/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 14:50:39,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 14:50:39,620 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 14:50:39,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 14:50:39,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 14:50:39,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 14:50:39,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 14:50:39,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 14:50:39,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 14:50:39,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 14:50:39,661 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 14:50:39,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 14:50:39,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 14:50:39,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 14:50:39,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 14:50:39,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 14:50:39,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 14:50:39,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 14:50:39,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 14:50:39,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 14:50:39,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 14:50:39,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 14:50:39,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 14:50:39,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 14:50:39,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 14:50:39,666 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 14:50:39,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 14:50:39,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:50:39,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 14:50:39,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 14:50:39,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 14:50:39,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 14:50:39,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 14:50:39,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 14:50:39,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 14:50:39,669 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 14:50:40,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 14:50:40,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 14:50:40,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 14:50:40,037 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 14:50:40,038 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 14:50:40,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 14:50:41,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 14:50:41,352 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 14:50:41,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 14:50:41,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8cb04693/fba044c897ab4187a51c3a196c20b2b5/FLAG9ba598daf [2023-08-27 14:50:41,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8cb04693/fba044c897ab4187a51c3a196c20b2b5 [2023-08-27 14:50:41,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 14:50:41,375 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 14:50:41,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 14:50:41,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 14:50:41,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 14:50:41,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dc7492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41, skipping insertion in model container [2023-08-27 14:50:41,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,396 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 14:50:41,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:50:41,548 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 14:50:41,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:50:41,586 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:50:41,586 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:50:41,592 INFO L206 MainTranslator]: Completed translation [2023-08-27 14:50:41,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41 WrapperNode [2023-08-27 14:50:41,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 14:50:41,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 14:50:41,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 14:50:41,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 14:50:41,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,636 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-08-27 14:50:41,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 14:50:41,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 14:50:41,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 14:50:41,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 14:50:41,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 14:50:41,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 14:50:41,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 14:50:41,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 14:50:41,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (1/1) ... [2023-08-27 14:50:41,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:50:41,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:41,701 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 14:50:41,712 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 14:50:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 14:50:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 14:50:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 14:50:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 14:50:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 14:50:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 14:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 14:50:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 14:50:41,737 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 14:50:41,810 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 14:50:41,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 14:50:42,022 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 14:50:42,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 14:50:42,138 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 14:50:42,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:50:42 BoogieIcfgContainer [2023-08-27 14:50:42,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 14:50:42,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 14:50:42,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 14:50:42,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 14:50:42,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:50:41" (1/3) ... [2023-08-27 14:50:42,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e1026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:50:42, skipping insertion in model container [2023-08-27 14:50:42,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:50:41" (2/3) ... [2023-08-27 14:50:42,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e1026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:50:42, skipping insertion in model container [2023-08-27 14:50:42,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:50:42" (3/3) ... [2023-08-27 14:50:42,154 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 14:50:42,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 14:50:42,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 14:50:42,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 14:50:42,237 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 14:50:42,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 210 flow [2023-08-27 14:50:42,332 INFO L124 PetriNetUnfolderBase]: 6/95 cut-off events. [2023-08-27 14:50:42,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 14:50:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 6/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-08-27 14:50:42,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 97 transitions, 210 flow [2023-08-27 14:50:42,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 86 transitions, 184 flow [2023-08-27 14:50:42,349 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 14:50:42,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 184 flow [2023-08-27 14:50:42,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 184 flow [2023-08-27 14:50:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 184 flow [2023-08-27 14:50:42,410 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-08-27 14:50:42,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 14:50:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-08-27 14:50:42,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 812 [2023-08-27 14:50:44,994 INFO L134 LiptonReduction]: Checked pairs total: 975 [2023-08-27 14:50:44,994 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 14:50:45,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 14:50:45,010 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;@27edee3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 14:50:45,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 14:50:45,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 14:50:45,013 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-08-27 14:50:45,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 14:50:45,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:45,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 14:50:45,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:45,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 12474592, now seen corresponding path program 1 times [2023-08-27 14:50:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790910507] [2023-08-27 14:50:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:45,196 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 14:50:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790910507] [2023-08-27 14:50:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790910507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:45,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:50:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:50:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526893956] [2023-08-27 14:50:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:45,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:50:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:50:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:50:45,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 14:50:45,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:45,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 14:50:45,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:45,364 INFO L124 PetriNetUnfolderBase]: 231/359 cut-off events. [2023-08-27 14:50:45,364 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 14:50:45,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 359 events. 231/359 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 1344 event pairs, 39 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 619. Up to 310 conditions per place. [2023-08-27 14:50:45,370 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 33 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-27 14:50:45,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 173 flow [2023-08-27 14:50:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:50:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:50:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-27 14:50:45,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205992509363296 [2023-08-27 14:50:45,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-27 14:50:45,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-27 14:50:45,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:45,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-27 14:50:45,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,394 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 278 transitions. [2023-08-27 14:50:45,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 173 flow [2023-08-27 14:50:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 14:50:45,398 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 86 flow [2023-08-27 14:50:45,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-27 14:50:45,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-27 14:50:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 86 flow [2023-08-27 14:50:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:45,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 14:50:45,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 14:50:45,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:45,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash 386714362, now seen corresponding path program 1 times [2023-08-27 14:50:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878393753] [2023-08-27 14:50:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:45,483 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 14:50:45,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:45,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878393753] [2023-08-27 14:50:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878393753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:45,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862653417] [2023-08-27 14:50:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:45,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:45,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:45,487 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 14:50:45,518 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 14:50:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:45,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:45,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:45,589 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 14:50:45,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:45,606 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 14:50:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862653417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:45,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 14:50:45,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937009524] [2023-08-27 14:50:45,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:50:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:45,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:50:45,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:50:45,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-27 14:50:45,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:45,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-27 14:50:45,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:45,816 INFO L124 PetriNetUnfolderBase]: 551/812 cut-off events. [2023-08-27 14:50:45,816 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 14:50:45,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 812 events. 551/812 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 3601 event pairs, 81 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 598. Up to 428 conditions per place. [2023-08-27 14:50:45,822 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 64 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2023-08-27 14:50:45,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 78 transitions, 389 flow [2023-08-27 14:50:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:50:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:50:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 14:50:45,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48154093097913325 [2023-08-27 14:50:45,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 14:50:45,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 14:50:45,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:45,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 14:50:45,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,837 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 86 flow. Second operand 7 states and 600 transitions. [2023-08-27 14:50:45,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 78 transitions, 389 flow [2023-08-27 14:50:45,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 78 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:45,839 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 154 flow [2023-08-27 14:50:45,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-27 14:50:45,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-27 14:50:45,840 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 154 flow [2023-08-27 14:50:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:45,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:45,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 14:50:45,851 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 14:50:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:46,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:46,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -896756236, now seen corresponding path program 1 times [2023-08-27 14:50:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077710805] [2023-08-27 14:50:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077710805] [2023-08-27 14:50:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077710805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704854015] [2023-08-27 14:50:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:46,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:46,130 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 14:50:46,137 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 14:50:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:46,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 14:50:46,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:46,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:50:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704854015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:46,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:50:46,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 14:50:46,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097125203] [2023-08-27 14:50:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:46,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 14:50:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 14:50:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:50:46,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-27 14:50:46,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:46,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-27 14:50:46,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:46,321 INFO L124 PetriNetUnfolderBase]: 492/739 cut-off events. [2023-08-27 14:50:46,321 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 14:50:46,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 739 events. 492/739 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3349 event pairs, 38 based on Foata normal form. 28/516 useless extension candidates. Maximal degree in co-relation 1093. Up to 434 conditions per place. [2023-08-27 14:50:46,326 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 45 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-27 14:50:46,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 298 flow [2023-08-27 14:50:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:50:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:50:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-27 14:50:46,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730337078651685 [2023-08-27 14:50:46,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-27 14:50:46,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-27 14:50:46,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:46,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-27 14:50:46,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,332 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 154 flow. Second operand 5 states and 421 transitions. [2023-08-27 14:50:46,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 298 flow [2023-08-27 14:50:46,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 294 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:46,336 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 139 flow [2023-08-27 14:50:46,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-27 14:50:46,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2023-08-27 14:50:46,337 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 139 flow [2023-08-27 14:50:46,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:46,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 14:50:46,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 14:50:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 14:50:46,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:46,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 386714311, now seen corresponding path program 1 times [2023-08-27 14:50:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:46,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512348887] [2023-08-27 14:50:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:46,587 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 14:50:46,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:46,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512348887] [2023-08-27 14:50:46,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512348887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348196638] [2023-08-27 14:50:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:46,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:46,591 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 14:50:46,629 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 14:50:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:46,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:46,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:46,695 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 14:50:46,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:46,717 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 14:50:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348196638] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:46,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 14:50:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424836523] [2023-08-27 14:50:46,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:46,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:50:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:50:46,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:50:46,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 14:50:46,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:46,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 14:50:46,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:46,927 INFO L124 PetriNetUnfolderBase]: 689/1076 cut-off events. [2023-08-27 14:50:46,927 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2023-08-27 14:50:46,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1076 events. 689/1076 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4823 event pairs, 41 based on Foata normal form. 46/890 useless extension candidates. Maximal degree in co-relation 1226. Up to 468 conditions per place. [2023-08-27 14:50:46,935 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 93 selfloop transitions, 34 changer transitions 0/129 dead transitions. [2023-08-27 14:50:46,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 129 transitions, 803 flow [2023-08-27 14:50:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:50:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:50:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2023-08-27 14:50:46,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528892455858748 [2023-08-27 14:50:46,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2023-08-27 14:50:46,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2023-08-27 14:50:46,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:46,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2023-08-27 14:50:46,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,953 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 139 flow. Second operand 7 states and 659 transitions. [2023-08-27 14:50:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 129 transitions, 803 flow [2023-08-27 14:50:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 129 transitions, 773 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 14:50:46,959 INFO L231 Difference]: Finished difference. Result has 45 places, 60 transitions, 484 flow [2023-08-27 14:50:46,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=45, PETRI_TRANSITIONS=60} [2023-08-27 14:50:46,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-08-27 14:50:46,961 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 60 transitions, 484 flow [2023-08-27 14:50:46,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:46,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:46,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 14:50:46,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 14:50:47,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:47,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:47,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash 386714310, now seen corresponding path program 1 times [2023-08-27 14:50:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:47,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855721817] [2023-08-27 14:50:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:47,247 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 14:50:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855721817] [2023-08-27 14:50:47,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855721817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571047926] [2023-08-27 14:50:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:47,253 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 14:50:47,276 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 14:50:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:47,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:47,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:47,322 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 14:50:47,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:50:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571047926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:47,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:50:47,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 14:50:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129446585] [2023-08-27 14:50:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:47,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:50:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:50:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 14:50:47,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 14:50:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 60 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 14:50:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:47,484 INFO L124 PetriNetUnfolderBase]: 705/1137 cut-off events. [2023-08-27 14:50:47,484 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-27 14:50:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4810 conditions, 1137 events. 