/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:09:30,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:09:30,323 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 02:09:30,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:09:30,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:09:30,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:09:30,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:09:30,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:09:30,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:09:30,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:09:30,360 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:09:30,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:09:30,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:09:30,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:09:30,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:09:30,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:09:30,363 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:09:30,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:09:30,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:09:30,363 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:09:30,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:09:30,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:09:30,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:09:30,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:09:30,365 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:09:30,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:09:30,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:09:30,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:09:30,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:09:30,610 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:09:30,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 02:09:31,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:09:31,735 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:09:31,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 02:09:31,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8744ce6bf/4e63060024a344b194afbfe4e623f350/FLAG120589d97 [2023-08-27 02:09:31,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8744ce6bf/4e63060024a344b194afbfe4e623f350 [2023-08-27 02:09:31,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:09:31,752 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:09:31,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:09:31,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:09:31,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:09:31,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26117a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31, skipping insertion in model container [2023-08-27 02:09:31,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,768 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:09:31,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:09:31,873 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:09:31,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:09:31,888 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:09:31,888 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:09:31,893 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:09:31,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31 WrapperNode [2023-08-27 02:09:31,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:09:31,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:09:31,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:09:31,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:09:31,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,918 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2023-08-27 02:09:31,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:09:31,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:09:31,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:09:31,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:09:31,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:09:31,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:09:31,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:09:31,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:09:31,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (1/1) ... [2023-08-27 02:09:31,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:09:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:31,986 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 02:09:32,004 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 02:09:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:09:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:09:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:09:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:09:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:09:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:09:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:09:32,015 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 02:09:32,093 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:09:32,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:09:32,263 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:09:32,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:09:32,278 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:09:32,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:32 BoogieIcfgContainer [2023-08-27 02:09:32,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:09:32,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:09:32,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:09:32,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:09:32,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:09:31" (1/3) ... [2023-08-27 02:09:32,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb4966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:09:32, skipping insertion in model container [2023-08-27 02:09:32,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:31" (2/3) ... [2023-08-27 02:09:32,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb4966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:09:32, skipping insertion in model container [2023-08-27 02:09:32,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:32" (3/3) ... [2023-08-27 02:09:32,285 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-27 02:09:32,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:09:32,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:09:32,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:09:32,380 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:09:32,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 02:09:32,462 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2023-08-27 02:09:32,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:09:32,468 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 02:09:32,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 02:09:32,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 178 flow [2023-08-27 02:09:32,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:09:32,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 02:09:32,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 02:09:32,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-27 02:09:32,516 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-08-27 02:09:32,516 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:09:32,517 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 02:09:32,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-08-27 02:09:34,349 INFO L134 LiptonReduction]: Checked pairs total: 1106 [2023-08-27 02:09:34,349 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-27 02:09:34,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:09:34,362 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;@50717365, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:09:34,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:09:34,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:09:34,364 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 02:09:34,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:09:34,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:34,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:09:34,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:34,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 11338661, now seen corresponding path program 1 times [2023-08-27 02:09:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:34,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108328952] [2023-08-27 02:09:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:34,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:34,497 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 02:09:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108328952] [2023-08-27 02:09:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108328952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:34,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:09:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411635965] [2023-08-27 02:09:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:34,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:09:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:09:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:09:34,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 02:09:34,527 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 02:09:34,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:34,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 02:09:34,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:34,596 INFO L124 PetriNetUnfolderBase]: 100/179 cut-off events. [2023-08-27 02:09:34,596 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 02:09:34,597 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 02:09:34,598 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 02:09:34,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2023-08-27 02:09:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:09:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:09:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-27 02:09:34,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221579961464354 [2023-08-27 02:09:34,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-27 02:09:34,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-27 02:09:34,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:34,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-27 02:09:34,611 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 02:09:34,614 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 02:09:34,614 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 02:09:34,615 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 3 states and 271 transitions. [2023-08-27 02:09:34,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2023-08-27 02:09:34,617 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 02:09:34,618 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 67 flow [2023-08-27 02:09:34,619 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 02:09:34,621 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-27 02:09:34,622 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 67 flow [2023-08-27 02:09:34,622 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 02:09:34,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:34,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:09:34,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:09:34,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:34,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash 11338662, now seen corresponding path program 1 times [2023-08-27 02:09:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629667549] [2023-08-27 02:09:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:34,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:34,735 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 02:09:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629667549] [2023-08-27 02:09:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629667549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:09:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602693490] [2023-08-27 02:09:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:09:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:09:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:09:34,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 02:09:34,741 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 02:09:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 02:09:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:34,817 INFO L124 PetriNetUnfolderBase]: 84/153 cut-off events. [2023-08-27 02:09:34,817 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 02:09:34,819 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 02:09:34,821 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-08-27 02:09:34,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 190 flow [2023-08-27 02:09:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:09:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:09:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-27 02:09:34,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479768786127168 [2023-08-27 02:09:34,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-27 02:09:34,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-27 02:09:34,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:34,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-27 02:09:34,828 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 02:09:34,831 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 02:09:34,831 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 02:09:34,831 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 67 flow. Second operand 4 states and 310 transitions. [2023-08-27 02:09:34,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 190 flow [2023-08-27 02:09:34,832 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 02:09:34,833 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2023-08-27 02:09:34,833 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 02:09:34,833 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 02:09:34,834 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2023-08-27 02:09:34,834 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 02:09:34,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:34,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:09:34,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:09:34,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:34,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash 11338656, now seen corresponding path program 1 times [2023-08-27 02:09:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795374709] [2023-08-27 02:09:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:34,891 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 02:09:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795374709] [2023-08-27 02:09:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795374709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:09:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774618556] [2023-08-27 02:09:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:09:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:09:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:09:34,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 02:09:34,894 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 02:09:34,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 02:09:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:34,947 INFO L124 PetriNetUnfolderBase]: 67/124 cut-off events. [2023-08-27 02:09:34,947 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 02:09:34,948 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 02:09:34,950 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-27 02:09:34,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 165 flow [2023-08-27 02:09:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:09:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:09:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-27 02:09:34,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44653179190751446 [2023-08-27 02:09:34,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-27 02:09:34,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-27 02:09:34,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:34,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-27 02:09:34,952 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 02:09:34,953 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 02:09:34,954 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 02:09:34,954 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 309 transitions. [2023-08-27 02:09:34,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 165 flow [2023-08-27 02:09:34,961 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 02:09:34,962 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 86 flow [2023-08-27 02:09:34,962 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 02:09:34,963 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 02:09:34,963 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 86 flow [2023-08-27 02:09:34,963 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 02:09:34,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:34,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:09:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:09:34,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:34,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797394, now seen corresponding path program 1 times [2023-08-27 02:09:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:34,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598995916] [2023-08-27 02:09:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,029 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 02:09:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598995916] [2023-08-27 02:09:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598995916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:09:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77003905] [2023-08-27 02:09:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:09:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:09:35,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:09:35,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 02:09:35,032 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 02:09:35,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 02:09:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,074 INFO L124 PetriNetUnfolderBase]: 56/105 cut-off events. [2023-08-27 02:09:35,074 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 02:09:35,074 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 02:09:35,075 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-27 02:09:35,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 164 flow [2023-08-27 02:09:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:09:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:09:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-27 02:09:35,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421965317919075 [2023-08-27 02:09:35,076 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-27 02:09:35,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-27 02:09:35,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-27 02:09:35,077 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 02:09:35,078 