderBase]: 89/234 cut-off events. [2023-08-27 15:21:48,859 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-08-27 15:21:48,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 234 events. 89/234 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1021 event pairs, 1 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 1470. Up to 66 conditions per place. [2023-08-27 15:21:48,861 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 36 changer transitions 14/86 dead transitions. [2023-08-27 15:21:48,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 86 transitions, 1140 flow [2023-08-27 15:21:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 15:21:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 15:21:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 992 transitions. [2023-08-27 15:21:48,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38227360308285163 [2023-08-27 15:21:48,863 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 992 transitions. [2023-08-27 15:21:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 992 transitions. [2023-08-27 15:21:48,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:48,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 992 transitions. [2023-08-27 15:21:48,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.13333333333334) internal successors, (992), 15 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 15:21:48,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 15:21:48,869 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 15:21:48,869 INFO L175 Difference]: Start difference. First operand has 130 places, 62 transitions, 824 flow. Second operand 15 states and 992 transitions. [2023-08-27 15:21:48,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 86 transitions, 1140 flow [2023-08-27 15:21:48,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 86 transitions, 967 flow, removed 24 selfloop flow, removed 18 redundant places. [2023-08-27 15:21:48,877 INFO L231 Difference]: Finished difference. Result has 105 places, 55 transitions, 647 flow [2023-08-27 15:21:48,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=647, PETRI_PLACES=105, PETRI_TRANSITIONS=55} [2023-08-27 15:21:48,877 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2023-08-27 15:21:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 55 transitions, 647 flow [2023-08-27 15:21:48,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.53333333333333) internal successors, (953), 15 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 15:21:48,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:48,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:48,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 15:21:49,083 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,SelfDestructingSolverStorable37 [2023-08-27 15:21:49,083 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:49,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 935482781, now seen corresponding path program 5 times [2023-08-27 15:21:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497636346] [2023-08-27 15:21:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:49,207 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 15:21:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497636346] [2023-08-27 15:21:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497636346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494387184] [2023-08-27 15:21:49,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 15:21:49,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:49,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:49,209 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 15:21:49,219 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 15:21:49,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 15:21:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:49,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 15:21:49,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:21:49,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:49,456 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 15:21:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494387184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:49,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-08-27 15:21:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720306946] [2023-08-27 15:21:49,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:49,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 15:21:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 15:21:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-27 15:21:49,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:49,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 55 transitions, 647 flow. Second operand has 15 states, 15 states have (on average 63.93333333333333) internal successors, (959), 15 states have internal predecessors, (959), 0 states have call successors, (0), 0 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 15:21:49,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:49,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:49,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:49,737 INFO L124 PetriNetUnfolderBase]: 82/205 cut-off events. [2023-08-27 15:21:49,737 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2023-08-27 15:21:49,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 205 events. 82/205 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 812 event pairs, 1 based on Foata normal form. 8/213 useless extension candidates. Maximal degree in co-relation 1240. Up to 72 conditions per place. [2023-08-27 15:21:49,738 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 28 changer transitions 17/81 dead transitions. [2023-08-27 15:21:49,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 954 flow [2023-08-27 15:21:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 15:21:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 15:21:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 927 transitions. [2023-08-27 15:21:49,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827415359207267 [2023-08-27 15:21:49,740 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 927 transitions. [2023-08-27 15:21:49,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 927 transitions. [2023-08-27 15:21:49,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:49,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 927 transitions. [2023-08-27 15:21:49,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 15:21:49,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 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 15:21:49,744 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 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 15:21:49,744 INFO L175 Difference]: Start difference. First operand has 105 places, 55 transitions, 647 flow. Second operand 14 states and 927 transitions. [2023-08-27 15:21:49,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 954 flow [2023-08-27 15:21:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 81 transitions, 909 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 15:21:49,750 INFO L231 Difference]: Finished difference. Result has 106 places, 51 transitions, 601 flow [2023-08-27 15:21:49,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=601, PETRI_PLACES=106, PETRI_TRANSITIONS=51} [2023-08-27 15:21:49,751 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-27 15:21:49,751 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 51 transitions, 601 flow [2023-08-27 15:21:49,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.93333333333333) internal successors, (959), 15 states have internal predecessors, (959), 0 states have call successors, (0), 0 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 15:21:49,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:49,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:49,760 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 15:21:49,956 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,SelfDestructingSolverStorable38 [2023-08-27 15:21:49,957 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:49,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 966042581, now seen corresponding path program 6 times [2023-08-27 15:21:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:49,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033634597] [2023-08-27 15:21:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:50,064 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 15:21:50,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:50,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033634597] [2023-08-27 15:21:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033634597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:50,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920689761] [2023-08-27 15:21:50,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 15:21:50,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:50,066 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 15:21:50,069 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 15:21:50,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 