705/1137 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5309 event pairs, 86 based on Foata normal form. 136/1163 useless extension candidates. Maximal degree in co-relation 2511. Up to 595 conditions per place. [2023-08-27 14:50:47,494 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 49 selfloop transitions, 29 changer transitions 0/80 dead transitions. [2023-08-27 14:50:47,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 80 transitions, 767 flow [2023-08-27 14:50:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:50:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:50:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-27 14:50:47,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943820224719101 [2023-08-27 14:50:47,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-27 14:50:47,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-27 14:50:47,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:47,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-27 14:50:47,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,500 INFO L175 Difference]: Start difference. First operand has 45 places, 60 transitions, 484 flow. Second operand 4 states and 352 transitions. [2023-08-27 14:50:47,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 80 transitions, 767 flow [2023-08-27 14:50:47,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 685 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-08-27 14:50:47,511 INFO L231 Difference]: Finished difference. Result has 49 places, 66 transitions, 621 flow [2023-08-27 14:50:47,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=49, PETRI_TRANSITIONS=66} [2023-08-27 14:50:47,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-08-27 14:50:47,513 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 66 transitions, 621 flow [2023-08-27 14:50:47,513 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 14:50:47,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:47,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:47,524 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 14:50:47,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:47,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:47,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 202576956, now seen corresponding path program 1 times [2023-08-27 14:50:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338199829] [2023-08-27 14:50:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:47,765 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 14:50:47,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338199829] [2023-08-27 14:50:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338199829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:47,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:50:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:50:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12041665] [2023-08-27 14:50:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:47,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:50:47,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:50:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:50:47,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 178 [2023-08-27 14:50:47,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 66 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:47,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 178 [2023-08-27 14:50:47,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:47,939 INFO L124 PetriNetUnfolderBase]: 729/1261 cut-off events. [2023-08-27 14:50:47,939 INFO L125 PetriNetUnfolderBase]: For 4034/4034 co-relation queries the response was YES. [2023-08-27 14:50:47,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 1261 events. 729/1261 cut-off events. For 4034/4034 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6393 event pairs, 283 based on Foata normal form. 22/1179 useless extension candidates. Maximal degree in co-relation 2755. Up to 1057 conditions per place. [2023-08-27 14:50:47,971 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 85 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-27 14:50:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 91 transitions, 970 flow [2023-08-27 14:50:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:50:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:50:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-27 14:50:47,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50187265917603 [2023-08-27 14:50:47,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-27 14:50:47,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-27 14:50:47,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:47,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-27 14:50:47,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,976 INFO L175 Difference]: Start difference. First operand has 49 places, 66 transitions, 621 flow. Second operand 3 states and 268 transitions. [2023-08-27 14:50:47,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 91 transitions, 970 flow [2023-08-27 14:50:47,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 897 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:47,990 INFO L231 Difference]: Finished difference. Result has 51 places, 70 transitions, 637 flow [2023-08-27 14:50:47,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=637, PETRI_PLACES=51, PETRI_TRANSITIONS=70} [2023-08-27 14:50:47,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-08-27 14:50:47,992 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 70 transitions, 637 flow [2023-08-27 14:50:47,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:47,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:47,994 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 14:50:47,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 14:50:47,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:47,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1505696467, now seen corresponding path program 2 times [2023-08-27 14:50:47,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800487772] [2023-08-27 14:50:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:47,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800487772] [2023-08-27 14:50:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800487772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389356941] [2023-08-27 14:50:48,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:50:48,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:48,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:48,078 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 14:50:48,102 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 14:50:48,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:50:48,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:50:48,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:48,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 14:50:48,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:50:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389356941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:48,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:50:48,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 14:50:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698013799] [2023-08-27 14:50:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:50:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:50:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 14:50:48,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-27 14:50:48,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 70 transitions, 637 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:48,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-27 14:50:48,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:48,261 INFO L124 PetriNetUnfolderBase]: 587/1022 cut-off events. [2023-08-27 14:50:48,264 INFO L125 PetriNetUnfolderBase]: For 2948/2985 co-relation queries the response was YES. [2023-08-27 14:50:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 1022 events. 587/1022 cut-off events. For 2948/2985 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5114 event pairs, 291 based on Foata normal form. 98/1009 useless extension candidates. Maximal degree in co-relation 2852. Up to 1018 conditions per place. [2023-08-27 14:50:48,272 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-27 14:50:48,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 660 flow [2023-08-27 14:50:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:50:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:50:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 14:50:48,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307116104868914 [2023-08-27 14:50:48,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 14:50:48,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 14:50:48,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:48,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 14:50:48,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,276 INFO L175 Difference]: Start difference. First operand has 51 places, 70 transitions, 637 flow. Second operand 3 states and 230 transitions. [2023-08-27 14:50:48,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 660 flow [2023-08-27 14:50:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 14:50:48,290 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 511 flow [2023-08-27 14:50:48,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-08-27 14:50:48,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-08-27 14:50:48,292 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 511 flow [2023-08-27 14:50:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:48,293 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 14:50:48,301 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 14:50:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:48,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:48,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1505696416, now seen corresponding path program 2 times [2023-08-27 14:50:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309357801] [2023-08-27 14:50:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309357801] [2023-08-27 14:50:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309357801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574777524] [2023-08-27 14:50:48,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:50:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:48,557 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 14:50:48,560 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 14:50:48,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:50:48,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:50:48,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 14:50:48,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:48,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574777524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:48,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 14:50:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737195223] [2023-08-27 14:50:48,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 14:50:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 14:50:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 14:50:48,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 14:50:48,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 511 flow. Second operand has 13 states, 13 states have (on average 79.3076923076923) internal successors, (1031), 13 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:48,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:48,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 14:50:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:49,123 INFO L124 PetriNetUnfolderBase]: 1441/2619 cut-off events. [2023-08-27 14:50:49,123 INFO L125 PetriNetUnfolderBase]: For 8197/8269 co-relation queries the response was YES. [2023-08-27 14:50:49,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 2619 events. 1441/2619 cut-off events. For 8197/8269 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15950 event pairs, 117 based on Foata normal form. 398/2665 useless extension candidates. Maximal degree in co-relation 10036. Up to 759 conditions per place. [2023-08-27 14:50:49,143 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 167 selfloop transitions, 114 changer transitions 0/283 dead transitions. [2023-08-27 14:50:49,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 283 transitions, 2371 flow [2023-08-27 14:50:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 14:50:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 14:50:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1215 transitions. [2023-08-27 14:50:49,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250648228176318 [2023-08-27 14:50:49,147 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1215 transitions. [2023-08-27 14:50:49,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1215 transitions. [2023-08-27 14:50:49,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:49,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1215 transitions. [2023-08-27 14:50:49,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.46153846153847) internal successors, (1215), 13 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,153 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,153 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 511 flow. Second operand 13 states and 1215 transitions. [2023-08-27 14:50:49,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 283 transitions, 2371 flow [2023-08-27 14:50:49,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 283 transitions, 2370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:49,178 INFO L231 Difference]: Finished difference. Result has 70 places, 155 transitions, 2022 flow [2023-08-27 14:50:49,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2022, PETRI_PLACES=70, PETRI_TRANSITIONS=155} [2023-08-27 14:50:49,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 14:50:49,180 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 155 transitions, 2022 flow [2023-08-27 14:50:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.3076923076923) internal successors, (1031), 13 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:49,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:49,190 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 14:50:49,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:49,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:49,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1999381908, now seen corresponding path program 1 times [2023-08-27 14:50:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:49,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368456830] [2023-08-27 14:50:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:49,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:49,492 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 14:50:49,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:49,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368456830] [2023-08-27 14:50:49,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368456830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:49,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974962560] [2023-08-27 14:50:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:49,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:49,494 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 14:50:49,496 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 14:50:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:49,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:49,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:50:49,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:50:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974962560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:49,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:50:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 14:50:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658249070] [2023-08-27 14:50:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:50:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:50:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:50:49,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-27 14:50:49,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 155 transitions, 2022 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:49,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-27 14:50:49,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:49,872 INFO L124 PetriNetUnfolderBase]: 1168/2149 cut-off events. [2023-08-27 14:50:49,872 INFO L125 PetriNetUnfolderBase]: For 10761/10834 co-relation queries the response was YES. [2023-08-27 14:50:49,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 2149 events. 1168/2149 cut-off events. For 10761/10834 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12676 event pairs, 668 based on Foata normal form. 68/2052 useless extension candidates. Maximal degree in co-relation 9758. Up to 2145 conditions per place. [2023-08-27 14:50:49,902 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 130 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-08-27 14:50:49,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 1972 flow [2023-08-27 14:50:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:50:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:50:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-27 14:50:49,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288389513108614 [2023-08-27 14:50:49,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-27 14:50:49,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-27 14:50:49,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:49,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-27 14:50:49,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,906 INFO L175 Difference]: Start difference. First operand has 70 places, 155 transitions, 2022 flow. Second operand 3 states and 229 transitions. [2023-08-27 14:50:49,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 1972 flow [2023-08-27 14:50:49,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 1789 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:49,957 INFO L231 Difference]: Finished difference. Result has 70 places, 133 transitions, 1529 flow [2023-08-27 14:50:49,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1529, PETRI_PLACES=70, PETRI_TRANSITIONS=133} [2023-08-27 14:50:49,958 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 14:50:49,958 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 133 transitions, 1529 flow [2023-08-27 14:50:49,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:49,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:49,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:49,967 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 14:50:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:50,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:50,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1999381907, now seen corresponding path program 1 times [2023-08-27 14:50:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:50,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503793371] [2023-08-27 14:50:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:50,219 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 14:50:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503793371] [2023-08-27 14:50:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503793371] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385962096] [2023-08-27 14:50:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:50,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:50,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:50,221 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 14:50:50,230 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 14:50:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:50,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 14:50:50,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:50,310 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 14:50:50,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:50,388 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 14:50:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385962096] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:50,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 14:50:50,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-08-27 14:50:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123389544] [2023-08-27 14:50:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:50:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:50:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-27 14:50:50,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 178 [2023-08-27 14:50:50,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 133 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:50,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 178 [2023-08-27 14:50:50,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:50,616 INFO L124 PetriNetUnfolderBase]: 987/1837 cut-off events. [2023-08-27 14:50:50,617 INFO L125 PetriNetUnfolderBase]: For 7422/7422 co-relation queries the response was YES. [2023-08-27 14:50:50,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1837 events. 987/1837 cut-off events. For 7422/7422 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10397 event pairs, 177 based on Foata normal form. 94/1851 useless extension candidates. Maximal degree in co-relation 7224. Up to 1650 conditions per place. [2023-08-27 14:50:50,630 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 122 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2023-08-27 14:50:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 127 transitions, 1577 flow [2023-08-27 14:50:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:50:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:50:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-27 14:50:50,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46207865168539325 [2023-08-27 14:50:50,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-27 14:50:50,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-27 14:50:50,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:50,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-27 14:50:50,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,635 INFO L175 Difference]: Start difference. First operand has 70 places, 133 transitions, 1529 flow. Second operand 4 states and 329 transitions. [2023-08-27 14:50:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 127 transitions, 1577 flow [2023-08-27 14:50:50,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 127 transitions, 1558 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 14:50:50,656 INFO L231 Difference]: Finished difference. Result has 70 places, 106 transitions, 1183 flow [2023-08-27 14:50:50,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1183, PETRI_PLACES=70, PETRI_TRANSITIONS=106} [2023-08-27 14:50:50,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 14:50:50,658 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 106 transitions, 1183 flow [2023-08-27 14:50:50,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:50,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:50,669 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 14:50:50,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 14:50:50,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:50,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1192331566, now seen corresponding path program 1 times [2023-08-27 14:50:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828615440] [2023-08-27 14:50:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:50,950 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 14:50:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828615440] [2023-08-27 14:50:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828615440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:50:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:50:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822299830] [2023-08-27 14:50:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:50,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:50:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:50:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:50:50,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 178 [2023-08-27 14:50:50,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 106 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:50,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:50,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 178 [2023-08-27 14:50:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:51,127 INFO L124 PetriNetUnfolderBase]: 898/1645 cut-off events. [2023-08-27 14:50:51,127 INFO L125 PetriNetUnfolderBase]: For 7882/7952 co-relation queries the response was YES. [2023-08-27 14:50:51,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1645 events. 