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 02:09:35,078 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 02:09:35,079 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 86 flow. Second operand 4 states and 306 transitions. [2023-08-27 02:09:35,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 164 flow [2023-08-27 02:09:35,079 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 02:09:35,080 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 84 flow [2023-08-27 02:09:35,080 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 02:09:35,080 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 02:09:35,080 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 84 flow [2023-08-27 02:09:35,081 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 02:09:35,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:09:35,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797383, now seen corresponding path program 1 times [2023-08-27 02:09:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057452966] [2023-08-27 02:09:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,155 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 02:09:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057452966] [2023-08-27 02:09:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057452966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:09:35,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969020792] [2023-08-27 02:09:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:09:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:09:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:09:35,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 02:09:35,159 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 02:09:35,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 02:09:35,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,207 INFO L124 PetriNetUnfolderBase]: 48/93 cut-off events. [2023-08-27 02:09:35,208 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 02:09:35,212 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 02:09:35,212 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-27 02:09:35,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 181 flow [2023-08-27 02:09:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:09:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:09:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-08-27 02:09:35,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434971098265896 [2023-08-27 02:09:35,213 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-08-27 02:09:35,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-08-27 02:09:35,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-08-27 02:09:35,215 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 02:09:35,216 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 02:09:35,216 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 02:09:35,216 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 84 flow. Second operand 4 states and 301 transitions. [2023-08-27 02:09:35,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 181 flow [2023-08-27 02:09:35,217 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 02:09:35,217 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 112 flow [2023-08-27 02:09:35,217 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 02:09:35,219 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-27 02:09:35,219 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 112 flow [2023-08-27 02:09:35,219 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 02:09:35,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:09:35,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 371192656, now seen corresponding path program 1 times [2023-08-27 02:09:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983305652] [2023-08-27 02:09:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,311 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 02:09:35,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983305652] [2023-08-27 02:09:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983305652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:35,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688529539] [2023-08-27 02:09:35,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:35,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:35,318 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 02:09:35,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:35,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,402 INFO L124 PetriNetUnfolderBase]: 59/108 cut-off events. [2023-08-27 02:09:35,402 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 02:09:35,403 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 02:09:35,403 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-27 02:09:35,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 272 flow [2023-08-27 02:09:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 545 transitions. [2023-08-27 02:09:35,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39378612716763006 [2023-08-27 02:09:35,406 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 545 transitions. [2023-08-27 02:09:35,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 545 transitions. [2023-08-27 02:09:35,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 545 transitions. [2023-08-27 02:09:35,407 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 02:09:35,408 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 02:09:35,409 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 02:09:35,409 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 112 flow. Second operand 8 states and 545 transitions. [2023-08-27 02:09:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 272 flow [2023-08-27 02:09:35,412 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 02:09:35,413 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 175 flow [2023-08-27 02:09:35,413 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 02:09:35,414 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-08-27 02:09:35,414 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 175 flow [2023-08-27 02:09:35,415 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 02:09:35,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:09:35,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687735, now seen corresponding path program 1 times [2023-08-27 02:09:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716366334] [2023-08-27 02:09:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,458 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 02:09:35,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716366334] [2023-08-27 02:09:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716366334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:09:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452465059] [2023-08-27 02:09:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:09:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:09:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:09:35,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 02:09:35,461 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 02:09:35,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 02:09:35,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,492 INFO L124 PetriNetUnfolderBase]: 51/94 cut-off events. [2023-08-27 02:09:35,492 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 02:09:35,493 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 02:09:35,493 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-27 02:09:35,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 234 flow [2023-08-27 02:09:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:09:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:09:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-08-27 02:09:35,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48554913294797686 [2023-08-27 02:09:35,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-08-27 02:09:35,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-08-27 02:09:35,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-08-27 02:09:35,495 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 02:09:35,496 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 02:09:35,496 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 02:09:35,496 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 175 flow. Second operand 4 states and 336 transitions. [2023-08-27 02:09:35,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 234 flow [2023-08-27 02:09:35,497 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 02:09:35,497 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 127 flow [2023-08-27 02:09:35,498 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 02:09:35,498 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-27 02:09:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 127 flow [2023-08-27 02:09:35,498 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 02:09:35,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:09:35,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 371147987, now seen corresponding path program 1 times [2023-08-27 02:09:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863759285] [2023-08-27 02:09:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,568 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 02:09:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863759285] [2023-08-27 02:09:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863759285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98033768] [2023-08-27 02:09:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:35,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:35,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:35,571 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 02:09:35,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:35,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,639 INFO L124 PetriNetUnfolderBase]: 61/108 cut-off events. [2023-08-27 02:09:35,640 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-27 02:09:35,640 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 02:09:35,640 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 30 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2023-08-27 02:09:35,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 272 flow [2023-08-27 02:09:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 02:09:35,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 02:09:35,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 02:09:35,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 02:09:35,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 02:09:35,643 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 02:09:35,644 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 02:09:35,644 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 02:09:35,644 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 127 flow. Second operand 6 states and 413 transitions. [2023-08-27 02:09:35,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 272 flow [2023-08-27 02:09:35,645 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 02:09:35,645 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 194 flow [2023-08-27 02:09:35,645 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 02:09:35,646 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2023-08-27 02:09:35,646 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 194 flow [2023-08-27 02:09:35,646 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 02:09:35,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 02:09:35,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687736, now seen corresponding path program 2 times [2023-08-27 02:09:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369694340] [2023-08-27 02:09:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,724 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 02:09:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369694340] [2023-08-27 02:09:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369694340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561139536] [2023-08-27 02:09:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:35,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:35,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:35,726 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 02:09:35,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:35,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,811 INFO L124 PetriNetUnfolderBase]: 68/119 cut-off events. [2023-08-27 02:09:35,811 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 02:09:35,812 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 02:09:35,812 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2023-08-27 02:09:35,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 356 flow [2023-08-27 02:09:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 544 transitions. [2023-08-27 02:09:35,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 02:09:35,814 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 544 transitions. [2023-08-27 02:09:35,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 544 transitions. [2023-08-27 02:09:35,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 544 transitions. [2023-08-27 02:09:35,815 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 02:09:35,816 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 02:09:35,816 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 02:09:35,816 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 194 flow. Second operand 8 states and 544 transitions. [2023-08-27 02:09:35,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 356 flow [2023-08-27 02:09:35,817 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 02:09:35,818 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 220 flow [2023-08-27 02:09:35,818 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 02:09:35,818 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-27 02:09:35,819 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 220 flow [2023-08-27 02:09:35,819 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 02:09:35,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:09:35,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1948177817, now seen corresponding path program 2 times [2023-08-27 02:09:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121011352] [2023-08-27 02:09:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:35,878 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 02:09:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121011352] [2023-08-27 02:09:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121011352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:35,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627821457] [2023-08-27 02:09:35,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:35,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:35,881 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 02:09:35,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:35,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:35,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:35,954 INFO L124 PetriNetUnfolderBase]: 71/124 cut-off events. [2023-08-27 02:09:35,954 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-27 02:09:35,955 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 02:09:35,955 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 35 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2023-08-27 02:09:35,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 384 flow [2023-08-27 02:09:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 538 transitions. [2023-08-27 02:09:35,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38872832369942195 [2023-08-27 02:09:35,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 538 transitions. [2023-08-27 02:09:35,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 538 transitions. [2023-08-27 02:09:35,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:35,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 538 transitions. [2023-08-27 02:09:35,958 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 02:09:35,960 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 02:09:35,960 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 02:09:35,960 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 220 flow. Second operand 8 states and 538 transitions. [2023-08-27 02:09:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 384 flow [2023-08-27 02:09:35,962 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 02:09:35,963 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 229 flow [2023-08-27 02:09:35,963 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 02:09:35,964 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 02:09:35,964 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 229 flow [2023-08-27 02:09:35,964 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 02:09:35,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:35,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:09:35,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:35,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120186, now seen corresponding path program 3 times [2023-08-27 02:09:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670322919] [2023-08-27 02:09:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:35,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,036 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 02:09:36,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670322919] [2023-08-27 02:09:36,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670322919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:36,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566634619] [2023-08-27 02:09:36,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:36,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:36,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:36,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:36,039 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 02:09:36,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:36,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,116 INFO L124 PetriNetUnfolderBase]: 85/144 cut-off events. [2023-08-27 02:09:36,116 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-27 02:09:36,116 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 02:09:36,117 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2023-08-27 02:09:36,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 427 flow [2023-08-27 02:09:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 02:09:36,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 02:09:36,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 02:09:36,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 02:09:36,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 02:09:36,120 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 02:09:36,121 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 02:09:36,121 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 02:09:36,121 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 229 flow. Second operand 6 states and 413 transitions. [2023-08-27 02:09:36,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 427 flow [2023-08-27 02:09:36,122 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 02:09:36,123 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 275 flow [2023-08-27 02:09:36,123 