15:21:50,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:50,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:50,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:50,203 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 15:21:50,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:50,407 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 15:21:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920689761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:50,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:50,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-27 15:21:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373771983] [2023-08-27 15:21:50,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 15:21:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 15:21:50,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-27 15:21:50,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:50,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 51 transitions, 601 flow. Second operand has 16 states, 16 states have (on average 63.5) internal successors, (1016), 16 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 15:21:50,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:50,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:50,812 INFO L124 PetriNetUnfolderBase]: 67/170 cut-off events. [2023-08-27 15:21:50,812 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2023-08-27 15:21:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 170 events. 67/170 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 605 event pairs, 1 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 1033. Up to 55 conditions per place. [2023-08-27 15:21:50,813 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 26 changer transitions 10/70 dead transitions. [2023-08-27 15:21:50,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 818 flow [2023-08-27 15:21:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 15:21:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 15:21:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 920 transitions. [2023-08-27 15:21:50,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37985136251032203 [2023-08-27 15:21:50,814 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 920 transitions. [2023-08-27 15:21:50,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 920 transitions. [2023-08-27 15:21:50,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:50,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 920 transitions. [2023-08-27 15:21:50,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 65.71428571428571) internal successors, (920), 14 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 15:21:50,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 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 15:21:50,818 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 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 15:21:50,818 INFO L175 Difference]: Start difference. First operand has 106 places, 51 transitions, 601 flow. Second operand 14 states and 920 transitions. [2023-08-27 15:21:50,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 818 flow [2023-08-27 15:21:50,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 70 transitions, 704 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-27 15:21:50,823 INFO L231 Difference]: Finished difference. Result has 100 places, 47 transitions, 491 flow [2023-08-27 15:21:50,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=491, PETRI_PLACES=100, PETRI_TRANSITIONS=47} [2023-08-27 15:21:50,824 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2023-08-27 15:21:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 47 transitions, 491 flow [2023-08-27 15:21:50,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 63.5) internal successors, (1016), 16 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 15:21:50,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:50,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:50,835 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 15:21:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:51,029 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:51,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1539484513, now seen corresponding path program 7 times [2023-08-27 15:21:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353317114] [2023-08-27 15:21:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:51,164 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 15:21:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353317114] [2023-08-27 15:21:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353317114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213620738] [2023-08-27 15:21:51,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 15:21:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:51,169 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 15:21:51,195 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 15:21:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:51,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:51,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:51,331 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 15:21:51,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:51,519 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 15:21:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213620738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:51,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 15:21:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241874627] [2023-08-27 15:21:51,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 15:21:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 15:21:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-27 15:21:51,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:51,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 47 transitions, 491 flow. Second operand has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:21:51,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:51,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:51,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:51,773 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-27 15:21:51,773 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-27 15:21:51,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 172 events. 72/172 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 595 event pairs, 3 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 1021. Up to 37 conditions per place. [2023-08-27 15:21:51,775 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 23 selfloop transitions, 12 changer transitions 33/68 dead transitions. [2023-08-27 15:21:51,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 68 transitions, 786 flow [2023-08-27 15:21:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 15:21:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 15:21:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2023-08-27 15:21:51,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992643194955333 [2023-08-27 15:21:51,778 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 723 transitions. [2023-08-27 15:21:51,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 723 transitions. [2023-08-27 15:21:51,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:51,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 723 transitions. [2023-08-27 15:21:51,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.72727272727273) internal successors, (723), 11 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 15:21:51,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:51,781 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 15:21:51,781 INFO L175 Difference]: Start difference. First operand has 100 places, 47 transitions, 491 flow. Second operand 11 states and 723 transitions. [2023-08-27 15:21:51,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 68 transitions, 786 flow [2023-08-27 15:21:51,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 68 transitions, 680 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-08-27 15:21:51,785 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 275 flow [2023-08-27 15:21:51,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=275, PETRI_PLACES=90, PETRI_TRANSITIONS=31} [2023-08-27 15:21:51,785 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2023-08-27 15:21:51,786 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 275 flow [2023-08-27 15:21:51,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:21:51,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:21:51,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:51,794 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 15:21:51,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:51,987 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:21:51,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:21:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash -909548693, now seen corresponding path program 8 times [2023-08-27 15:21:51,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:21:51,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983805353] [2023-08-27 