898/1645 cut-off events. For 7882/7952 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9110 event pairs, 545 based on Foata normal form. 60/1656 useless extension candidates. Maximal degree in co-relation 6672. Up to 1638 conditions per place. [2023-08-27 14:50:51,140 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 101 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2023-08-27 14:50:51,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 1385 flow [2023-08-27 14:50:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:50:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:50:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-27 14:50:51,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40262172284644193 [2023-08-27 14:50:51,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-27 14:50:51,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-27 14:50:51,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:51,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-27 14:50:51,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,144 INFO L175 Difference]: Start difference. First operand has 70 places, 106 transitions, 1183 flow. Second operand 3 states and 215 transitions. [2023-08-27 14:50:51,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 1385 flow [2023-08-27 14:50:51,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 1385 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 14:50:51,165 INFO L231 Difference]: Finished difference. Result has 71 places, 105 transitions, 1183 flow [2023-08-27 14:50:51,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=71, PETRI_TRANSITIONS=105} [2023-08-27 14:50:51,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-08-27 14:50:51,166 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 105 transitions, 1183 flow [2023-08-27 14:50:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:51,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 14:50:51,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:51,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash 388104659, now seen corresponding path program 1 times [2023-08-27 14:50:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:51,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333860347] [2023-08-27 14:50:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:51,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:51,256 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 14:50:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333860347] [2023-08-27 14:50:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333860347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:50:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 14:50:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087681312] [2023-08-27 14:50:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:50:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:50:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:50:51,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 178 [2023-08-27 14:50:51,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 105 transitions, 1183 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:51,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 178 [2023-08-27 14:50:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:51,440 INFO L124 PetriNetUnfolderBase]: 890/1621 cut-off events. [2023-08-27 14:50:51,440 INFO L125 PetriNetUnfolderBase]: For 7783/7852 co-relation queries the response was YES. [2023-08-27 14:50:51,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1621 events. 890/1621 cut-off events. For 7783/7852 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8843 event pairs, 403 based on Foata normal form. 69/1645 useless extension candidates. Maximal degree in co-relation 6612. Up to 1592 conditions per place. [2023-08-27 14:50:51,452 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 105 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-27 14:50:51,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 1420 flow [2023-08-27 14:50:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:50:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:50:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-08-27 14:50:51,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38202247191011235 [2023-08-27 14:50:51,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-08-27 14:50:51,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-08-27 14:50:51,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:51,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-08-27 14:50:51,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,456 INFO L175 Difference]: Start difference. First operand has 71 places, 105 transitions, 1183 flow. Second operand 4 states and 272 transitions. [2023-08-27 14:50:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 1420 flow [2023-08-27 14:50:51,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 1419 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:50:51,476 INFO L231 Difference]: Finished difference. Result has 73 places, 104 transitions, 1184 flow [2023-08-27 14:50:51,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1184, PETRI_PLACES=73, PETRI_TRANSITIONS=104} [2023-08-27 14:50:51,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2023-08-27 14:50:51,478 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 104 transitions, 1184 flow [2023-08-27 14:50:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:51,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:51,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 14:50:51,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:51,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 954169268, now seen corresponding path program 1 times [2023-08-27 14:50:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:51,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018915279] [2023-08-27 14:50:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:50:51,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018915279] [2023-08-27 14:50:51,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018915279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:50:51,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:50:51,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 14:50:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11172876] [2023-08-27 14:50:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:50:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:50:51,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:50:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:50:51,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 178 [2023-08-27 14:50:51,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 104 transitions, 1184 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:51,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 178 [2023-08-27 14:50:51,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:51,755 INFO L124 PetriNetUnfolderBase]: 874/1562 cut-off events. [2023-08-27 14:50:51,755 INFO L125 PetriNetUnfolderBase]: For 7031/7031 co-relation queries the response was YES. [2023-08-27 14:50:51,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1562 events. 874/1562 cut-off events. For 7031/7031 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8054 event pairs, 435 based on Foata normal form. 64/1597 useless extension candidates. Maximal degree in co-relation 6643. Up to 1390 conditions per place. [2023-08-27 14:50:51,765 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 109 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2023-08-27 14:50:51,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 1623 flow [2023-08-27 14:50:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:50:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:50:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-27 14:50:51,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241573033707865 [2023-08-27 14:50:51,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-27 14:50:51,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-27 14:50:51,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:51,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-27 14:50:51,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,769 INFO L175 Difference]: Start difference. First operand has 73 places, 104 transitions, 1184 flow. Second operand 4 states and 302 transitions. [2023-08-27 14:50:51,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 1623 flow [2023-08-27 14:50:51,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 1615 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 14:50:51,786 INFO L231 Difference]: Finished difference. Result has 74 places, 104 transitions, 1221 flow [2023-08-27 14:50:51,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1221, PETRI_PLACES=74, PETRI_TRANSITIONS=104} [2023-08-27 14:50:51,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-08-27 14:50:51,787 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 104 transitions, 1221 flow [2023-08-27 14:50:51,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:51,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:51,787 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 14:50:51,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 14:50:51,788 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:51,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1094952640, now seen corresponding path program 3 times [2023-08-27 14:50:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:51,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757192027] [2023-08-27 14:50:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757192027] [2023-08-27 14:50:51,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757192027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947029368] [2023-08-27 14:50:51,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 14:50:51,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:51,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:51,921 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 14:50:51,943 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 14:50:51,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 14:50:51,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:50:51,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 14:50:51,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:52,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:52,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947029368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:52,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:52,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-27 14:50:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495615258] [2023-08-27 14:50:52,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:50:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:50:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:50:52,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 14:50:52,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 104 transitions, 1221 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:52,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:52,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 14:50:52,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:53,050 INFO L124 PetriNetUnfolderBase]: 2230/4192 cut-off events. [2023-08-27 14:50:53,050 INFO L125 PetriNetUnfolderBase]: For 61052/61316 co-relation queries the response was YES. [2023-08-27 14:50:53,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 4192 events. 2230/4192 cut-off events. For 61052/61316 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 25974 event pairs, 196 based on Foata normal form. 818/4900 useless extension candidates. Maximal degree in co-relation 17076. Up to 1149 conditions per place. [2023-08-27 14:50:53,081 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 261 selfloop transitions, 242 changer transitions 0/506 dead transitions. [2023-08-27 14:50:53,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 506 transitions, 4843 flow [2023-08-27 14:50:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 14:50:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 14:50:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2278 transitions. [2023-08-27 14:50:53,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119101123595505 [2023-08-27 14:50:53,087 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2278 transitions. [2023-08-27 14:50:53,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2278 transitions. [2023-08-27 14:50:53,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:53,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2278 transitions. [2023-08-27 14:50:53,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 91.12) internal successors, (2278), 25 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:53,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 178.0) internal successors, (4628), 26 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:53,099 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 178.0) internal successors, (4628), 26 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:53,099 INFO L175 Difference]: Start difference. First operand has 74 places, 104 transitions, 1221 flow. Second operand 25 states and 2278 transitions. [2023-08-27 14:50:53,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 506 transitions, 4843 flow [2023-08-27 14:50:53,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 506 transitions, 4791 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 14:50:53,137 INFO L231 Difference]: Finished difference. Result has 117 places, 278 transitions, 4262 flow [2023-08-27 14:50:53,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4262, PETRI_PLACES=117, PETRI_TRANSITIONS=278} [2023-08-27 14:50:53,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2023-08-27 14:50:53,138 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 278 transitions, 4262 flow [2023-08-27 14:50:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:53,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:53,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:53,147 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 14:50:53,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 14:50:53,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:53,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1960209704, now seen corresponding path program 1 times [2023-08-27 14:50:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:53,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992032822] [2023-08-27 14:50:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:50:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992032822] [2023-08-27 14:50:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992032822] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585653612] [2023-08-27 14:50:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:53,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:53,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:53,394 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 14:50:53,401 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 14:50:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:53,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:50:53,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:50:53,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:50:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585653612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:53,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 14:50:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756828785] [2023-08-27 14:50:53,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 14:50:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 14:50:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:50:53,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 178 [2023-08-27 14:50:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 278 transitions, 4262 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:53,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 178 [2023-08-27 14:50:53,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:54,402 INFO L124 PetriNetUnfolderBase]: 2570/4801 cut-off events. [2023-08-27 14:50:54,402 INFO L125 PetriNetUnfolderBase]: For 45443/45443 co-relation queries the response was YES. [2023-08-27 14:50:54,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24102 conditions, 4801 events. 2570/4801 cut-off events. For 45443/45443 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29890 event pairs, 773 based on Foata normal form. 136/4828 useless extension candidates. Maximal degree in co-relation 24046. Up to 4531 conditions per place. [2023-08-27 14:50:54,451 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 312 selfloop transitions, 30 changer transitions 0/343 dead transitions. [2023-08-27 14:50:54,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 343 transitions, 5899 flow [2023-08-27 14:50:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 14:50:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 14:50:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-08-27 14:50:54,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42134831460674155 [2023-08-27 14:50:54,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-08-27 14:50:54,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-08-27 14:50:54,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:54,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-08-27 14:50:54,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:54,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:54,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:54,456 INFO L175 Difference]: Start difference. First operand has 117 places, 278 transitions, 4262 flow. Second operand 6 states and 450 transitions. [2023-08-27 14:50:54,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 343 transitions, 5899 flow [2023-08-27 14:50:54,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 343 transitions, 5474 flow, removed 204 selfloop flow, removed 2 redundant places. [2023-08-27 14:50:54,578 INFO L231 Difference]: Finished difference. Result has 123 places, 303 transitions, 4484 flow [2023-08-27 14:50:54,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=3945, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4484, PETRI_PLACES=123, PETRI_TRANSITIONS=303} [2023-08-27 14:50:54,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2023-08-27 14:50:54,579 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 303 transitions, 4484 flow [2023-08-27 14:50:54,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:54,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:54,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:54,591 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 14:50:54,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 14:50:54,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:54,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 648048334, now seen corresponding path program 2 times [2023-08-27 14:50:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534818531] [2023-08-27 14:50:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:54,950 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 14:50:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534818531] [2023-08-27 14:50:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534818531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922421839] [2023-08-27 14:50:54,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:50:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:54,951 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 14:50:54,969 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 14:50:55,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:50:55,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:50:55,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 14:50:55,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:55,249 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 14:50:55,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:55,889 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 14:50:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922421839] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:55,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 14:50:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198744324] [2023-08-27 14:50:55,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:50:55,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:50:55,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:50:55,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:50:55,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 303 transitions, 4484 flow. Second operand has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:55,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:55,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:50:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:50:57,472 INFO L124 PetriNetUnfolderBase]: 2663/4985 cut-off events. [2023-08-27 14:50:57,472 INFO L125 PetriNetUnfolderBase]: For 51326/51326 co-relation queries the response was YES. [2023-08-27 14:50:57,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25875 conditions, 4985 events. 2663/4985 cut-off events. For 51326/51326 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 31133 event pairs, 900 based on Foata normal form. 2/4876 useless extension candidates. Maximal degree in co-relation 25816. Up to 4735 conditions per place. [2023-08-27 14:50:57,522 INFO L140 encePairwiseOnDemand]: 166/178 looper letters, 332 selfloop transitions, 40 changer transitions 20/392 dead transitions. [2023-08-27 14:50:57,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 392 transitions, 6125 flow [2023-08-27 14:50:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 14:50:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 14:50:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1186 transitions. [2023-08-27 14:50:57,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701622971285893 [2023-08-27 14:50:57,528 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1186 transitions. [2023-08-27 14:50:57,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1186 transitions. [2023-08-27 14:50:57,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:50:57,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1186 transitions. [2023-08-27 14:50:57,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.88888888888889) internal successors, (1186), 18 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:57,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:57,537 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:57,537 INFO L175 Difference]: Start difference. First operand has 123 places, 303 transitions, 4484 flow. Second operand 18 states and 1186 transitions. [2023-08-27 14:50:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 392 transitions, 6125 flow [2023-08-27 14:50:57,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 392 transitions, 6117 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 14:50:57,654 INFO L231 Difference]: Finished difference. Result has 151 places, 331 transitions, 5221 flow [2023-08-27 14:50:57,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5221, PETRI_PLACES=151, PETRI_TRANSITIONS=331} [2023-08-27 14:50:57,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2023-08-27 14:50:57,654 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 331 transitions, 5221 flow [2023-08-27 14:50:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:50:57,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:50:57,659 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 14:50:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 14:50:57,855 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:50:57,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:50:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash 571032444, now seen corresponding path program 3 times [2023-08-27 14:50:57,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:50:57,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510512109] [2023-08-27 14:50:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:50:57,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:50:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:50:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:50:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510512109] [2023-08-27 14:50:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510512109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:50:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974796737] [2023-08-27 14:50:58,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 14:50:58,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:50:58,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:50:58,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:50:58,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 14:50:58,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 14:50:58,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:50:58,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 14:50:58,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:50:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:50:58,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:50:58,784 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 14:50:58,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974796737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:50:58,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:50:58,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 14:50:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795988809] [2023-08-27 14:50:58,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:50:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:50:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:50:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:50:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:50:58,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:50:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 331 transitions, 5221 flow. Second operand has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:50:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:50:58,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:50:58,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:00,480 INFO L124 PetriNetUnfolderBase]: 2708/5088 cut-off events. [2023-08-27 14:51:00,480 INFO L125 PetriNetUnfolderBase]: For 62229/62229 co-relation queries the response was YES. [2023-08-27 14:51:00,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29471 conditions, 5088 events. 