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 02:09:36,125 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 02:09:36,125 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 275 flow [2023-08-27 02:09:36,125 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 02:09:36,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:09:36,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120157, now seen corresponding path program 3 times [2023-08-27 02:09:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182704124] [2023-08-27 02:09:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,182 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 02:09:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182704124] [2023-08-27 02:09:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182704124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:09:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658413836] [2023-08-27 02:09:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:09:36,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:09:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:09:36,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:36,184 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 02:09:36,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:36,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,286 INFO L124 PetriNetUnfolderBase]: 88/149 cut-off events. [2023-08-27 02:09:36,286 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-27 02:09:36,287 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 02:09:36,287 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 42 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2023-08-27 02:09:36,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 474 flow [2023-08-27 02:09:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2023-08-27 02:09:36,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916184971098266 [2023-08-27 02:09:36,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 542 transitions. [2023-08-27 02:09:36,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 542 transitions. [2023-08-27 02:09:36,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 542 transitions. [2023-08-27 02:09:36,290 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 02:09:36,292 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 02:09:36,292 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 02:09:36,292 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 275 flow. Second operand 8 states and 542 transitions. [2023-08-27 02:09:36,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 474 flow [2023-08-27 02:09:36,294 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 02:09:36,294 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 293 flow [2023-08-27 02:09:36,294 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 02:09:36,295 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-08-27 02:09:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 293 flow [2023-08-27 02:09:36,295 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 02:09:36,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:09:36,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 250162263, now seen corresponding path program 1 times [2023-08-27 02:09:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7206684] [2023-08-27 02:09:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,320 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 02:09:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7206684] [2023-08-27 02:09:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7206684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440044763] [2023-08-27 02:09:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:36,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:36,322 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 02:09:36,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:36,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,402 INFO L124 PetriNetUnfolderBase]: 140/243 cut-off events. [2023-08-27 02:09:36,402 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-08-27 02:09:36,403 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 02:09:36,404 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 51 selfloop transitions, 34 changer transitions 0/85 dead transitions. [2023-08-27 02:09:36,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 691 flow [2023-08-27 02:09:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 499 transitions. [2023-08-27 02:09:36,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412056151940545 [2023-08-27 02:09:36,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 499 transitions. [2023-08-27 02:09:36,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 499 transitions. [2023-08-27 02:09:36,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 499 transitions. [2023-08-27 02:09:36,407 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 02:09:36,408 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 02:09:36,409 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 02:09:36,409 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 293 flow. Second operand 7 states and 499 transitions. [2023-08-27 02:09:36,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 691 flow [2023-08-27 02:09:36,411 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 02:09:36,412 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 524 flow [2023-08-27 02:09:36,412 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 02:09:36,412 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-27 02:09:36,412 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 524 flow [2023-08-27 02:09:36,412 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 02:09:36,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:09:36,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash 248778423, now seen corresponding path program 2 times [2023-08-27 02:09:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724255763] [2023-08-27 02:09:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,438 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 02:09:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724255763] [2023-08-27 02:09:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724255763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018169346] [2023-08-27 02:09:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:36,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:36,440 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 02:09:36,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:36,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,546 INFO L124 PetriNetUnfolderBase]: 155/288 cut-off events. [2023-08-27 02:09:36,546 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2023-08-27 02:09:36,546 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 02:09:36,548 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2023-08-27 02:09:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 987 flow [2023-08-27 02:09:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 580 transitions. [2023-08-27 02:09:36,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190751445086705 [2023-08-27 02:09:36,550 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 580 transitions. [2023-08-27 02:09:36,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 580 transitions. [2023-08-27 02:09:36,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 580 transitions. [2023-08-27 02:09:36,551 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 02:09:36,553 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 02:09:36,553 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 02:09:36,553 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 524 flow. Second operand 8 states and 580 transitions. [2023-08-27 02:09:36,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 987 flow [2023-08-27 02:09:36,557 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 02:09:36,559 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 711 flow [2023-08-27 02:09:36,559 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 02:09:36,559 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-08-27 02:09:36,559 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 711 flow [2023-08-27 02:09:36,560 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 02:09:36,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:09:36,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 248773434, now seen corresponding path program 1 times [2023-08-27 02:09:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913805230] [2023-08-27 02:09:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,585 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 02:09:36,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913805230] [2023-08-27 02:09:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913805230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303874754] [2023-08-27 02:09:36,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:36,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:36,587 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 02:09:36,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:36,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,669 INFO L124 PetriNetUnfolderBase]: 164/325 cut-off events. [2023-08-27 02:09:36,669 INFO L125 PetriNetUnfolderBase]: For 1993/1993 co-relation queries the response was YES. [2023-08-27 02:09:36,670 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 02:09:36,671 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 74 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2023-08-27 02:09:36,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 997 flow [2023-08-27 02:09:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:09:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:09:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2023-08-27 02:09:36,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41965317919075146 [2023-08-27 02:09:36,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 363 transitions. [2023-08-27 02:09:36,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 363 transitions. [2023-08-27 02:09:36,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 363 transitions. [2023-08-27 02:09:36,674 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 02:09:36,675 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 02:09:36,675 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 02:09:36,675 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 711 flow. Second operand 5 states and 363 transitions. [2023-08-27 02:09:36,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 997 flow [2023-08-27 02:09:36,681 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 02:09:36,683 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 707 flow [2023-08-27 02:09:36,683 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 02:09:36,683 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2023-08-27 02:09:36,683 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 707 flow [2023-08-27 02:09:36,683 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 02:09:36,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:09:36,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash 248777154, now seen corresponding path program 2 times [2023-08-27 02:09:36,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450490649] [2023-08-27 02:09:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,709 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 02:09:36,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450490649] [2023-08-27 02:09:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450490649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:36,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833231593] [2023-08-27 02:09:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:36,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:36,711 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 02:09:36,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:36,792 INFO L124 PetriNetUnfolderBase]: 175/354 cut-off events. [2023-08-27 02:09:36,792 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2023-08-27 02:09:36,793 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 02:09:36,794 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 63 selfloop transitions, 28 changer transitions 0/91 dead transitions. [2023-08-27 02:09:36,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 1042 flow [2023-08-27 02:09:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 02:09:36,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123314065510597 [2023-08-27 02:09:36,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 02:09:36,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 02:09:36,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:36,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 02:09:36,797 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 02:09:36,798 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 02:09:36,798 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 02:09:36,798 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 707 flow. Second operand 6 states and 428 transitions. [2023-08-27 02:09:36,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 1042 flow [2023-08-27 02:09:36,805 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 02:09:36,806 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 783 flow [2023-08-27 02:09:36,807 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 02:09:36,807 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-08-27 02:09:36,807 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 783 flow [2023-08-27 02:09:36,807 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 02:09:36,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:36,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:36,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:09:36,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:36,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash 248783044, now seen corresponding path program 1 times [2023-08-27 02:09:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275690936] [2023-08-27 02:09:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,829 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 02:09:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275690936] [2023-08-27 02:09:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275690936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863508891] [2023-08-27 02:09:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:36,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:36,832 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 02:09:36,837 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 02:09:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:36,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:09:36,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:36,923 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 02:09:36,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:36,958 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 02:09:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863508891] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:36,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 02:09:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 02:09:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573320085] [2023-08-27 02:09:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:36,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:36,960 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 02:09:36,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:36,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:36,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:37,042 INFO L124 PetriNetUnfolderBase]: 164/333 cut-off events. [2023-08-27 02:09:37,042 INFO L125 PetriNetUnfolderBase]: For 2492/2492 co-relation queries the response was YES. [2023-08-27 02:09:37,043 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 02:09:37,045 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 66 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2023-08-27 02:09:37,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 1049 flow [2023-08-27 02:09:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2023-08-27 02:09:37,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229287090558767 [2023-08-27 02:09:37,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2023-08-27 02:09:37,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2023-08-27 02:09:37,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:37,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2023-08-27 02:09:37,047 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 02:09:37,048 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 02:09:37,048 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 02:09:37,048 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 783 flow. Second operand 6 states and 439 transitions. [2023-08-27 02:09:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 1049 flow [2023-08-27 02:09:37,054 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 02:09:37,055 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 792 flow [2023-08-27 02:09:37,055 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 02:09:37,056 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 52 predicate places. [2023-08-27 02:09:37,056 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 792 flow [2023-08-27 02:09:37,056 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 02:09:37,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:37,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:37,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 02:09:37,260 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 02:09:37,260 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:37,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash 262184373, now seen corresponding path program 3 times [2023-08-27 02:09:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773479767] [2023-08-27 02:09:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:37,286 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 02:09:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773479767] [2023-08-27 02:09:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773479767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432847344] [2023-08-27 02:09:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:37,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:37,288 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 02:09:37,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:37,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:37,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:37,369 INFO L124 PetriNetUnfolderBase]: 148/297 cut-off events. [2023-08-27 02:09:37,369 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2023-08-27 02:09:37,369 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 02:09:37,371 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 61 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2023-08-27 02:09:37,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 1067 flow [2023-08-27 02:09:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2023-08-27 02:09:37,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41329479768786126 [2023-08-27 02:09:37,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2023-08-27 