15:21:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:21:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:21:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:21:52,095 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 15:21:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:21:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983805353] [2023-08-27 15:21:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983805353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:21:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951395990] [2023-08-27 15:21:52,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:21:52,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:52,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:52,097 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 15:21:52,121 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 15:21:52,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:21:52,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:21:52,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:21:52,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:21:52,268 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 15:21:52,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:21:52,457 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 15:21:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951395990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:21:52,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:21:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 15:21:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457908947] [2023-08-27 15:21:52,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:21:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 15:21:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:21:52,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 15:21:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 15:21:52,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 15:21:52,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 31 transitions, 275 flow. Second operand has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:21:52,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:21:52,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 15:21:52,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:21:52,696 INFO L124 PetriNetUnfolderBase]: 34/90 cut-off events. [2023-08-27 15:21:52,696 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2023-08-27 15:21:52,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 90 events. 34/90 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 223 event pairs, 3 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 474. Up to 21 conditions per place. [2023-08-27 15:21:52,697 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-27 15:21:52,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 36 transitions, 355 flow [2023-08-27 15:21:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 15:21:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 15:21:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 584 transitions. [2023-08-27 15:21:52,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37508028259473347 [2023-08-27 15:21:52,698 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 584 transitions. [2023-08-27 15:21:52,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 584 transitions. [2023-08-27 15:21:52,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:21:52,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 584 transitions. [2023-08-27 15:21:52,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 0 states have call successors, (0), 0 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 15:21:52,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 15:21:52,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 15:21:52,701 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 275 flow. Second operand 9 states and 584 transitions. [2023-08-27 15:21:52,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 36 transitions, 355 flow [2023-08-27 15:21:52,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 36 transitions, 299 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-27 15:21:52,703 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-08-27 15:21:52,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2023-08-27 15:21:52,703 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 44 predicate places. [2023-08-27 15:21:52,703 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-08-27 15:21:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 15:21:52,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 15:21:52,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 15:21:52,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 15:21:52,721 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 15:21:52,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:21:52,913 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:21:52,918 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 15:21:52,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 15:21:52,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:21:52 BasicIcfg [2023-08-27 15:21:52,922 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 15:21:52,923 INFO L158 Benchmark]: Toolchain (without parser) took 24559.60ms. Allocated memory was 408.9MB in the beginning and 622.9MB in the end (delta: 213.9MB). Free memory was 385.3MB in the beginning and 325.8MB in the end (delta: 59.5MB). Peak memory consumption was 274.6MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,923 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 408.9MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:21:52,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.50ms. Allocated memory is still 408.9MB. Free memory was 384.7MB in the beginning and 374.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.22ms. Allocated memory is still 408.9MB. Free memory was 374.4MB in the beginning and 372.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,924 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 408.9MB. Free memory was 372.8MB in the beginning and 371.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,924 INFO L158 Benchmark]: RCFGBuilder took 445.25ms. Allocated memory is still 408.9MB. Free memory was 371.2MB in the beginning and 357.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,924 INFO L158 Benchmark]: TraceAbstraction took 23800.64ms. Allocated memory was 408.9MB in the beginning and 622.9MB in the end (delta: 213.9MB). Free memory was 356.6MB in the beginning and 325.8MB in the end (delta: 30.8MB). Peak memory consumption was 245.2MB. Max. memory is 16.0GB. [2023-08-27 15:21:52,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 408.9MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 246.50ms. Allocated memory is still 408.9MB. Free memory was 384.7MB in the beginning and 374.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.22ms. Allocated memory is still 408.9MB. Free memory was 374.4MB in the beginning and 372.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 408.9MB. Free memory was 372.8MB in the beginning and 371.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 445.25ms. Allocated memory is still 408.9MB. Free memory was 371.2MB in the beginning and 357.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 23800.64ms. Allocated memory was 408.9MB in the beginning and 622.9MB in the end (delta: 213.9MB). Free memory was 356.6MB in the beginning and 325.8MB in the end (delta: 30.8MB). Peak memory consumption was 245.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 84 PlacesBefore, 28 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 4 ChoiceCompositions, 79 TotalNumberOfCompositions, 1106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1035, independent: 1024, independent conditional: 0, independent unconditional: 1024, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 529, independent: 525, independent conditional: 0, independent unconditional: 525, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1035, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 529, unknown conditional: 0, unknown unconditional: 529] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 19 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: 23.6s, OverallIterations: 42, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1611 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1611 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7489 IncrementalHoareTripleChecker+Invalid, 7836 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 0 mSDtfsCounter, 7489 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 251 SyntacticMatches, 26 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3067occurred in iteration=27, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 4738 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1808 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 74 InterpolantComputations, 28 PerfectInterpolantSequences, 28/110 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 15:21:52,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...