2708/5088 cut-off events. For 62229/62229 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 32135 event pairs, 897 based on Foata normal form. 4/5092 useless extension candidates. Maximal degree in co-relation 29399. Up to 4690 conditions per place. [2023-08-27 14:51:00,532 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 346 selfloop transitions, 54 changer transitions 30/430 dead transitions. [2023-08-27 14:51:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 430 transitions, 6828 flow [2023-08-27 14:51:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 14:51:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 14:51:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1332 transitions. [2023-08-27 14:51:00,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741573033707865 [2023-08-27 14:51:00,535 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1332 transitions. [2023-08-27 14:51:00,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1332 transitions. [2023-08-27 14:51:00,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:00,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1332 transitions. [2023-08-27 14:51:00,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 66.6) internal successors, (1332), 20 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:00,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 178.0) internal successors, (3738), 21 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:00,542 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 178.0) internal successors, (3738), 21 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:00,542 INFO L175 Difference]: Start difference. First operand has 151 places, 331 transitions, 5221 flow. Second operand 20 states and 1332 transitions. [2023-08-27 14:51:00,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 430 transitions, 6828 flow [2023-08-27 14:51:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 430 transitions, 6732 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-27 14:51:00,781 INFO L231 Difference]: Finished difference. Result has 173 places, 347 transitions, 5663 flow [2023-08-27 14:51:00,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5663, PETRI_PLACES=173, PETRI_TRANSITIONS=347} [2023-08-27 14:51:00,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2023-08-27 14:51:00,782 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 347 transitions, 5663 flow [2023-08-27 14:51:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:00,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:00,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:00,791 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 14:51:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 14:51:00,991 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:00,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1008252341, now seen corresponding path program 1 times [2023-08-27 14:51:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915016639] [2023-08-27 14:51:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915016639] [2023-08-27 14:51:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915016639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684218518] [2023-08-27 14:51:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:01,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:01,049 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 14:51:01,073 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 14:51:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:01,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:51:01,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:01,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:51:01,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684218518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:01,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:01,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-27 14:51:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230925715] [2023-08-27 14:51:01,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:01,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 14:51:01,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 14:51:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 14:51:01,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 178 [2023-08-27 14:51:01,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 347 transitions, 5663 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:01,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:01,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 178 [2023-08-27 14:51:01,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:02,044 INFO L124 PetriNetUnfolderBase]: 2646/4887 cut-off events. [2023-08-27 14:51:02,044 INFO L125 PetriNetUnfolderBase]: For 86428/86616 co-relation queries the response was YES. [2023-08-27 14:51:02,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30853 conditions, 4887 events. 2646/4887 cut-off events. For 86428/86616 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 31491 event pairs, 465 based on Foata normal form. 278/5141 useless extension candidates. Maximal degree in co-relation 30771. Up to 3035 conditions per place. [2023-08-27 14:51:02,078 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 483 selfloop transitions, 16 changer transitions 3/507 dead transitions. [2023-08-27 14:51:02,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 507 transitions, 9129 flow [2023-08-27 14:51:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:51:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:51:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-27 14:51:02,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3797752808988764 [2023-08-27 14:51:02,079 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-27 14:51:02,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-27 14:51:02,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:02,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-27 14:51:02,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:02,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:02,081 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:02,081 INFO L175 Difference]: Start difference. First operand has 173 places, 347 transitions, 5663 flow. Second operand 5 states and 338 transitions. [2023-08-27 14:51:02,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 507 transitions, 9129 flow [2023-08-27 14:51:02,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 507 transitions, 9067 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 14:51:02,278 INFO L231 Difference]: Finished difference. Result has 164 places, 344 transitions, 5612 flow [2023-08-27 14:51:02,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5612, PETRI_PLACES=164, PETRI_TRANSITIONS=344} [2023-08-27 14:51:02,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2023-08-27 14:51:02,279 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 344 transitions, 5612 flow [2023-08-27 14:51:02,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:02,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:02,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:02,285 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 14:51:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 14:51:02,484 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:02,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1958628602, now seen corresponding path program 4 times [2023-08-27 14:51:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484493964] [2023-08-27 14:51:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484493964] [2023-08-27 14:51:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484493964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157958067] [2023-08-27 14:51:02,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 14:51:02,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:02,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:02,675 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 14:51:02,676 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 14:51:02,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 14:51:02,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:02,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 14:51:02,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:02,846 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 14:51:02,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:03,067 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 14:51:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157958067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:03,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 14:51:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559276581] [2023-08-27 14:51:03,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 14:51:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 14:51:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-27 14:51:03,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:03,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 344 transitions, 5612 flow. Second operand has 20 states, 20 states have (on average 61.75) internal successors, (1235), 20 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:03,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:03,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:03,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:05,827 INFO L124 PetriNetUnfolderBase]: 3741/7147 cut-off events. [2023-08-27 14:51:05,827 INFO L125 PetriNetUnfolderBase]: For 96393/96393 co-relation queries the response was YES. [2023-08-27 14:51:05,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42037 conditions, 7147 events. 3741/7147 cut-off events. For 96393/96393 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 49337 event pairs, 397 based on Foata normal form. 44/7191 useless extension candidates. Maximal degree in co-relation 41957. Up to 3989 conditions per place. [2023-08-27 14:51:05,892 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 412 selfloop transitions, 362 changer transitions 23/797 dead transitions. [2023-08-27 14:51:05,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 797 transitions, 13561 flow [2023-08-27 14:51:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 14:51:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 14:51:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2541 transitions. [2023-08-27 14:51:05,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36603284356093346 [2023-08-27 14:51:05,897 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2541 transitions. [2023-08-27 14:51:05,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2541 transitions. [2023-08-27 14:51:05,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:05,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2541 transitions. [2023-08-27 14:51:05,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 65.15384615384616) internal successors, (2541), 39 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:05,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:05,911 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:05,912 INFO L175 Difference]: Start difference. First operand has 164 places, 344 transitions, 5612 flow. Second operand 39 states and 2541 transitions. [2023-08-27 14:51:05,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 797 transitions, 13561 flow [2023-08-27 14:51:06,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 797 transitions, 13371 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-08-27 14:51:06,142 INFO L231 Difference]: Finished difference. Result has 210 places, 616 transitions, 11751 flow [2023-08-27 14:51:06,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11751, PETRI_PLACES=210, PETRI_TRANSITIONS=616} [2023-08-27 14:51:06,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2023-08-27 14:51:06,143 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 616 transitions, 11751 flow [2023-08-27 14:51:06,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.75) internal successors, (1235), 20 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:06,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:06,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:06,154 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 14:51:06,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:06,349 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:06,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1720245634, now seen corresponding path program 5 times [2023-08-27 14:51:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935981756] [2023-08-27 14:51:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:06,514 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 14:51:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935981756] [2023-08-27 14:51:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935981756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424930797] [2023-08-27 14:51:06,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 14:51:06,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:06,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:06,516 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 14:51:06,523 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 14:51:06,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:51:06,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:06,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 14:51:06,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:06,729 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 14:51:06,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:07,022 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 14:51:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424930797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:07,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 14:51:07,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39217600] [2023-08-27 14:51:07,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:07,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 14:51:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 14:51:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-27 14:51:07,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:07,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 616 transitions, 11751 flow. Second operand has 20 states, 20 states have (on average 61.85) internal successors, (1237), 20 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:07,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:07,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:07,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:09,984 INFO L124 PetriNetUnfolderBase]: 3983/7663 cut-off events. [2023-08-27 14:51:09,984 INFO L125 PetriNetUnfolderBase]: For 115638/115638 co-relation queries the response was YES. [2023-08-27 14:51:10,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49301 conditions, 7663 events. 3983/7663 cut-off events. For 115638/115638 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 54174 event pairs, 407 based on Foata normal form. 53/7716 useless extension candidates. Maximal degree in co-relation 49209. Up to 3989 conditions per place. [2023-08-27 14:51:10,079 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 410 selfloop transitions, 431 changer transitions 22/863 dead transitions. [2023-08-27 14:51:10,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 863 transitions, 15872 flow [2023-08-27 14:51:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-27 14:51:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-27 14:51:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2298 transitions. [2023-08-27 14:51:10,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.368860353130016 [2023-08-27 14:51:10,086 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2298 transitions. [2023-08-27 14:51:10,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2298 transitions. [2023-08-27 14:51:10,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:10,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2298 transitions. [2023-08-27 14:51:10,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.65714285714286) internal successors, (2298), 35 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:10,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:10,099 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:10,099 INFO L175 Difference]: Start difference. First operand has 210 places, 616 transitions, 11751 flow. Second operand 35 states and 2298 transitions. [2023-08-27 14:51:10,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 863 transitions, 15872 flow [2023-08-27 14:51:11,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 863 transitions, 14439 flow, removed 673 selfloop flow, removed 8 redundant places. [2023-08-27 14:51:11,209 INFO L231 Difference]: Finished difference. Result has 240 places, 691 transitions, 12706 flow [2023-08-27 14:51:11,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=10500, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12706, PETRI_PLACES=240, PETRI_TRANSITIONS=691} [2023-08-27 14:51:11,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-08-27 14:51:11,210 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 691 transitions, 12706 flow [2023-08-27 14:51:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.85) internal successors, (1237), 20 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:11,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:11,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:11,219 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 14:51:11,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:11,417 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:11,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1683609748, now seen corresponding path program 6 times [2023-08-27 14:51:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812281740] [2023-08-27 14:51:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:11,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:11,610 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 14:51:11,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812281740] [2023-08-27 14:51:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812281740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621786710] [2023-08-27 14:51:11,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 14:51:11,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:11,612 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 14:51:11,615 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 14:51:11,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 14:51:11,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:11,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 14:51:11,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:11,890 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 14:51:11,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:12,338 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 14:51:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621786710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:12,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 14:51:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020561033] [2023-08-27 14:51:12,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:12,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:51:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:51:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:51:12,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:12,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 691 transitions, 12706 flow. Second operand has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:12,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:12,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:12,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:14,685 INFO L124 PetriNetUnfolderBase]: 3824/7236 cut-off events. [2023-08-27 14:51:14,685 INFO L125 PetriNetUnfolderBase]: For 96571/96571 co-relation queries the response was YES. [2023-08-27 14:51:14,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43878 conditions, 7236 events. 3824/7236 cut-off events. For 96571/96571 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 49291 event pairs, 752 based on Foata normal form. 1/7237 useless extension candidates. Maximal degree in co-relation 43782. Up to 6805 conditions per place. [2023-08-27 14:51:14,745 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 644 selfloop transitions, 88 changer transitions 20/752 dead transitions. [2023-08-27 14:51:14,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 752 transitions, 14482 flow [2023-08-27 14:51:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 14:51:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 14:51:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1193 transitions. [2023-08-27 14:51:14,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723470661672909 [2023-08-27 14:51:14,748 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1193 transitions. [2023-08-27 14:51:14,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1193 transitions. [2023-08-27 14:51:14,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:14,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1193 transitions. [2023-08-27 14:51:14,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.27777777777777) internal successors, (1193), 18 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:14,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:14,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:14,753 INFO L175 Difference]: Start difference. First operand has 240 places, 691 transitions, 12706 flow. Second operand 18 states and 1193 transitions. [2023-08-27 14:51:14,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 752 transitions, 14482 flow [2023-08-27 14:51:15,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 752 transitions, 13620 flow, removed 252 selfloop flow, removed 17 redundant places. [2023-08-27 14:51:15,185 INFO L231 Difference]: Finished difference. Result has 238 places, 692 transitions, 12081 flow [2023-08-27 14:51:15,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12081, PETRI_PLACES=238, PETRI_TRANSITIONS=692} [2023-08-27 14:51:15,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2023-08-27 14:51:15,186 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 692 transitions, 12081 flow [2023-08-27 14:51:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:15,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:15,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:15,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 14:51:15,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:15,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:15,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:15,387 INFO L85 PathProgramCache]: Analyzing trace with hash 979368856, now seen corresponding path program 7 times [2023-08-27 14:51:15,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:15,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580887069] [2023-08-27 14:51:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:15,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:15,648 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 14:51:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580887069] [2023-08-27 14:51:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580887069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137150474] [2023-08-27 14:51:15,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 14:51:15,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:15,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:15,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 14:51:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:15,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 14:51:15,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:15,848 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 14:51:15,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:16,033 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 14:51:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137150474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:16,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 14:51:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698413749] [2023-08-27 14:51:16,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 14:51:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 14:51:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-08-27 14:51:16,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:16,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 692 transitions, 12081 flow. Second operand has 19 states, 19 states have (on average 61.8421052631579) internal successors, (1175), 19 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:16,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:16,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:19,751 INFO L124 PetriNetUnfolderBase]: 5117/9875 cut-off events. [2023-08-27 14:51:19,751 INFO L125 PetriNetUnfolderBase]: For 128115/128115 co-relation queries the response was YES. [2023-08-27 14:51:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57683 conditions, 9875 events. 