02:09:37,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2023-08-27 02:09:37,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:37,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2023-08-27 02:09:37,373 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 02:09:37,374 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 02:09:37,374 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 02:09:37,375 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 792 flow. Second operand 6 states and 429 transitions. [2023-08-27 02:09:37,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 1067 flow [2023-08-27 02:09:37,379 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 02:09:37,381 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 822 flow [2023-08-27 02:09:37,381 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 02:09:37,381 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2023-08-27 02:09:37,381 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 822 flow [2023-08-27 02:09:37,381 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 02:09:37,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:37,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:37,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 02:09:37,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:37,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash 263970564, now seen corresponding path program 3 times [2023-08-27 02:09:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504461195] [2023-08-27 02:09:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:37,421 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 02:09:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504461195] [2023-08-27 02:09:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504461195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363381345] [2023-08-27 02:09:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:37,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:37,423 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 02:09:37,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:37,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:37,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:37,511 INFO L124 PetriNetUnfolderBase]: 188/399 cut-off events. [2023-08-27 02:09:37,512 INFO L125 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2023-08-27 02:09:37,513 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 02:09:37,514 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 48 changer transitions 0/106 dead transitions. [2023-08-27 02:09:37,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1383 flow [2023-08-27 02:09:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2023-08-27 02:09:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087530966143683 [2023-08-27 02:09:37,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2023-08-27 02:09:37,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2023-08-27 02:09:37,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:37,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2023-08-27 02:09:37,517 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 02:09:37,518 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 02:09:37,518 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 02:09:37,518 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 822 flow. Second operand 7 states and 495 transitions. [2023-08-27 02:09:37,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1383 flow [2023-08-27 02:09:37,525 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 02:09:37,526 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 1231 flow [2023-08-27 02:09:37,526 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 02:09:37,527 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2023-08-27 02:09:37,527 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 1231 flow [2023-08-27 02:09:37,527 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 02:09:37,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:37,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:09:37,527 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:37,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash 262179384, now seen corresponding path program 4 times [2023-08-27 02:09:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610644347] [2023-08-27 02:09:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:37,554 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 02:09:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610644347] [2023-08-27 02:09:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610644347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649858856] [2023-08-27 02:09:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:37,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:37,556 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 02:09:37,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:37,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:37,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:37,657 INFO L124 PetriNetUnfolderBase]: 176/373 cut-off events. [2023-08-27 02:09:37,658 INFO L125 PetriNetUnfolderBase]: For 3934/3934 co-relation queries the response was YES. [2023-08-27 02:09:37,659 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 02:09:37,661 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 85 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2023-08-27 02:09:37,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 1503 flow [2023-08-27 02:09:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:09:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:09:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-27 02:09:37,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42427745664739885 [2023-08-27 02:09:37,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-27 02:09:37,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-27 02:09:37,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:37,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-27 02:09:37,662 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 02:09:37,663 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 02:09:37,663 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 02:09:37,663 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 1231 flow. Second operand 5 states and 367 transitions. [2023-08-27 02:09:37,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 1503 flow [2023-08-27 02:09:37,672 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 02:09:37,673 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 1250 flow [2023-08-27 02:09:37,673 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 02:09:37,674 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2023-08-27 02:09:37,674 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 1250 flow [2023-08-27 02:09:37,674 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 02:09:37,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:37,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 02:09:37,674 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:37,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 262183104, now seen corresponding path program 5 times [2023-08-27 02:09:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689994401] [2023-08-27 02:09:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:37,695 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 02:09:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689994401] [2023-08-27 02:09:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689994401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451188305] [2023-08-27 02:09:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:37,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:37,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:37,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:37,697 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 02:09:37,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:37,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:37,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:37,802 INFO L124 PetriNetUnfolderBase]: 171/358 cut-off events. [2023-08-27 02:09:37,803 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2023-08-27 02:09:37,804 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 02:09:37,806 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 38 changer transitions 0/109 dead transitions. [2023-08-27 02:09:37,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 1560 flow [2023-08-27 02:09:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 570 transitions. [2023-08-27 02:09:37,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 02:09:37,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 570 transitions. [2023-08-27 02:09:37,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 570 transitions. [2023-08-27 02:09:37,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:37,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 570 transitions. [2023-08-27 02:09:37,808 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 02:09:37,809 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 02:09:37,809 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 02:09:37,809 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 1250 flow. Second operand 8 states and 570 transitions. [2023-08-27 02:09:37,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 1560 flow [2023-08-27 02:09:37,818 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 02:09:37,820 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1261 flow [2023-08-27 02:09:37,820 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 02:09:37,820 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-08-27 02:09:37,820 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1261 flow [2023-08-27 02:09:37,821 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 02:09:37,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:37,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:37,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 02:09:37,821 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:37,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 262188994, now seen corresponding path program 2 times [2023-08-27 02:09:37,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:37,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449567592] [2023-08-27 02:09:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:37,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:37,841 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 02:09:37,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449567592] [2023-08-27 02:09:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449567592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756050035] [2023-08-27 02:09:37,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:09:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:37,843 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 02:09:37,845 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 02:09:37,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:09:37,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:37,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:09:37,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:37,902 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 02:09:37,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:37,924 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 02:09:37,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756050035] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:37,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 02:09:37,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 02:09:37,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036934698] [2023-08-27 02:09:37,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:37,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:37,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:37,926 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 02:09:37,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:37,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:37,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:38,012 INFO L124 PetriNetUnfolderBase]: 160/337 cut-off events. [2023-08-27 02:09:38,012 INFO L125 PetriNetUnfolderBase]: For 3522/3522 co-relation queries the response was YES. [2023-08-27 02:09:38,013 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 02:09:38,014 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 63 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2023-08-27 02:09:38,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 92 transitions, 1433 flow [2023-08-27 02:09:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:09:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:09:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-27 02:09:38,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161849710982659 [2023-08-27 02:09:38,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-27 02:09:38,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-27 02:09:38,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:38,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-27 02:09:38,016 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 02:09:38,017 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 02:09:38,017 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 02:09:38,017 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1261 flow. Second operand 5 states and 360 transitions. [2023-08-27 02:09:38,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 92 transitions, 1433 flow [2023-08-27 02:09:38,025 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 02:09:38,027 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 1145 flow [2023-08-27 02:09:38,027 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 02:09:38,027 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2023-08-27 02:09:38,027 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 1145 flow [2023-08-27 02:09:38,027 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 02:09:38,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:38,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:38,037 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 02:09:38,234 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 02:09:38,235 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:38,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1920685740, now seen corresponding path program 1 times [2023-08-27 02:09:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398379083] [2023-08-27 02:09:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:38,287 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 02:09:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398379083] [2023-08-27 02:09:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398379083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302832979] [2023-08-27 02:09:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:38,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:38,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:38,289 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 02:09:38,290 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 02:09:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:38,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 02:09:38,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:38,393 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 02:09:38,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:38,449 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 02:09:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302832979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:38,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 02:09:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773725181] [2023-08-27 02:09:38,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 02:09:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 02:09:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-27 02:09:38,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:38,452 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 02:09:38,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:38,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:38,891 INFO L124 PetriNetUnfolderBase]: 156/359 cut-off events. [2023-08-27 02:09:38,891 INFO L125 PetriNetUnfolderBase]: For 3179/3179 co-relation queries the response was YES. [2023-08-27 02:09:38,892 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 02:09:38,894 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 76 selfloop transitions, 65 changer transitions 0/141 dead transitions. [2023-08-27 02:09:38,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 141 transitions, 1687 flow [2023-08-27 02:09:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:09:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:09:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1543 transitions. [2023-08-27 02:09:38,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38778587584820307 [2023-08-27 02:09:38,896 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1543 transitions. [2023-08-27 02:09:38,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1543 transitions. [2023-08-27 02:09:38,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:38,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1543 transitions. [2023-08-27 02:09:38,898 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 02:09:38,901 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 02:09:38,902 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 02:09:38,902 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 1145 flow. Second operand 23 states and 1543 transitions. [2023-08-27 02:09:38,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 141 transitions, 1687 flow [2023-08-27 02:09:38,910 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 02:09:38,911 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 1205 flow [2023-08-27 02:09:38,911 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 02:09:38,912 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 02:09:38,912 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 1205 flow [2023-08-27 02:09:38,912 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 02:09:38,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:38,912 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:38,919 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 02:09:39,119 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 02:09:39,119 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:39,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -255361630, now seen corresponding path program 1 times [2023-08-27 02:09:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562449522] [2023-08-27 02:09:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:39,154 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 02:09:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562449522] [2023-08-27 02:09:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562449522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443553155] [2023-08-27 02:09:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:39,155 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 02:09:39,157 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 02:09:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:39,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:09:39,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:39,216 