5117/9875 cut-off events. For 128115/128115 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 72990 event pairs, 771 based on Foata normal form. 41/9916 useless extension candidates. Maximal degree in co-relation 57589. Up to 7081 conditions per place. [2023-08-27 14:51:19,827 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 750 selfloop transitions, 336 changer transitions 27/1113 dead transitions. [2023-08-27 14:51:19,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1113 transitions, 20477 flow [2023-08-27 14:51:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 14:51:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 14:51:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2340 transitions. [2023-08-27 14:51:19,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651685393258427 [2023-08-27 14:51:19,831 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2340 transitions. [2023-08-27 14:51:19,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2340 transitions. [2023-08-27 14:51:19,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:19,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2340 transitions. [2023-08-27 14:51:19,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 65.0) internal successors, (2340), 36 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:19,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:19,840 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:19,841 INFO L175 Difference]: Start difference. First operand has 238 places, 692 transitions, 12081 flow. Second operand 36 states and 2340 transitions. [2023-08-27 14:51:19,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1113 transitions, 20477 flow [2023-08-27 14:51:20,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1113 transitions, 20245 flow, removed 51 selfloop flow, removed 12 redundant places. [2023-08-27 14:51:20,366 INFO L231 Difference]: Finished difference. Result has 270 places, 949 transitions, 18213 flow [2023-08-27 14:51:20,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=11902, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18213, PETRI_PLACES=270, PETRI_TRANSITIONS=949} [2023-08-27 14:51:20,367 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-08-27 14:51:20,367 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 949 transitions, 18213 flow [2023-08-27 14:51:20,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 61.8421052631579) internal successors, (1175), 19 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:20,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:20,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:20,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-27 14:51:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:20,568 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:20,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:20,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1038315540, now seen corresponding path program 8 times [2023-08-27 14:51:20,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:20,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382849156] [2023-08-27 14:51:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:20,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:20,720 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 14:51:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382849156] [2023-08-27 14:51:20,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382849156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844653404] [2023-08-27 14:51:20,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:51:20,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:20,722 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:20,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 14:51:20,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:51:20,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:20,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 14:51:20,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:20,970 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 14:51:20,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:21,509 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 14:51:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844653404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:21,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:21,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 14:51:21,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340136674] [2023-08-27 14:51:21,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:21,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:51:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:51:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:51:21,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:21,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 949 transitions, 18213 flow. Second operand has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:21,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:21,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:21,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:24,967 INFO L124 PetriNetUnfolderBase]: 5035/9581 cut-off events. [2023-08-27 14:51:24,967 INFO L125 PetriNetUnfolderBase]: For 148935/148935 co-relation queries the response was YES. [2023-08-27 14:51:25,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62147 conditions, 9581 events. 5035/9581 cut-off events. For 148935/148935 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 69167 event pairs, 952 based on Foata normal form. 2/9583 useless extension candidates. Maximal degree in co-relation 62040. Up to 9152 conditions per place. [2023-08-27 14:51:25,059 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 890 selfloop transitions, 95 changer transitions 20/1005 dead transitions. [2023-08-27 14:51:25,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1005 transitions, 20531 flow [2023-08-27 14:51:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 14:51:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 14:51:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1057 transitions. [2023-08-27 14:51:25,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711376404494382 [2023-08-27 14:51:25,062 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1057 transitions. [2023-08-27 14:51:25,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1057 transitions. [2023-08-27 14:51:25,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:25,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1057 transitions. [2023-08-27 14:51:25,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.0625) internal successors, (1057), 16 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:25,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:25,067 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:25,067 INFO L175 Difference]: Start difference. First operand has 270 places, 949 transitions, 18213 flow. Second operand 16 states and 1057 transitions. [2023-08-27 14:51:25,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1005 transitions, 20531 flow [2023-08-27 14:51:26,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1005 transitions, 20014 flow, removed 223 selfloop flow, removed 11 redundant places. [2023-08-27 14:51:26,035 INFO L231 Difference]: Finished difference. Result has 277 places, 951 transitions, 17967 flow [2023-08-27 14:51:26,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17721, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17967, PETRI_PLACES=277, PETRI_TRANSITIONS=951} [2023-08-27 14:51:26,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-08-27 14:51:26,036 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 951 transitions, 17967 flow [2023-08-27 14:51:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:26,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:26,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:26,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:26,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:26,238 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:26,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2039096026, now seen corresponding path program 9 times [2023-08-27 14:51:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943024713] [2023-08-27 14:51:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:26,420 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 14:51:26,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:26,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943024713] [2023-08-27 14:51:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943024713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:26,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589805132] [2023-08-27 14:51:26,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 14:51:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:26,422 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:26,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 14:51:26,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 14:51:26,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:26,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 14:51:26,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:26,696 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 14:51:26,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:27,228 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 14:51:27,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589805132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:27,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 14:51:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133659817] [2023-08-27 14:51:27,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:51:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:51:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:51:27,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:27,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 951 transitions, 17967 flow. Second operand has 22 states, 22 states have (on average 61.86363636363637) internal successors, (1361), 22 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:27,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:30,818 INFO L124 PetriNetUnfolderBase]: 5008/9526 cut-off events. [2023-08-27 14:51:30,818 INFO L125 PetriNetUnfolderBase]: For 150727/150727 co-relation queries the response was YES. [2023-08-27 14:51:30,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61693 conditions, 9526 events. 5008/9526 cut-off events. For 150727/150727 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 68653 event pairs, 944 based on Foata normal form. 1/9527 useless extension candidates. Maximal degree in co-relation 61581. Up to 9124 conditions per place. [2023-08-27 14:51:30,902 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 880 selfloop transitions, 107 changer transitions 9/996 dead transitions. [2023-08-27 14:51:30,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 996 transitions, 20247 flow [2023-08-27 14:51:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 14:51:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 14:51:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1166 transitions. [2023-08-27 14:51:30,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36392009987515606 [2023-08-27 14:51:30,904 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1166 transitions. [2023-08-27 14:51:30,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1166 transitions. [2023-08-27 14:51:30,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:30,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1166 transitions. [2023-08-27 14:51:30,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 64.77777777777777) internal successors, (1166), 18 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:30,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:30,909 INFO L175 Difference]: Start difference. First operand has 277 places, 951 transitions, 17967 flow. Second operand 18 states and 1166 transitions. [2023-08-27 14:51:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 996 transitions, 20247 flow [2023-08-27 14:51:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 996 transitions, 19975 flow, removed 43 selfloop flow, removed 17 redundant places. [2023-08-27 14:51:31,965 INFO L231 Difference]: Finished difference. Result has 274 places, 957 transitions, 18096 flow [2023-08-27 14:51:31,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17706, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18096, PETRI_PLACES=274, PETRI_TRANSITIONS=957} [2023-08-27 14:51:31,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2023-08-27 14:51:31,966 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 957 transitions, 18096 flow [2023-08-27 14:51:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.86363636363637) internal successors, (1361), 22 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:31,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:31,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:31,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:32,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:32,172 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:32,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -662935337, now seen corresponding path program 10 times [2023-08-27 14:51:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609728274] [2023-08-27 14:51:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:32,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:32,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609728274] [2023-08-27 14:51:32,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609728274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:32,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399940321] [2023-08-27 14:51:32,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 14:51:32,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:32,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:32,377 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:32,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 14:51:32,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 14:51:32,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:32,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:51:32,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:32,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399940321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:32,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:32,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 14:51:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983984977] [2023-08-27 14:51:32,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:32,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 14:51:32,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 14:51:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-08-27 14:51:32,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:32,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 957 transitions, 18096 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:32,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:32,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:32,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:37,003 INFO L124 PetriNetUnfolderBase]: 5310/10278 cut-off events. [2023-08-27 14:51:37,003 INFO L125 PetriNetUnfolderBase]: For 155719/155719 co-relation queries the response was YES. [2023-08-27 14:51:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64618 conditions, 10278 events. 5310/10278 cut-off events. For 155719/155719 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 76930 event pairs, 509 based on Foata normal form. 39/10317 useless extension candidates. Maximal degree in co-relation 64515. Up to 7802 conditions per place. [2023-08-27 14:51:37,105 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 703 selfloop transitions, 342 changer transitions 81/1126 dead transitions. [2023-08-27 14:51:37,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1126 transitions, 22043 flow [2023-08-27 14:51:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 14:51:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 14:51:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2079 transitions. [2023-08-27 14:51:37,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649929775280899 [2023-08-27 14:51:37,108 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2079 transitions. [2023-08-27 14:51:37,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2079 transitions. [2023-08-27 14:51:37,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:37,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2079 transitions. [2023-08-27 14:51:37,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 64.96875) internal successors, (2079), 32 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,117 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:37,117 INFO L175 Difference]: Start difference. First operand has 274 places, 957 transitions, 18096 flow. Second operand 32 states and 2079 transitions. [2023-08-27 14:51:37,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1126 transitions, 22043 flow [2023-08-27 14:51:38,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1126 transitions, 21574 flow, removed 34 selfloop flow, removed 17 redundant places. [2023-08-27 14:51:38,146 INFO L231 Difference]: Finished difference. Result has 293 places, 963 transitions, 18639 flow [2023-08-27 14:51:38,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17656, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=18639, PETRI_PLACES=293, PETRI_TRANSITIONS=963} [2023-08-27 14:51:38,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2023-08-27 14:51:38,147 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 963 transitions, 18639 flow [2023-08-27 14:51:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:38,148 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:38,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:38,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 14:51:38,353 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:38,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1337260007, now seen corresponding path program 11 times [2023-08-27 14:51:38,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:38,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996486242] [2023-08-27 14:51:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996486242] [2023-08-27 14:51:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996486242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:38,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630355201] [2023-08-27 14:51:38,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 14:51:38,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:38,547 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:38,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 14:51:38,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:51:38,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:38,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:51:38,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:38,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630355201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:38,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 14:51:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746878011] [2023-08-27 14:51:38,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:38,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 14:51:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 14:51:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-08-27 14:51:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 963 transitions, 18639 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:43,938 INFO L124 PetriNetUnfolderBase]: 6290/12073 cut-off events. [2023-08-27 14:51:43,938 INFO L125 PetriNetUnfolderBase]: For 213227/213227 co-relation queries the response was YES. [2023-08-27 14:51:44,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79219 conditions, 12073 events. 6290/12073 cut-off events. For 213227/213227 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 92068 event pairs, 505 based on Foata normal form. 58/12131 useless extension candidates. Maximal degree in co-relation 79114. Up to 7907 conditions per place. [2023-08-27 14:51:44,048 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 780 selfloop transitions, 496 changer transitions 176/1452 dead transitions. [2023-08-27 14:51:44,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1452 transitions, 28633 flow [2023-08-27 14:51:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 14:51:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 14:51:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2534 transitions. [2023-08-27 14:51:44,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36502448861999426 [2023-08-27 14:51:44,051 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2534 transitions. [2023-08-27 14:51:44,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2534 transitions. [2023-08-27 14:51:44,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:44,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2534 transitions. [2023-08-27 14:51:44,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 64.97435897435898) internal successors, (2534), 39 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,060 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:44,060 INFO L175 Difference]: Start difference. First operand has 293 places, 963 transitions, 18639 flow. Second operand 39 states and 2534 transitions. [2023-08-27 14:51:44,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1452 transitions, 28633 flow [2023-08-27 14:51:45,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 1452 transitions, 28117 flow, removed 157 selfloop flow, removed 16 redundant places. [2023-08-27 14:51:45,732 INFO L231 Difference]: Finished difference. Result has 319 places, 1109 transitions, 23126 flow [2023-08-27 14:51:45,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=18191, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=23126, PETRI_PLACES=319, PETRI_TRANSITIONS=1109} [2023-08-27 14:51:45,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2023-08-27 14:51:45,733 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1109 transitions, 23126 flow [2023-08-27 14:51:45,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:45,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:45,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:45,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 14:51:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 14:51:45,939 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:45,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1534773799, now seen corresponding path program 12 times [2023-08-27 14:51:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465006333] [2023-08-27 14:51:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465006333] [2023-08-27 14:51:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465006333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050784636] [2023-08-27 14:51:46,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 14:51:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:46,099 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:46,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 14:51:46,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 14:51:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:51:46,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:51:46,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:46,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050784636] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:46,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:46,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:51:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644794393] [2023-08-27 14:51:46,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:46,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:51:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:51:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:51:46,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:46,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1109 transitions, 23126 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:46,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:46,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:46,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:51:53,999 INFO L124 PetriNetUnfolderBase]: 5867/11372 cut-off events. [2023-08-27 14:51:53,999 INFO L125 PetriNetUnfolderBase]: For 223627/223627 co-relation queries the response was YES. [2023-08-27 14:51:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78010 conditions, 11372 events. 5867/11372 cut-off events. For 223627/223627 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 86445 event pairs, 926 based on Foata normal form. 34/11406 useless extension candidates. Maximal degree in co-relation 77901. Up to 9262 conditions per place. [2023-08-27 14:51:54,104 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 952 selfloop transitions, 466 changer transitions 20/1438 dead transitions. [2023-08-27 14:51:54,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1438 transitions, 29620 flow [2023-08-27 14:51:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-27 14:51:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-27 14:51:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3716 transitions. [2023-08-27 14:51:54,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35993800852382796 [2023-08-27 14:51:54,109 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3716 transitions. [2023-08-27 14:51:54,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3716 transitions. [2023-08-27 14:51:54,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:51:54,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3716 transitions. [2023-08-27 14:51:54,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 64.06896551724138) internal successors, (3716), 58 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:54,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 178.0) internal successors, (10502), 59 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:54,121 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 178.0) internal successors, (10502), 59 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:54,121 INFO L175 Difference]: Start difference. First operand has 319 places, 1109 transitions, 23126 flow. Second operand 58 states and 3716 transitions. [2023-08-27 14:51:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1438 transitions, 29620 flow [2023-08-27 14:51:55,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1438 transitions, 28943 flow, removed 134 selfloop flow, removed 20 redundant places. [2023-08-27 14:51:55,713 INFO L231 Difference]: Finished difference. Result has 361 places, 1209 transitions, 25530 flow [2023-08-27 14:51:55,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=22492, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=25530, PETRI_PLACES=361, PETRI_TRANSITIONS=1209} [2023-08-27 14:51:55,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2023-08-27 14:51:55,715 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 1209 transitions, 25530 flow [2023-08-27 14:51:55,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:55,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:51:55,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:51:55,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 14:51:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 14:51:55,920 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:51:55,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:51:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 233312003, now seen corresponding path program 13 times [2023-08-27 14:51:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:51:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153946372] [2023-08-27 14:51:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:51:55,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:51:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:56,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:51:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153946372] [2023-08-27 14:51:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153946372] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:51:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209628133] [2023-08-27 14:51:56,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 14:51:56,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:51:56,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:51:56,093 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:51:56,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 14:51:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:51:56,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:51:56,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:51:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:56,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:51:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:51:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209628133] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:51:56,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:51:56,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 14:51:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531194858] [2023-08-27 14:51:56,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:51:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 14:51:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:51:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 14:51:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-08-27 14:51:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:51:56,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 1209 transitions, 25530 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:51:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:51:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:51:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:03,555 INFO L124 PetriNetUnfolderBase]: 7930/15372 cut-off events. [2023-08-27 14:52:03,555 INFO L125 PetriNetUnfolderBase]: For 303867/303867 co-relation queries the response was YES. [2023-08-27 14:52:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108673 conditions, 15372 events. 7930/15372 cut-off events. For 303867/303867 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 123901 event pairs, 675 based on Foata normal form. 135/15507 useless extension candidates. Maximal degree in co-relation 108559. Up to 6218 conditions per place. [2023-08-27 14:52:03,712 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 672 selfloop transitions, 881 changer transitions 304/1857 dead transitions. [2023-08-27 14:52:03,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1857 transitions, 40389 flow [2023-08-27 14:52:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-27 14:52:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-27 14:52:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3233 transitions. [2023-08-27 14:52:03,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3632584269662921 [2023-08-27 14:52:03,716 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3233 transitions. [2023-08-27 14:52:03,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3233 transitions. [2023-08-27 14:52:03,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:03,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3233 transitions. [2023-08-27 14:52:03,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 64.66) internal successors, (3233), 50 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:03,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 178.0) internal successors, (9078), 51 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:03,727 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 178.0) internal successors, (9078), 51 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:03,727 INFO L175 Difference]: Start difference. First operand has 361 places, 1209 transitions, 25530 flow. Second operand 50 states and 3233 transitions. [2023-08-27 14:52:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1857 transitions, 40389 flow [2023-08-27 14:52:06,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 1857 transitions, 39033 flow, removed 323 selfloop flow, removed 33 redundant places. [2023-08-27 14:52:06,648 INFO L231 Difference]: Finished difference. Result has 385 places, 1354 transitions, 31829 flow [2023-08-27 14:52:06,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=24365, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=31829, PETRI_PLACES=385, PETRI_TRANSITIONS=1354} [2023-08-27 14:52:06,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2023-08-27 14:52:06,649 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1354 transitions, 31829 flow [2023-08-27 14:52:06,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:06,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:06,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:06,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-27 14:52:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:06,854 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:52:06,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash -386799797, now seen corresponding path program 14 times [2023-08-27 14:52:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218849041] [2023-08-27 14:52:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:07,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218849041] [2023-08-27 14:52:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218849041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788439674] [2023-08-27 14:52:07,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:52:07,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:07,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:07,029 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:07,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 14:52:07,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:52:07,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:07,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:52:07,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:07,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788439674] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:07,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:07,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:52:07,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381429570] [2023-08-27 14:52:07,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:07,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:52:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:52:07,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:52:07,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:52:07,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1354 transitions, 31829 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:52:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:17,184 INFO L124 PetriNetUnfolderBase]: 6549/13505 cut-off events. [2023-08-27 14:52:17,184 INFO L125 PetriNetUnfolderBase]: For 311918/311918 co-relation queries the response was YES. [2023-08-27 14:52:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103435 conditions, 13505 events. 6549/13505 cut-off events. For 311918/311918 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 113064 event pairs, 896 based on Foata normal form. 53/13558 useless extension candidates. Maximal degree in co-relation 103318. Up to 8961 conditions per place. [2023-08-27 14:52:17,316 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1108 selfloop transitions, 682 changer transitions 34/1824 dead transitions. [2023-08-27 14:52:17,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1824 transitions, 42246 flow [2023-08-27 14:52:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-27 14:52:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-27 14:52:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 4692 transitions. [2023-08-27 14:52:17,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36108973372325687 [2023-08-27 14:52:17,320 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 4692 transitions. [2023-08-27 14:52:17,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 4692 transitions. [2023-08-27 14:52:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:17,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 4692 transitions. [2023-08-27 14:52:17,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 64.27397260273973) internal successors, (4692), 73 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:17,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 178.0) internal successors, (13172), 74 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:17,343 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 178.0) internal successors, (13172), 74 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:17,343 INFO L175 Difference]: Start difference. First operand has 385 places, 1354 transitions, 31829 flow. Second operand 73 states and 4692 transitions. [2023-08-27 14:52:17,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1824 transitions, 42246 flow [2023-08-27 14:52:20,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1824 transitions, 40708 flow, removed 433 selfloop flow, removed 35 redundant places. [2023-08-27 14:52:20,049 INFO L231 Difference]: Finished difference. Result has 434 places, 1515 transitions, 35118 flow [2023-08-27 14:52:20,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=30395, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=35118, PETRI_PLACES=434, PETRI_TRANSITIONS=1515} [2023-08-27 14:52:20,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-08-27 14:52:20,050 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 1515 transitions, 35118 flow [2023-08-27 14:52:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:20,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:20,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:20,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-27 14:52:20,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 14:52:20,253 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:52:20,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash -414505427, now seen corresponding path program 15 times [2023-08-27 14:52:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819157659] [2023-08-27 14:52:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819157659] [2023-08-27 14:52:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819157659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950305300] [2023-08-27 14:52:20,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 14:52:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:20,421 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:20,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 14:52:20,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 14:52:20,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:20,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:52:20,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:20,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:21,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950305300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:21,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:21,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:52:21,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514085906] [2023-08-27 14:52:21,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:52:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:52:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:52:21,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:52:21,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1515 transitions, 35118 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:21,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:21,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:52:21,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:31,017 INFO L124 PetriNetUnfolderBase]: 6320/12932 cut-off events. [2023-08-27 14:52:31,018 INFO L125 PetriNetUnfolderBase]: For 325433/325433 co-relation queries the response was YES. [2023-08-27 14:52:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107755 conditions, 12932 events. 6320/12932 cut-off events. For 325433/325433 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 106399 event pairs, 884 based on Foata normal form. 51/12983 useless extension candidates. Maximal degree in co-relation 107625. Up to 8961 conditions per place. [2023-08-27 14:52:31,158 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 969 selfloop transitions, 744 changer transitions 15/1728 dead transitions. [2023-08-27 14:52:31,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1728 transitions, 40975 flow [2023-08-27 14:52:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-27 14:52:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-27 14:52:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 4168 transitions. [2023-08-27 14:52:31,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602420051858254 [2023-08-27 14:52:31,167 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 4168 transitions. [2023-08-27 14:52:31,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 4168 transitions. [2023-08-27 14:52:31,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:31,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 4168 transitions. [2023-08-27 14:52:31,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 64.12307692307692) internal successors, (4168), 65 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:31,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 178.0) internal successors, (11748), 66 states have internal predecessors, (11748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:31,178 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 178.0) internal successors, (11748), 66 states have internal predecessors, (11748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:31,178 INFO L175 Difference]: Start difference. First operand has 434 places, 1515 transitions, 35118 flow. Second operand 65 states and 4168 transitions. [2023-08-27 14:52:31,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1728 transitions, 40975 flow [2023-08-27 14:52:34,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1728 transitions, 40134 flow, removed 197 selfloop flow, removed 39 redundant places. [2023-08-27 14:52:34,767 INFO L231 Difference]: Finished difference. Result has 455 places, 1515 transitions, 36191 flow [2023-08-27 14:52:34,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=34310, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=36191, PETRI_PLACES=455, PETRI_TRANSITIONS=1515} [2023-08-27 14:52:34,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2023-08-27 14:52:34,769 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 1515 transitions, 36191 flow [2023-08-27 14:52:34,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:34,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:34,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:34,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 14:52:34,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:34,974 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:52:34,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash 235701973, now seen corresponding path program 16 times [2023-08-27 14:52:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:34,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299216465] [2023-08-27 14:52:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299216465] [2023-08-27 14:52:35,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299216465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052643403] [2023-08-27 14:52:35,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 14:52:35,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:35,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:35,145 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:35,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 14:52:35,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 14:52:35,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:35,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:52:35,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:35,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052643403] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:35,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:35,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 14:52:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544193267] [2023-08-27 14:52:35,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:52:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:52:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:52:35,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:52:35,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1515 transitions, 36191 flow. Second operand has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:35,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:35,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:52:35,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:52:44,867 INFO L124 PetriNetUnfolderBase]: 8002/16089 cut-off events. [2023-08-27 14:52:44,867 INFO L125 PetriNetUnfolderBase]: For 404200/404200 co-relation queries the response was YES. [2023-08-27 14:52:44,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133974 conditions, 16089 events. 8002/16089 cut-off events. For 404200/404200 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 135900 event pairs, 795 based on Foata normal form. 94/16183 useless extension candidates. Maximal degree in co-relation 133844. Up to 10441 conditions per place. [2023-08-27 14:52:45,051 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1297 selfloop transitions, 668 changer transitions 30/1995 dead transitions. [2023-08-27 14:52:45,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1995 transitions, 48461 flow [2023-08-27 14:52:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 14:52:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 14:52:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3055 transitions. [2023-08-27 14:52:45,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651685393258427 [2023-08-27 14:52:45,055 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3055 transitions. [2023-08-27 14:52:45,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3055 transitions. [2023-08-27 14:52:45,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:52:45,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3055 transitions. [2023-08-27 14:52:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 65.0) internal successors, (3055), 47 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:45,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:45,062 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:45,062 INFO L175 Difference]: Start difference. First operand has 455 places, 1515 transitions, 36191 flow. Second operand 47 states and 3055 transitions. [2023-08-27 14:52:45,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1995 transitions, 48461 flow [2023-08-27 14:52:49,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1995 transitions, 47407 flow, removed 102 selfloop flow, removed 47 redundant places. [2023-08-27 14:52:49,329 INFO L231 Difference]: Finished difference. Result has 466 places, 1790 transitions, 43860 flow [2023-08-27 14:52:49,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=35213, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=968, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=43860, PETRI_PLACES=466, PETRI_TRANSITIONS=1790} [2023-08-27 14:52:49,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2023-08-27 14:52:49,330 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1790 transitions, 43860 flow [2023-08-27 14:52:49,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:49,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:52:49,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:52:49,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 14:52:49,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 14:52:49,531 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:52:49,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:52:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1538832135, now seen corresponding path program 17 times [2023-08-27 14:52:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:52:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774639629] [2023-08-27 14:52:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:52:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:52:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:52:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:52:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774639629] [2023-08-27 14:52:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774639629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:52:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519126365] [2023-08-27 14:52:49,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 14:52:49,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:52:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:52:49,697 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:52:49,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 14:52:49,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:52:49,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:52:49,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:52:49,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:52:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:49,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:52:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:52:50,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519126365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:52:50,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:52:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 14:52:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443219074] [2023-08-27 14:52:50,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:52:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:52:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:52:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:52:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:52:50,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:52:50,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1790 transitions, 43860 flow. Second operand has 22 states, 22 states have (on average 61.72727272727273) internal successors, (1358), 22 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:52:50,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:52:50,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:52:50,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:02,318 INFO L124 PetriNetUnfolderBase]: 9984/19339 cut-off events. [2023-08-27 14:53:02,318 INFO L125 PetriNetUnfolderBase]: For 555859/555859 co-relation queries the response was YES. [2023-08-27 14:53:02,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173697 conditions, 19339 events. 