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 02:09:39,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:39,272 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 02:09:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443553155] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:39,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 02:09:39,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719782510] [2023-08-27 02:09:39,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:09:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:09:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:09:39,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:39,274 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 02:09:39,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:39,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:39,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:39,460 INFO L124 PetriNetUnfolderBase]: 184/431 cut-off events. [2023-08-27 02:09:39,460 INFO L125 PetriNetUnfolderBase]: For 3389/3389 co-relation queries the response was YES. [2023-08-27 02:09:39,461 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 02:09:39,463 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 77 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2023-08-27 02:09:39,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 135 transitions, 1871 flow [2023-08-27 02:09:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 02:09:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 02:09:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 855 transitions. [2023-08-27 02:09:39,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 02:09:39,464 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 855 transitions. [2023-08-27 02:09:39,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 855 transitions. [2023-08-27 02:09:39,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:39,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 855 transitions. [2023-08-27 02:09:39,465 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 02:09:39,467 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 02:09:39,467 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 02:09:39,467 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 1205 flow. Second operand 12 states and 855 transitions. [2023-08-27 02:09:39,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 135 transitions, 1871 flow [2023-08-27 02:09:39,476 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 02:09:39,477 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 1359 flow [2023-08-27 02:09:39,477 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 02:09:39,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 02:09:39,478 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 1359 flow [2023-08-27 02:09:39,478 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 02:09:39,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:39,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:39,487 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 02:09:39,682 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 02:09:39,682 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:39,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -839521477, now seen corresponding path program 2 times [2023-08-27 02:09:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896892335] [2023-08-27 02:09:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:39,734 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 02:09:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896892335] [2023-08-27 02:09:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896892335] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113952642] [2023-08-27 02:09:39,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:09:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:39,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:39,735 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 02:09:39,737 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 02:09:39,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:09:39,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:39,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 02:09:39,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:39,845 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 02:09:39,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:39,904 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 02:09:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113952642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:39,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:39,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 02:09:39,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316497417] [2023-08-27 02:09:39,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 02:09:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 02:09:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-27 02:09:39,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:39,907 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 02:09:39,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:39,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:39,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:40,208 INFO L124 PetriNetUnfolderBase]: 202/475 cut-off events. [2023-08-27 02:09:40,208 INFO L125 PetriNetUnfolderBase]: For 4246/4246 co-relation queries the response was YES. [2023-08-27 02:09:40,209 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 02:09:40,212 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 77 selfloop transitions, 68 changer transitions 0/145 dead transitions. [2023-08-27 02:09:40,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 145 transitions, 2027 flow [2023-08-27 02:09:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:09:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:09:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1016 transitions. [2023-08-27 02:09:40,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915221579961464 [2023-08-27 02:09:40,213 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1016 transitions. [2023-08-27 02:09:40,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1016 transitions. [2023-08-27 02:09:40,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:40,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1016 transitions. [2023-08-27 02:09:40,215 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 02:09:40,217 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 02:09:40,217 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 02:09:40,217 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 1359 flow. Second operand 15 states and 1016 transitions. [2023-08-27 02:09:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 145 transitions, 2027 flow [2023-08-27 02:09:40,227 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 02:09:40,229 INFO L231 Difference]: Finished difference. Result has 133 places, 102 transitions, 1590 flow [2023-08-27 02:09:40,229 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 02:09:40,229 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 105 predicate places. [2023-08-27 02:09:40,229 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 102 transitions, 1590 flow [2023-08-27 02:09:40,230 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 02:09:40,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:40,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:40,243 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 02:09:40,434 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 02:09:40,434 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:40,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1437766420, now seen corresponding path program 3 times [2023-08-27 02:09:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:40,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240381800] [2023-08-27 02:09:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:40,463 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 02:09:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240381800] [2023-08-27 02:09:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240381800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342965622] [2023-08-27 02:09:40,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:09:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:40,464 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 02:09:40,466 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 02:09:40,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:09:40,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:40,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:09:40,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:40,519 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 02:09:40,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:40,552 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 02:09:40,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342965622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:40,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:40,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2023-08-27 02:09:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871153068] [2023-08-27 02:09:40,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:40,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:09:40,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:09:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:09:40,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 02:09:40,554 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 02:09:40,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:40,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 02:09:40,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:40,701 INFO L124 PetriNetUnfolderBase]: 261/630 cut-off events. [2023-08-27 02:09:40,701 INFO L125 PetriNetUnfolderBase]: For 6902/6902 co-relation queries the response was YES. [2023-08-27 02:09:40,703 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 02:09:40,706 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 85 selfloop transitions, 72 changer transitions 0/157 dead transitions. [2023-08-27 02:09:40,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 157 transitions, 2624 flow [2023-08-27 02:09:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:09:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:09:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 635 transitions. [2023-08-27 02:09:40,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40783558124598585 [2023-08-27 02:09:40,707 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 635 transitions. [2023-08-27 02:09:40,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 635 transitions. [2023-08-27 02:09:40,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:40,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 635 transitions. [2023-08-27 02:09:40,708 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 02:09:40,710 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 02:09:40,710 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 02:09:40,710 INFO L175 Difference]: Start difference. First operand has 133 places, 102 transitions, 1590 flow. Second operand 9 states and 635 transitions. [2023-08-27 02:09:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 157 transitions, 2624 flow [2023-08-27 02:09:40,727 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 02:09:40,729 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 2302 flow [2023-08-27 02:09:40,729 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 02:09:40,730 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2023-08-27 02:09:40,730 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 2302 flow [2023-08-27 02:09:40,730 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 02:09:40,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:40,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:40,737 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 02:09:40,937 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 02:09:40,937 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:40,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash -877659847, now seen corresponding path program 4 times [2023-08-27 02:09:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080819878] [2023-08-27 02:09:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:40,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:40,984 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 02:09:40,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080819878] [2023-08-27 02:09:40,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080819878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398154358] [2023-08-27 02:09:40,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:09:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:40,985 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 02:09:40,987 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 02:09:41,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:09:41,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:41,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 02:09:41,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:41,087 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 02:09:41,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:41,156 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 02:09:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398154358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:41,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 02:09:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277253655] [2023-08-27 02:09:41,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:41,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 02:09:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 02:09:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-08-27 02:09:41,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:41,159 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 02:09:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:41,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:41,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:41,637 INFO L124 PetriNetUnfolderBase]: 302/689 cut-off events. [2023-08-27 02:09:41,638 INFO L125 PetriNetUnfolderBase]: For 10281/10281 co-relation queries the response was YES. [2023-08-27 02:09:41,640 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 02:09:41,643 INFO L140 encePairwiseOnDemand]: 163/173 looper letters, 82 selfloop transitions, 124 changer transitions 0/206 dead transitions. [2023-08-27 02:09:41,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 206 transitions, 3439 flow [2023-08-27 02:09:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 02:09:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 02:09:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1678 transitions. [2023-08-27 02:09:41,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38797687861271674 [2023-08-27 02:09:41,646 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1678 transitions. [2023-08-27 02:09:41,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1678 transitions. [2023-08-27 02:09:41,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:41,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1678 transitions. [2023-08-27 02:09:41,648 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 02:09:41,651 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 02:09:41,651 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 02:09:41,651 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 2302 flow. Second operand 25 states and 1678 transitions. [2023-08-27 02:09:41,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 206 transitions, 3439 flow [2023-08-27 02:09:41,679 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 02:09:41,681 INFO L231 Difference]: Finished difference. Result has 175 places, 156 transitions, 3067 flow [2023-08-27 02:09:41,681 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 02:09:41,682 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2023-08-27 02:09:41,682 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 156 transitions, 3067 flow [2023-08-27 02:09:41,682 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 02:09:41,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:41,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:41,688 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 02:09:41,886 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 02:09:41,886 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:41,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -462079117, now seen corresponding path program 5 times [2023-08-27 02:09:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:41,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617193835] [2023-08-27 02:09:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:41,946 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 02:09:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617193835] [2023-08-27 02:09:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617193835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100220934] [2023-08-27 02:09:41,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:09:41,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:41,948 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 02:09:41,950 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 02:09:41,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:09:41,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:41,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:09:41,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:42,031 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 02:09:42,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:42,061 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 02:09:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100220934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:42,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-08-27 02:09:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524593757] [2023-08-27 02:09:42,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:09:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:09:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 02:09:42,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:42,063 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 02:09:42,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:42,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:42,407 INFO L124 PetriNetUnfolderBase]: 302/701 cut-off events. [2023-08-27 02:09:42,407 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2023-08-27 02:09:42,410 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 02:09:42,414 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 101 selfloop transitions, 94 changer transitions 0/195 dead transitions. [2023-08-27 02:09:42,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 195 transitions, 3727 flow [2023-08-27 02:09:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:09:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:09:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1147 transitions. [2023-08-27 02:09:42,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39000340020401225 [2023-08-27 02:09:42,417 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1147 