9984/19339 cut-off events. For 555859/555859 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 161973 event pairs, 1034 based on Foata normal form. 42/19381 useless extension candidates. Maximal degree in co-relation 173555. Up to 14095 conditions per place. [2023-08-27 14:53:02,544 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1680 selfloop transitions, 476 changer transitions 210/2366 dead transitions. [2023-08-27 14:53:02,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 2366 transitions, 60336 flow [2023-08-27 14:53:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 14:53:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 14:53:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2846 transitions. [2023-08-27 14:53:02,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36338100102145043 [2023-08-27 14:53:02,547 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2846 transitions. [2023-08-27 14:53:02,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2846 transitions. [2023-08-27 14:53:02,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:02,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2846 transitions. [2023-08-27 14:53:02,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 64.68181818181819) internal successors, (2846), 44 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:02,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:02,555 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:02,555 INFO L175 Difference]: Start difference. First operand has 466 places, 1790 transitions, 43860 flow. Second operand 44 states and 2846 transitions. [2023-08-27 14:53:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 2366 transitions, 60336 flow [2023-08-27 14:53:09,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 2366 transitions, 59234 flow, removed 522 selfloop flow, removed 17 redundant places. [2023-08-27 14:53:09,191 INFO L231 Difference]: Finished difference. Result has 499 places, 1980 transitions, 49796 flow [2023-08-27 14:53:09,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=42781, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=49796, PETRI_PLACES=499, PETRI_TRANSITIONS=1980} [2023-08-27 14:53:09,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 469 predicate places. [2023-08-27 14:53:09,193 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 1980 transitions, 49796 flow [2023-08-27 14:53:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.72727272727273) internal successors, (1358), 22 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:09,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:09,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:09,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 14:53:09,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:09,398 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:53:09,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1173194259, now seen corresponding path program 18 times [2023-08-27 14:53:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705444952] [2023-08-27 14:53:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:09,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:09,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705444952] [2023-08-27 14:53:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705444952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514378260] [2023-08-27 14:53:09,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 14:53:09,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:09,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:53:09,563 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:53:09,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 14:53:09,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 14:53:09,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:53:09,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:53:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:53:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:09,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:53:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514378260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:53:10,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:53:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:53:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967594101] [2023-08-27 14:53:10,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:53:10,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:53:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:53:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:53:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:53:10,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1980 transitions, 49796 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:10,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:10,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:53:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:25,264 INFO L124 PetriNetUnfolderBase]: 9061/18205 cut-off events. [2023-08-27 14:53:25,264 INFO L125 PetriNetUnfolderBase]: For 652639/652639 co-relation queries the response was YES. [2023-08-27 14:53:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174852 conditions, 18205 events. 9061/18205 cut-off events. For 652639/652639 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 156906 event pairs, 1494 based on Foata normal form. 21/18226 useless extension candidates. Maximal degree in co-relation 174702. Up to 16437 conditions per place. [2023-08-27 14:53:25,492 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1763 selfloop transitions, 361 changer transitions 20/2144 dead transitions. [2023-08-27 14:53:25,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 2144 transitions, 56159 flow [2023-08-27 14:53:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 14:53:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 14:53:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3022 transitions. [2023-08-27 14:53:25,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361224001912503 [2023-08-27 14:53:25,495 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3022 transitions. [2023-08-27 14:53:25,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3022 transitions. [2023-08-27 14:53:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:25,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3022 transitions. [2023-08-27 14:53:25,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 64.29787234042553) internal successors, (3022), 47 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:25,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:25,505 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:25,505 INFO L175 Difference]: Start difference. First operand has 499 places, 1980 transitions, 49796 flow. Second operand 47 states and 3022 transitions. [2023-08-27 14:53:25,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 2144 transitions, 56159 flow [2023-08-27 14:53:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 2144 transitions, 54333 flow, removed 776 selfloop flow, removed 19 redundant places. [2023-08-27 14:53:32,896 INFO L231 Difference]: Finished difference. Result has 533 places, 2024 transitions, 50095 flow [2023-08-27 14:53:32,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=48066, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=50095, PETRI_PLACES=533, PETRI_TRANSITIONS=2024} [2023-08-27 14:53:32,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2023-08-27 14:53:32,897 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 2024 transitions, 50095 flow [2023-08-27 14:53:32,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:32,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:32,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:32,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 14:53:33,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:33,098 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:53:33,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1201937769, now seen corresponding path program 19 times [2023-08-27 14:53:33,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:33,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664557953] [2023-08-27 14:53:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:33,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664557953] [2023-08-27 14:53:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664557953] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570834079] [2023-08-27 14:53:33,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 14:53:33,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:53:33,284 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:53:33,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 14:53:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:33,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:53:33,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:53:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:33,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:53:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:33,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570834079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:53:33,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:53:33,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 14:53:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009952852] [2023-08-27 14:53:33,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:53:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 14:53:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 14:53:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-08-27 14:53:33,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:53:33,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 2024 transitions, 50095 flow. Second operand has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:33,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:33,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:53:33,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:53:47,434 INFO L124 PetriNetUnfolderBase]: 9284/18794 cut-off events. [2023-08-27 14:53:47,434 INFO L125 PetriNetUnfolderBase]: For 633513/633513 co-relation queries the response was YES. [2023-08-27 14:53:47,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175921 conditions, 18794 events. 9284/18794 cut-off events. For 633513/633513 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 164284 event pairs, 982 based on Foata normal form. 69/18863 useless extension candidates. Maximal degree in co-relation 175762. Up to 14102 conditions per place. [2023-08-27 14:53:47,680 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1682 selfloop transitions, 569 changer transitions 24/2275 dead transitions. [2023-08-27 14:53:47,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 2275 transitions, 58944 flow [2023-08-27 14:53:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 14:53:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 14:53:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2863 transitions. [2023-08-27 14:53:47,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36555158324821246 [2023-08-27 14:53:47,688 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2863 transitions. [2023-08-27 14:53:47,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2863 transitions. [2023-08-27 14:53:47,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:53:47,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2863 transitions. [2023-08-27 14:53:47,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.06818181818181) internal successors, (2863), 44 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:47,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:47,693 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:47,693 INFO L175 Difference]: Start difference. First operand has 533 places, 2024 transitions, 50095 flow. Second operand 44 states and 2863 transitions. [2023-08-27 14:53:47,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 2275 transitions, 58944 flow [2023-08-27 14:53:55,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2275 transitions, 58164 flow, removed 352 selfloop flow, removed 16 redundant places. [2023-08-27 14:53:55,402 INFO L231 Difference]: Finished difference. Result has 566 places, 2087 transitions, 52868 flow [2023-08-27 14:53:55,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=49427, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=52868, PETRI_PLACES=566, PETRI_TRANSITIONS=2087} [2023-08-27 14:53:55,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2023-08-27 14:53:55,404 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2087 transitions, 52868 flow [2023-08-27 14:53:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:55,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:53:55,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:53:55,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 14:53:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:55,609 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:53:55,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:53:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1881028705, now seen corresponding path program 20 times [2023-08-27 14:53:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:53:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747869195] [2023-08-27 14:53:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:53:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:53:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:53:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:53:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747869195] [2023-08-27 14:53:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747869195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:53:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970508444] [2023-08-27 14:53:55,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:53:55,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:53:55,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:53:55,775 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:53:55,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 14:53:55,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:53:55,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:53:55,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:53:55,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:53:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:56,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:53:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:53:56,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970508444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:53:56,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:53:56,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:53:56,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16545094] [2023-08-27 14:53:56,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:53:56,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:53:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:53:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:53:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:53:56,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:53:56,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 2087 transitions, 52868 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:53:56,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:53:56,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:53:56,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:12,955 INFO L124 PetriNetUnfolderBase]: 9935/20491 cut-off events. [2023-08-27 14:54:12,955 INFO L125 PetriNetUnfolderBase]: For 799458/799458 co-relation queries the response was YES. [2023-08-27 14:54:13,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199577 conditions, 20491 events. 9935/20491 cut-off events. For 799458/799458 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 184896 event pairs, 1220 based on Foata normal form. 51/20542 useless extension candidates. Maximal degree in co-relation 199408. Up to 16762 conditions per place. [2023-08-27 14:54:13,255 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 1892 selfloop transitions, 522 changer transitions 25/2439 dead transitions. [2023-08-27 14:54:13,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 2439 transitions, 65230 flow [2023-08-27 14:54:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 14:54:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 14:54:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3014 transitions. [2023-08-27 14:54:13,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36026775041836 [2023-08-27 14:54:13,258 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3014 transitions. [2023-08-27 14:54:13,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3014 transitions. [2023-08-27 14:54:13,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:54:13,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3014 transitions. [2023-08-27 14:54:13,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 64.12765957446808) internal successors, (3014), 47 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:13,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:13,264 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:13,264 INFO L175 Difference]: Start difference. First operand has 566 places, 2087 transitions, 52868 flow. Second operand 47 states and 3014 transitions. [2023-08-27 14:54:13,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 2439 transitions, 65230 flow [2023-08-27 14:54:22,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2439 transitions, 64325 flow, removed 303 selfloop flow, removed 27 redundant places. [2023-08-27 14:54:22,725 INFO L231 Difference]: Finished difference. Result has 590 places, 2269 transitions, 59186 flow [2023-08-27 14:54:22,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=52155, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=59186, PETRI_PLACES=590, PETRI_TRANSITIONS=2269} [2023-08-27 14:54:22,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2023-08-27 14:54:22,727 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 2269 transitions, 59186 flow [2023-08-27 14:54:22,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:22,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:54:22,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:54:22,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 14:54:22,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 14:54:22,933 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:54:22,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:54:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1909772215, now seen corresponding path program 21 times [2023-08-27 14:54:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:54:22,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945791067] [2023-08-27 14:54:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:54:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:54:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:54:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:54:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945791067] [2023-08-27 14:54:23,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945791067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:54:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651103052] [2023-08-27 14:54:23,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 14:54:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:54:23,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:54:23,152 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:54:23,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 14:54:23,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 14:54:23,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:54:23,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 14:54:23,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:54:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:23,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:54:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651103052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:54:23,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:54:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 14:54:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486859999] [2023-08-27 14:54:23,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:54:23,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:54:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:54:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:54:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:54:23,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:54:23,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 2269 transitions, 59186 flow. Second operand has 25 states, 25 states have (on average 61.84) internal successors, (1546), 25 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:23,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:54:23,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:54:23,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:54:40,945 INFO L124 PetriNetUnfolderBase]: 10136/20686 cut-off events. [2023-08-27 14:54:40,945 INFO L125 PetriNetUnfolderBase]: For 888586/888586 co-relation queries the response was YES. [2023-08-27 14:54:41,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210340 conditions, 20686 events. 10136/20686 cut-off events. For 888586/888586 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 184862 event pairs, 1222 based on Foata normal form. 49/20735 useless extension candidates. Maximal degree in co-relation 210167. Up to 16813 conditions per place. [2023-08-27 14:54:41,253 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2070 selfloop transitions, 470 changer transitions 13/2553 dead transitions. [2023-08-27 14:54:41,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 2553 transitions, 70381 flow [2023-08-27 14:54:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 14:54:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 14:54:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3081 transitions. [2023-08-27 14:54:41,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36060393258426965 [2023-08-27 14:54:41,259 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3081 transitions. [2023-08-27 14:54:41,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3081 transitions. [2023-08-27 14:54:41,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:54:41,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3081 transitions. [2023-08-27 14:54:41,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 64.1875) internal successors, (3081), 48 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:41,269 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:41,269 INFO L175 Difference]: Start difference. First operand has 590 places, 2269 transitions, 59186 flow. Second operand 48 states and 3081 transitions. [2023-08-27 14:54:41,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 2553 transitions, 70381 flow [2023-08-27 14:54:53,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 2553 transitions, 68242 flow, removed 908 selfloop flow, removed 19 redundant places. [2023-08-27 14:54:53,241 INFO L231 Difference]: Finished difference. Result has 620 places, 2331 transitions, 60145 flow [2023-08-27 14:54:53,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=57646, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=60145, PETRI_PLACES=620, PETRI_TRANSITIONS=2331} [2023-08-27 14:54:53,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 590 predicate places. [2023-08-27 14:54:53,242 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 2331 transitions, 60145 flow [2023-08-27 14:54:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.84) internal successors, (1546), 25 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:53,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:54:53,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:54:53,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 14:54:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 14:54:53,448 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:54:53,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:54:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1556253353, now seen corresponding path program 22 times [2023-08-27 14:54:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:54:53,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387314899] [2023-08-27 14:54:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:54:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:54:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:54:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:54:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387314899] [2023-08-27 14:54:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387314899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:54:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959882236] [2023-08-27 14:54:53,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 14:54:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:54:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:54:53,599 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:54:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 14:54:53,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 14:54:53,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:54:53,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 14:54:53,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:54:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:53,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:54:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:54:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959882236] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:54:54,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:54:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 14:54:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093985629] [2023-08-27 14:54:54,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:54:54,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 14:54:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:54:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 14:54:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-08-27 14:54:54,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:54:54,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 2331 transitions, 60145 flow. Second operand has 21 states, 21 states have (on average 61.76190476190476) internal successors, (1297), 21 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:54:54,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:54:54,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:54:54,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:55:12,551 INFO L124 PetriNetUnfolderBase]: 12366/24182 cut-off events. [2023-08-27 14:55:12,551 INFO L125 PetriNetUnfolderBase]: For 996891/996891 co-relation queries the response was YES. [2023-08-27 14:55:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247264 conditions, 24182 events. 