transitions. [2023-08-27 02:09:42,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1147 transitions. [2023-08-27 02:09:42,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:42,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1147 transitions. [2023-08-27 02:09:42,418 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 02:09:42,421 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 02:09:42,421 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 02:09:42,421 INFO L175 Difference]: Start difference. First operand has 175 places, 156 transitions, 3067 flow. Second operand 17 states and 1147 transitions. [2023-08-27 02:09:42,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 195 transitions, 3727 flow [2023-08-27 02:09:42,462 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 02:09:42,465 INFO L231 Difference]: Finished difference. Result has 179 places, 155 transitions, 2881 flow [2023-08-27 02:09:42,465 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 02:09:42,467 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2023-08-27 02:09:42,468 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 155 transitions, 2881 flow [2023-08-27 02:09:42,468 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 02:09:42,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:42,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:42,476 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 02:09:42,672 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 02:09:42,672 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:42,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1481300573, now seen corresponding path program 1 times [2023-08-27 02:09:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88526674] [2023-08-27 02:09:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:42,875 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 02:09:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88526674] [2023-08-27 02:09:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88526674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:09:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306409575] [2023-08-27 02:09:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:42,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:09:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:09:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:09:42,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 02:09:42,877 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 02:09:42,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:42,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 02:09:42,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:43,068 INFO L124 PetriNetUnfolderBase]: 301/705 cut-off events. [2023-08-27 02:09:43,068 INFO L125 PetriNetUnfolderBase]: For 12127/12127 co-relation queries the response was YES. [2023-08-27 02:09:43,071 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 02:09:43,080 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 116 selfloop transitions, 48 changer transitions 9/173 dead transitions. [2023-08-27 02:09:43,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 173 transitions, 3356 flow [2023-08-27 02:09:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 442 transitions. [2023-08-27 02:09:43,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36498761354252685 [2023-08-27 02:09:43,082 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 442 transitions. [2023-08-27 02:09:43,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 442 transitions. [2023-08-27 02:09:43,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:43,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 442 transitions. [2023-08-27 02:09:43,084 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 02:09:43,085 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 02:09:43,085 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 02:09:43,085 INFO L175 Difference]: Start difference. First operand has 179 places, 155 transitions, 2881 flow. Second operand 7 states and 442 transitions. [2023-08-27 02:09:43,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 173 transitions, 3356 flow [2023-08-27 02:09:43,122 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 02:09:43,125 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 2752 flow [2023-08-27 02:09:43,125 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 02:09:43,127 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2023-08-27 02:09:43,127 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 2752 flow [2023-08-27 02:09:43,127 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 02:09:43,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:43,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:43,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 02:09:43,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:43,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1705253575, now seen corresponding path program 2 times [2023-08-27 02:09:43,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:43,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512644157] [2023-08-27 02:09:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:43,225 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 02:09:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512644157] [2023-08-27 02:09:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512644157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:43,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659752251] [2023-08-27 02:09:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:43,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:43,227 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 02:09:43,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:43,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:43,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:43,383 INFO L124 PetriNetUnfolderBase]: 289/673 cut-off events. [2023-08-27 02:09:43,383 INFO L125 PetriNetUnfolderBase]: For 12256/12256 co-relation queries the response was YES. [2023-08-27 02:09:43,385 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 02:09:43,388 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 114 selfloop transitions, 46 changer transitions 6/166 dead transitions. [2023-08-27 02:09:43,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 166 transitions, 3208 flow [2023-08-27 02:09:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 479 transitions. [2023-08-27 02:09:43,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955408753096614 [2023-08-27 02:09:43,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 479 transitions. [2023-08-27 02:09:43,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 479 transitions. [2023-08-27 02:09:43,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:43,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 479 transitions. [2023-08-27 02:09:43,391 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 02:09:43,392 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 02:09:43,393 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 02:09:43,393 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 2752 flow. Second operand 7 states and 479 transitions. [2023-08-27 02:09:43,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 166 transitions, 3208 flow [2023-08-27 02:09:43,421 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 02:09:43,424 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 2681 flow [2023-08-27 02:09:43,424 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 02:09:43,424 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2023-08-27 02:09:43,424 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 2681 flow [2023-08-27 02:09:43,425 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 02:09:43,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:43,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 02:09:43,425 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:43,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1735813375, now seen corresponding path program 3 times [2023-08-27 02:09:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419699585] [2023-08-27 02:09:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:43,515 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 02:09:43,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:43,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419699585] [2023-08-27 02:09:43,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419699585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:43,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536327023] [2023-08-27 02:09:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:43,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:43,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:43,517 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 02:09:43,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:43,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:43,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:43,660 INFO L124 PetriNetUnfolderBase]: 285/659 cut-off events. [2023-08-27 02:09:43,660 INFO L125 PetriNetUnfolderBase]: For 11645/11645 co-relation queries the response was YES. [2023-08-27 02:09:43,663 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 02:09:43,665 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 111 selfloop transitions, 44 changer transitions 7/162 dead transitions. [2023-08-27 02:09:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 3122 flow [2023-08-27 02:09:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 02:09:43,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 02:09:43,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 02:09:43,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 02:09:43,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:43,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 02:09:43,667 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 02:09:43,668 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 02:09:43,668 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 02:09:43,669 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 2681 flow. Second operand 7 states and 476 transitions. [2023-08-27 02:09:43,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 3122 flow [2023-08-27 02:09:43,697 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 02:09:43,700 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 2599 flow [2023-08-27 02:09:43,700 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 02:09:43,700 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 139 predicate places. [2023-08-27 02:09:43,700 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 2599 flow [2023-08-27 02:09:43,701 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 02:09:43,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:43,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 02:09:43,701 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:43,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -903842691, now seen corresponding path program 4 times [2023-08-27 02:09:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:43,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590431744] [2023-08-27 02:09:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:43,791 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 02:09:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590431744] [2023-08-27 02:09:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590431744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:43,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523773279] [2023-08-27 02:09:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:43,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:43,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:43,794 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 02:09:43,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:43,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:43,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:43,947 INFO L124 PetriNetUnfolderBase]: 283/648 cut-off events. [2023-08-27 02:09:43,947 INFO L125 PetriNetUnfolderBase]: For 11573/11573 co-relation queries the response was YES. [2023-08-27 02:09:43,949 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 02:09:43,951 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 86 selfloop transitions, 64 changer transitions 8/158 dead transitions. [2023-08-27 02:09:43,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 3017 flow [2023-08-27 02:09:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 471 transitions. [2023-08-27 02:09:43,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38893476465730803 [2023-08-27 02:09:43,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 471 transitions. [2023-08-27 02:09:43,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 471 transitions. [2023-08-27 02:09:43,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:43,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 471 transitions. [2023-08-27 02:09:43,959 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 02:09:43,960 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 02:09:43,960 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 02:09:43,960 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 2599 flow. Second operand 7 states and 471 transitions. [2023-08-27 02:09:43,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 3017 flow [2023-08-27 02:09:43,986 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 02:09:43,988 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 2567 flow [2023-08-27 02:09:43,988 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 02:09:43,989 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2023-08-27 02:09:43,989 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 2567 flow [2023-08-27 02:09:43,989 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 02:09:43,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:43,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:43,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 02:09:43,990 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:43,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1680511297, now seen corresponding path program 5 times [2023-08-27 02:09:43,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313032304] [2023-08-27 02:09:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:44,081 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 02:09:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313032304] [2023-08-27 02:09:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313032304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:44,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087985877] [2023-08-27 02:09:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:44,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:44,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:44,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:44,084 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 02:09:44,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:44,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:44,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:44,222 INFO L124 PetriNetUnfolderBase]: 279/628 cut-off events. [2023-08-27 02:09:44,223 INFO L125 PetriNetUnfolderBase]: For 11818/11818 co-relation queries the response was YES. [2023-08-27 02:09:44,225 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 02:09:44,227 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 104 selfloop transitions, 43 changer transitions 7/154 dead transitions. [2023-08-27 02:09:44,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 154 transitions, 2977 flow [2023-08-27 02:09:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-27 02:09:44,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922378199834847 [2023-08-27 02:09:44,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-27 02:09:44,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-27 02:09:44,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:44,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-27 02:09:44,231 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 02:09:44,232 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 02:09:44,232 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 02:09:44,232 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 2567 flow. Second operand 7 states and 475 transitions. [2023-08-27 02:09:44,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 154 transitions, 2977 flow [2023-08-27 02:09:44,257 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 02:09:44,259 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 2441 flow [2023-08-27 02:09:44,259 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 02:09:44,260 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2023-08-27 02:09:44,260 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 2441 flow [2023-08-27 02:09:44,260 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 02:09:44,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:44,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 02:09:44,260 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:44,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1708216927, now seen corresponding path program 6 times [2023-08-27 02:09:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032024085] [2023-08-27 02:09:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:44,346 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 02:09:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032024085] [2023-08-27 02:09:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032024085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:44,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582771166] [2023-08-27 02:09:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:44,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:44,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:44,348 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 02:09:44,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:44,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:44,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:44,485 INFO L124 PetriNetUnfolderBase]: 276/611 cut-off events. [2023-08-27 02:09:44,485 INFO L125 PetriNetUnfolderBase]: For 11350/11350 co-relation queries the response was YES. [2023-08-27 02:09:44,487 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 02:09:44,489 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 102 selfloop transitions, 40 changer transitions 11/153 dead transitions. [2023-08-27 02:09:44,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 2854 flow [2023-08-27 02:09:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 02:09:44,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 02:09:44,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 02:09:44,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 02:09:44,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:44,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 02:09:44,491 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 02:09:44,492 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 02:09:44,493 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 02:09:44,493 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 2441 flow. Second operand 7 states and 476 transitions. [2023-08-27 02:09:44,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 2854 flow [2023-08-27 02:09:44,517 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 02:09:44,519 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 2304 flow [2023-08-27 02:09:44,519 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 02:09:44,519 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2023-08-27 02:09:44,519 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 2304 flow [2023-08-27 02:09:44,519 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 02:09:44,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:44,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 02:09:44,520 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:44,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1021697265, now seen corresponding path program 1 times [2023-08-27 02:09:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422942552] [2023-08-27 02:09:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:44,606 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 02:09:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422942552] [2023-08-27 02:09:44,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422942552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000954227] [2023-08-27 02:09:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:44,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:44,608 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 02:09:44,644 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 02:09:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:44,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:44,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:44,730 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 02:09:44,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:44,921 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 02:09:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000954227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:44,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 02:09:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96756543] [2023-08-27 02:09:44,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:44,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:09:44,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:09:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:09:44,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:44,926 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 02:09:44,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:44,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:44,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:45,300 INFO L124 PetriNetUnfolderBase]: 268/584 cut-off events. [2023-08-27 02:09:45,301 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2023-08-27 02:09:45,303 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 02:09:45,304 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 67 selfloop transitions, 64 changer transitions 33/164 dead transitions. [2023-08-27 02:09:45,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 164 transitions, 2856 flow [2023-08-27 02:09:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:09:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:09:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 741 transitions. [2023-08-27 02:09:45,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3893851812926957 [2023-08-27 02:09:45,306 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 741 transitions. [2023-08-27 02:09:45,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 741 transitions. [2023-08-27 02:09:45,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:45,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 741 transitions. [2023-08-27 02:09:45,307 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 02:09:45,309 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 02:09:45,309 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 02:09:45,310 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 2304 flow. Second operand 11 states and 741 transitions. [2023-08-27 02:09:45,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 164 transitions, 2856 flow [2023-08-27 02:09:45,331 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 02:09:45,333 INFO L231 Difference]: Finished difference. Result has 153 places, 115 transitions, 1879 flow [2023-08-27 02:09:45,333 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 02:09:45,333 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2023-08-27 02:09:45,333 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 1879 flow [2023-08-27 02:09:45,334 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 02:09:45,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:45,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:45,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:09:45,538 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 02:09:45,538 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:45,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1365180121, now seen corresponding path program 2 times [2023-08-27 02:09:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201985419] [2023-08-27 02:09:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:45,651 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 02:09:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201985419] [2023-08-27 02:09:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201985419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549077350] [2023-08-27 02:09:45,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:09:45,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:45,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:45,653 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 02:09:45,668 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 02:09:45,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:09:45,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:45,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:45,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:45,768 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 02:09:45,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:45,932 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 02:09:45,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549077350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:45,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:45,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 02:09:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227894212] [2023-08-27 02:09:45,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:45,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 02:09:45,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 02:09:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-08-27 02:09:45,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 02:09:45,935 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 02:09:45,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:45,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 02:09:45,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:46,209 INFO L124 PetriNetUnfolderBase]: 201/473 cut-off events. [2023-08-27 02:09:46,210 INFO L125 PetriNetUnfolderBase]: For 7508/7508 co-relation queries the response was YES. [2023-08-27 02:09:46,211 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 02:09:46,213 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 68 selfloop transitions, 61 changer transitions 15/144 dead transitions. [2023-08-27 02:09:46,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 144 transitions, 2388 flow [2023-08-27 02:09:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:09:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:09:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 685 transitions. [2023-08-27 02:09:46,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3599579611140305 [2023-08-27 02:09:46,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 685 transitions. [2023-08-27 02:09:46,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 685 transitions. [2023-08-27 02:09:46,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:46,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 685 transitions. [2023-08-27 02:09:46,215 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 02:09:46,217 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 02:09:46,217 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 02:09:46,217 INFO L175 Difference]: Start difference. First operand has 153 places, 115 transitions, 1879 flow. Second operand 11 states and 685 transitions. [2023-08-27 02:09:46,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 144 transitions, 2388 flow [2023-08-27 02:09:46,232 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 02:09:46,233 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 1612 flow [2023-08-27 02:09:46,233 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 02:09:46,234 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2023-08-27 02:09:46,234 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 1612 flow [2023-08-27 02:09:46,234 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 02:09:46,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:46,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:46,238 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 02:09:46,438 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 02:09:46,439 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:46,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1334620321, now seen corresponding path program 3 times [2023-08-27 02:09:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268202102] [2023-08-27 02:09:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:46,572 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 02:09:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268202102] [2023-08-27 02:09:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268202102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809352538] [2023-08-27 02:09:46,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:09:46,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:46,573 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 02:09:46,576 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 02:09:46,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 02:09:46,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:46,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:46,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:46,709 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 02:09:46,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:46,903 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 02:09:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809352538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:46,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 02:09:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130959291] [2023-08-27 02:09:46,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 02:09:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 02:09:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-08-27 02:09:46,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 02:09:46,906 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 02:09:46,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:46,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 02:09:46,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:47,129 INFO L124 PetriNetUnfolderBase]: 177/397 cut-off events. [2023-08-27 02:09:47,129 INFO L125 PetriNetUnfolderBase]: For 4705/4705 co-relation queries the response was YES. [2023-08-27 02:09:47,130 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 02:09:47,131 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 41 selfloop transitions, 32 changer transitions 59/132 dead transitions. [2023-08-27 02:09:47,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 2073 flow [2023-08-27 02:09:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:09:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:09:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 679 transitions. [2023-08-27 02:09:47,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35680504466631635 [2023-08-27 02:09:47,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 679 transitions. [2023-08-27 02:09:47,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 679 transitions. [2023-08-27 02:09:47,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:47,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 679 transitions. [2023-08-27 02:09:47,134 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 02:09:47,135 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 02:09:47,135 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 02:09:47,135 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 1612 flow. Second operand 11 states and 679 transitions. [2023-08-27 02:09:47,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 2073 flow [2023-08-27 02:09:47,145 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 02:09:47,147 INFO L231 Difference]: Finished difference. Result has 130 places, 62 transitions, 824 flow [2023-08-27 02:09:47,147 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 02:09:47,147 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2023-08-27 02:09:47,147 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 62 transitions, 824 flow [2023-08-27 02:09:47,148 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 02:09:47,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:47,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:47,152 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 02:09:47,351 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 02:09:47,352 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:47,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash 106573405, now seen corresponding path program 4 times [2023-08-27 02:09:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160839985] [2023-08-27 02:09:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:47,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:47,440 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 02:09:47,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160839985] [2023-08-27 02:09:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160839985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603999212] [2023-08-27 02:09:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:09:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:47,441 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 02:09:47,443 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 02:09:47,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:09:47,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:47,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:47,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:47,537 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 02:09:47,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:47,701 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 02:09:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603999212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:47,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 02:09:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108357586] [2023-08-27 02:09:47,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:47,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:09:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:09:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:09:47,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:47,704 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 02:09:47,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:47,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:48,075 INFO L124 PetriNetUnfolderBase]: 89/234 cut-off events. [2023-08-27 02:09:48,076 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-08-27 02:09:48,076 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 02:09:48,077 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 36 changer transitions 14/86 dead transitions. [2023-08-27 02:09:48,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 86 transitions, 1140 flow [2023-08-27 02:09:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:09:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:09:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 992 transitions. [2023-08-27 02:09:48,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38227360308285163 [2023-08-27 02:09:48,079 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 992 transitions. [2023-08-27 02:09:48,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 992 transitions. [2023-08-27 02:09:48,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:48,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 992 transitions. [2023-08-27 02:09:48,080 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 02:09:48,082 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 02:09:48,082 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 02:09:48,082 INFO L175 Difference]: Start difference. First operand has 130 places, 62 transitions, 824 flow. Second operand 15 states and 992 transitions. [2023-08-27 02:09:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 86 transitions, 1140 flow [2023-08-27 02:09:48,087 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 02:09:48,087 INFO L231 Difference]: Finished difference. Result has 105 places, 55 transitions, 647 flow [2023-08-27 02:09:48,088 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 02:09:48,088 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2023-08-27 02:09:48,088 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 55 transitions, 647 flow [2023-08-27 02:09:48,088 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 02:09:48,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:48,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:48,093 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 02:09:48,292 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 02:09:48,292 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:48,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash 935482781, now seen corresponding path program 5 times [2023-08-27 02:09:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124798170] [2023-08-27 02:09:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:48,381 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 02:09:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124798170] [2023-08-27 02:09:48,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124798170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939920119] [2023-08-27 02:09:48,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:09:48,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:48,383 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 02:09:48,385 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 02:09:48,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 02:09:48,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:48,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 02:09:48,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:48,497 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 02:09:48,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:48,578 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 02:09:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939920119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:48,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-08-27 02:09:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773793554] [2023-08-27 02:09:48,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:09:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:09:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:09:48,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:48,581 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 02:09:48,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:48,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:48,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:48,801 INFO L124 PetriNetUnfolderBase]: 82/205 cut-off events. [2023-08-27 02:09:48,801 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2023-08-27 02:09:48,802 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 02:09:48,803 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 28 changer transitions 17/81 dead transitions. [2023-08-27 02:09:48,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 954 flow [2023-08-27 02:09:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:09:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:09:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 927 transitions. [2023-08-27 02:09:48,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827415359207267 [2023-08-27 02:09:48,804 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 927 transitions. [2023-08-27 02:09:48,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 927 transitions. [2023-08-27 02:09:48,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:48,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 927 transitions. [2023-08-27 02:09:48,805 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 02:09:48,807 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 02:09:48,807 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 02:09:48,807 INFO L175 Difference]: Start difference. First operand has 105 places, 55 transitions, 647 flow. Second operand 14 states and 927 transitions. [2023-08-27 02:09:48,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 954 flow [2023-08-27 02:09:48,810 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 02:09:48,811 INFO L231 Difference]: Finished difference. Result has 106 places, 51 transitions, 601 flow [2023-08-27 02:09:48,812 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 02:09:48,812 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-27 02:09:48,812 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 51 transitions, 601 flow [2023-08-27 02:09:48,813 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 02:09:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:48,819 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 02:09:49,017 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 02:09:49,017 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:49,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash 966042581, now seen corresponding path program 6 times [2023-08-27 02:09:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:49,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516995401] [2023-08-27 02:09:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:49,115 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 02:09:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516995401] [2023-08-27 02:09:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516995401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148655272] [2023-08-27 02:09:49,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:09:49,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:49,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:49,116 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 02:09:49,119 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 02:09:49,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 02:09:49,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:49,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:49,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:49,214 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 02:09:49,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:49,359 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 02:09:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148655272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:49,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:49,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-27 02:09:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073106928] [2023-08-27 02:09:49,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:09:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:09:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-27 02:09:49,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:49,362 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 02:09:49,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:49,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:49,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:49,680 INFO L124 PetriNetUnfolderBase]: 67/170 cut-off events. [2023-08-27 02:09:49,681 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2023-08-27 02:09:49,681 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 02:09:49,682 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 26 changer transitions 10/70 dead transitions. [2023-08-27 02:09:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 818 flow [2023-08-27 02:09:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:09:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:09:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 920 transitions. [2023-08-27 02:09:49,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37985136251032203 [2023-08-27 02:09:49,683 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 920 transitions. [2023-08-27 02:09:49,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 920 transitions. [2023-08-27 02:09:49,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:49,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 920 transitions. [2023-08-27 02:09:49,684 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 02:09:49,686 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 02:09:49,686 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 02:09:49,686 INFO L175 Difference]: Start difference. First operand has 106 places, 51 transitions, 601 flow. Second operand 14 states and 920 transitions. [2023-08-27 02:09:49,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 818 flow [2023-08-27 02:09:49,689 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 02:09:49,690 INFO L231 Difference]: Finished difference. Result has 100 places, 47 transitions, 491 flow [2023-08-27 02:09:49,690 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 02:09:49,690 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2023-08-27 02:09:49,690 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 47 transitions, 491 flow [2023-08-27 02:09:49,690 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 02:09:49,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:49,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:49,697 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 02:09:49,894 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 02:09:49,895 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:49,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1539484513, now seen corresponding path program 7 times [2023-08-27 02:09:49,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:49,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302624798] [2023-08-27 02:09:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:49,974 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 02:09:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302624798] [2023-08-27 02:09:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302624798] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071084795] [2023-08-27 02:09:49,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 02:09:49,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:49,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:49,976 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 02:09:49,977 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 02:09:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:50,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:50,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:50,102 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 02:09:50,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:50,249 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 02:09:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071084795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:50,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:50,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 02:09:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299247409] [2023-08-27 02:09:50,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:09:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:09:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:09:50,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:50,252 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 02:09:50,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:50,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:50,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:50,447 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-27 02:09:50,447 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-27 02:09:50,448 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 02:09:50,448 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 23 selfloop transitions, 12 changer transitions 33/68 dead transitions. [2023-08-27 02:09:50,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 68 transitions, 786 flow [2023-08-27 02:09:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:09:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:09:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2023-08-27 02:09:50,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992643194955333 [2023-08-27 02:09:50,449 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 723 transitions. [2023-08-27 02:09:50,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 723 transitions. [2023-08-27 02:09:50,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:50,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 723 transitions. [2023-08-27 02:09:50,450 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 02:09:50,451 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 02:09:50,452 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 02:09:50,452 INFO L175 Difference]: Start difference. First operand has 100 places, 47 transitions, 491 flow. Second operand 11 states and 723 transitions. [2023-08-27 02:09:50,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 68 transitions, 786 flow [2023-08-27 02:09:50,454 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 02:09:50,454 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 275 flow [2023-08-27 02:09:50,454 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 02:09:50,455 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2023-08-27 02:09:50,455 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 275 flow [2023-08-27 02:09:50,455 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 02:09:50,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:50,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:50,459 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 02:09:50,659 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 02:09:50,659 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:50,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash -909548693, now seen corresponding path program 8 times [2023-08-27 02:09:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034053990] [2023-08-27 02:09:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:50,739 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 02:09:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034053990] [2023-08-27 02:09:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034053990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:09:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706523222] [2023-08-27 02:09:50,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:09:50,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:09:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:50,740 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 02:09:50,742 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 02:09:50,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:09:50,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:09:50,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:09:50,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:09:50,871 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 02:09:50,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:09:51,019 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 02:09:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706523222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:09:51,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:09:51,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 02:09:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497891679] [2023-08-27 02:09:51,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:09:51,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:09:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:09:51,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:09:51,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 02:09:51,022 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 02:09:51,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:51,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 02:09:51,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:51,233 INFO L124 PetriNetUnfolderBase]: 34/90 cut-off events. [2023-08-27 02:09:51,233 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2023-08-27 02:09:51,233 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 02:09:51,233 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-27 02:09:51,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 36 transitions, 355 flow [2023-08-27 02:09:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:09:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:09:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 584 transitions. [2023-08-27 02:09:51,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37508028259473347 [2023-08-27 02:09:51,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 584 transitions. [2023-08-27 02:09:51,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 584 transitions. [2023-08-27 02:09:51,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:51,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 584 transitions. [2023-08-27 02:09:51,239 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 02:09:51,240 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 02:09:51,240 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 02:09:51,240 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 275 flow. Second operand 9 states and 584 transitions. [2023-08-27 02:09:51,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 36 transitions, 355 flow [2023-08-27 02:09:51,241 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 02:09:51,242 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-08-27 02:09:51,242 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 02:09:51,242 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 44 predicate places. [2023-08-27 02:09:51,242 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-08-27 02:09:51,242 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 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:09:51,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:09:51,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:09:51,255 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 02:09:51,450 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 02:09:51,450 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:51,453 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:09:51,453 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:09:51,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:09:51 BasicIcfg [2023-08-27 02:09:51,455 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:09:51,456 INFO L158 Benchmark]: Toolchain (without parser) took 19704.26ms. Allocated memory was 369.1MB in the beginning and 578.8MB in the end (delta: 209.7MB). Free memory was 345.7MB in the beginning and 542.0MB in the end (delta: -196.3MB). Peak memory consumption was 342.0MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,456 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 369.1MB. Free memory is still 346.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:09:51,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.88ms. Allocated memory is still 369.1MB. Free memory was 345.7MB in the beginning and 334.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.69ms. Allocated memory is still 369.1MB. Free memory was 334.7MB in the beginning and 333.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,456 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 369.1MB. Free memory was 333.4MB in the beginning and 332.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,456 INFO L158 Benchmark]: RCFGBuilder took 332.45ms. Allocated memory is still 369.1MB. Free memory was 332.0MB in the beginning and 318.0MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,457 INFO L158 Benchmark]: TraceAbstraction took 19174.70ms. Allocated memory was 369.1MB in the beginning and 578.8MB in the end (delta: 209.7MB). Free memory was 317.3MB in the beginning and 542.0MB in the end (delta: -224.6MB). Peak memory consumption was 312.6MB. Max. memory is 16.0GB. [2023-08-27 02:09:51,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 369.1MB. Free memory is still 346.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 140.88ms. Allocated memory is still 369.1MB. Free memory was 345.7MB in the beginning and 334.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.69ms. Allocated memory is still 369.1MB. Free memory was 334.7MB in the beginning and 333.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 369.1MB. Free memory was 333.4MB in the beginning and 332.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 332.45ms. Allocated memory is still 369.1MB. Free memory was 332.0MB in the beginning and 318.0MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 19174.70ms. Allocated memory was 369.1MB in the beginning and 578.8MB in the end (delta: 209.7MB). Free memory was 317.3MB in the beginning and 542.0MB in the end (delta: -224.6MB). Peak memory consumption was 312.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 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: 19.0s, OverallIterations: 42, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1611 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1611 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s 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, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 251 SyntacticMatches, 26 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 3.6s 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, 0.4s SatisfiabilityAnalysisTime, 4.7s 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 02:09:51,470 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...