12366/24182 cut-off events. For 996891/996891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 212218 event pairs, 1078 based on Foata normal form. 159/24341 useless extension candidates. Maximal degree in co-relation 247087. Up to 17301 conditions per place. [2023-08-27 14:55:12,915 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 2021 selfloop transitions, 1203 changer transitions 50/3274 dead transitions. [2023-08-27 14:55:12,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 3274 transitions, 89808 flow [2023-08-27 14:55:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 14:55:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 14:55:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2566 transitions. [2023-08-27 14:55:12,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3603932584269663 [2023-08-27 14:55:12,917 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2566 transitions. [2023-08-27 14:55:12,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2566 transitions. [2023-08-27 14:55:12,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:55:12,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2566 transitions. [2023-08-27 14:55:12,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 64.15) internal successors, (2566), 40 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:12,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:12,924 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:12,924 INFO L175 Difference]: Start difference. First operand has 620 places, 2331 transitions, 60145 flow. Second operand 40 states and 2566 transitions. [2023-08-27 14:55:12,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 3274 transitions, 89808 flow [2023-08-27 14:55:25,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 3274 transitions, 89307 flow, removed 51 selfloop flow, removed 27 redundant places. [2023-08-27 14:55:25,593 INFO L231 Difference]: Finished difference. Result has 631 places, 2906 transitions, 79782 flow [2023-08-27 14:55:25,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=59669, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=79782, PETRI_PLACES=631, PETRI_TRANSITIONS=2906} [2023-08-27 14:55:25,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 601 predicate places. [2023-08-27 14:55:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 2906 transitions, 79782 flow [2023-08-27 14:55:25,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 61.76190476190476) internal successors, (1297), 21 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:25,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:55:25,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:55:25,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 14:55:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:55:25,795 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:55:25,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:55:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2125548241, now seen corresponding path program 23 times [2023-08-27 14:55:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:55:25,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887315248] [2023-08-27 14:55:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:55:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:55:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:55:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:55:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:55:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887315248] [2023-08-27 14:55:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887315248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:55:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801997647] [2023-08-27 14:55:25,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 14:55:25,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:55:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:55:25,983 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:55:25,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 14:55:26,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 14:55:26,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:55:26,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 14:55:26,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:55:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:55:26,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:55:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:55:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801997647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:55:26,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:55:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 14:55:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017482000] [2023-08-27 14:55:26,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:55:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 14:55:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:55:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 14:55:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-08-27 14:55:26,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:55:26,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 2906 transitions, 79782 flow. Second operand has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:26,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:55:26,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:55:26,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:55:58,125 INFO L124 PetriNetUnfolderBase]: 15931/32135 cut-off events. [2023-08-27 14:55:58,125 INFO L125 PetriNetUnfolderBase]: For 1457152/1457152 co-relation queries the response was YES. [2023-08-27 14:55:58,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342158 conditions, 32135 events. 15931/32135 cut-off events. For 1457152/1457152 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 306548 event pairs, 471 based on Foata normal form. 195/32330 useless extension candidates. Maximal degree in co-relation 341976. Up to 11698 conditions per place. [2023-08-27 14:55:58,718 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2151 selfloop transitions, 1831 changer transitions 14/3996 dead transitions. [2023-08-27 14:55:58,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 3996 transitions, 115079 flow [2023-08-27 14:55:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-27 14:55:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-27 14:55:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3885 transitions. [2023-08-27 14:55:58,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637640449438202 [2023-08-27 14:55:58,721 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3885 transitions. [2023-08-27 14:55:58,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3885 transitions. [2023-08-27 14:55:58,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:55:58,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3885 transitions. [2023-08-27 14:55:58,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 64.75) internal successors, (3885), 60 states have internal predecessors, (3885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:58,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 178.0) internal successors, (10858), 61 states have internal predecessors, (10858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:58,728 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 178.0) internal successors, (10858), 61 states have internal predecessors, (10858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:55:58,728 INFO L175 Difference]: Start difference. First operand has 631 places, 2906 transitions, 79782 flow. Second operand 60 states and 3885 transitions. [2023-08-27 14:55:58,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 3996 transitions, 115079 flow [2023-08-27 14:56:23,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 3996 transitions, 110438 flow, removed 2293 selfloop flow, removed 14 redundant places. [2023-08-27 14:56:23,515 INFO L231 Difference]: Finished difference. Result has 681 places, 3447 transitions, 96882 flow [2023-08-27 14:56:23,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=75001, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=96882, PETRI_PLACES=681, PETRI_TRANSITIONS=3447} [2023-08-27 14:56:23,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 651 predicate places. [2023-08-27 14:56:23,518 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 3447 transitions, 96882 flow [2023-08-27 14:56:23,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:56:23,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:56:23,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:56:23,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 14:56:23,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 14:56:23,722 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:56:23,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:56:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -791272945, now seen corresponding path program 24 times [2023-08-27 14:56:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:56:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840536362] [2023-08-27 14:56:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:56:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:56:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:56:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:56:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:56:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840536362] [2023-08-27 14:56:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840536362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:56:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181784345] [2023-08-27 14:56:23,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 14:56:23,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:56:23,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:56:23,897 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:56:23,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 14:56:23,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 14:56:23,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:56:23,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 14:56:23,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:56:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:56:24,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:56:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:56:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181784345] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:56:24,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:56:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 14:56:24,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186323264] [2023-08-27 14:56:24,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:56:24,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 14:56:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:56:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 14:56:24,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-08-27 14:56:24,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:56:24,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 3447 transitions, 96882 flow. Second operand has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:56:24,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:56:24,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:56:24,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:57:01,290 INFO L124 PetriNetUnfolderBase]: 15866/31972 cut-off events. [2023-08-27 14:57:01,290 INFO L125 PetriNetUnfolderBase]: For 1545406/1545406 co-relation queries the response was YES. [2023-08-27 14:57:01,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349222 conditions, 31972 events. 15866/31972 cut-off events. For 1545406/1545406 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 303861 event pairs, 449 based on Foata normal form. 217/32189 useless extension candidates. Maximal degree in co-relation 349046. Up to 11698 conditions per place. [2023-08-27 14:57:01,973 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2077 selfloop transitions, 2164 changer transitions 26/4267 dead transitions. [2023-08-27 14:57:01,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 4267 transitions, 124123 flow [2023-08-27 14:57:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-27 14:57:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-27 14:57:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4046 transitions. [2023-08-27 14:57:01,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079900124843944 [2023-08-27 14:57:01,977 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4046 transitions. [2023-08-27 14:57:01,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4046 transitions. [2023-08-27 14:57:01,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:57:01,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4046 transitions. [2023-08-27 14:57:01,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 64.22222222222223) internal successors, (4046), 63 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:57:01,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 178.0) internal successors, (11392), 64 states have internal predecessors, (11392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:57:01,985 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 178.0) internal successors, (11392), 64 states have internal predecessors, (11392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:57:01,986 INFO L175 Difference]: Start difference. First operand has 681 places, 3447 transitions, 96882 flow. Second operand 63 states and 4046 transitions. [2023-08-27 14:57:01,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 4267 transitions, 124123 flow [2023-08-27 14:57:31,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 4267 transitions, 119794 flow, removed 1672 selfloop flow, removed 36 redundant places. [2023-08-27 14:57:31,867 INFO L231 Difference]: Finished difference. Result has 711 places, 3821 transitions, 109069 flow [2023-08-27 14:57:31,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=92720, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=109069, PETRI_PLACES=711, PETRI_TRANSITIONS=3821} [2023-08-27 14:57:31,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 681 predicate places. [2023-08-27 14:57:31,869 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 3821 transitions, 109069 flow [2023-08-27 14:57:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:57:31,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:57:31,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:57:31,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 14:57:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 14:57:32,073 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:57:32,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:57:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1461002549, now seen corresponding path program 25 times [2023-08-27 14:57:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:57:32,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746333337] [2023-08-27 14:57:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:57:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:57:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:57:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:57:32,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:57:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746333337] [2023-08-27 14:57:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746333337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:57:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867719004] [2023-08-27 14:57:32,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 14:57:32,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:57:32,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:57:32,265 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:57:32,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 14:57:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:57:32,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 14:57:32,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:57:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:57:32,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:57:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:57:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867719004] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:57:32,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:57:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-27 14:57:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914404247] [2023-08-27 14:57:32,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:57:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 14:57:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:57:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 14:57:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-08-27 14:57:32,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 14:57:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 3821 transitions, 109069 flow. Second operand has 25 states, 25 states have (on average 61.6) internal successors, (1540), 25 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:57:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:57:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 14:57:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:58:15,983 INFO L124 PetriNetUnfolderBase]: 17915/35171 cut-off events. [2023-08-27 14:58:15,983 INFO L125 PetriNetUnfolderBase]: For 1781301/1781301 co-relation queries the response was YES. [2023-08-27 14:58:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400034 conditions, 35171 events. 17915/35171 cut-off events. For 1781301/1781301 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 329306 event pairs, 1114 based on Foata normal form. 75/35246 useless extension candidates. Maximal degree in co-relation 399855. Up to 25247 conditions per place. [2023-08-27 14:58:16,969 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2923 selfloop transitions, 1690 changer transitions 22/4635 dead transitions. [2023-08-27 14:58:16,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 4635 transitions, 139638 flow [2023-08-27 14:58:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-27 14:58:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-27 14:58:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3556 transitions. [2023-08-27 14:58:16,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36322778345250256 [2023-08-27 14:58:16,972 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3556 transitions. [2023-08-27 14:58:16,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3556 transitions. [2023-08-27 14:58:16,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:58:16,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3556 transitions. [2023-08-27 14:58:16,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 64.65454545454546) internal successors, (3556), 55 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:58:16,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 178.0) internal successors, (9968), 56 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:58:16,979 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 178.0) internal successors, (9968), 56 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:58:16,979 INFO L175 Difference]: Start difference. First operand has 711 places, 3821 transitions, 109069 flow. Second operand 55 states and 3556 transitions. [2023-08-27 14:58:16,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 4635 transitions, 139638 flow [2023-08-27 14:59:02,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 4635 transitions, 136554 flow, removed 1292 selfloop flow, removed 34 redundant places. [2023-08-27 14:59:02,099 INFO L231 Difference]: Finished difference. Result has 743 places, 4443 transitions, 130527 flow [2023-08-27 14:59:02,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=106058, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=130527, PETRI_PLACES=743, PETRI_TRANSITIONS=4443} [2023-08-27 14:59:02,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 713 predicate places. [2023-08-27 14:59:02,102 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 4443 transitions, 130527 flow [2023-08-27 14:59:02,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.6) internal successors, (1540), 25 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:59:02,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:59:02,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:59:02,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 14:59:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 14:59:02,307 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 14:59:02,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:59:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 991145693, now seen corresponding path program 26 times [2023-08-27 14:59:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:59:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882091913] [2023-08-27 14:59:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:59:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:59:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:59:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:59:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:59:02,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882091913] [2023-08-27 14:59:02,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882091913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:59:02,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963777115] [2023-08-27 14:59:02,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:59:02,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:59:02,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:59:02,577 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 14:59:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 14:59:02,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 14:59:02,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:59:02,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 14:59:02,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:59:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:59:02,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:59:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:59:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963777115] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:59:03,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:59:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2023-08-27 14:59:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289337732] [2023-08-27 14:59:03,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:59:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 14:59:03,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:59:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 14:59:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-08-27 14:59:03,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 178 [2023-08-27 14:59:03,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 4443 transitions, 130527 flow. Second operand has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:59:03,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:59:03,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 178 [2023-08-27 14:59:03,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:00:01,831 INFO L124 PetriNetUnfolderBase]: 18285/37604 cut-off events. [2023-08-27 15:00:01,831 INFO L125 PetriNetUnfolderBase]: For 1749641/1749641 co-relation queries the response was YES. [2023-08-27 15:00:02,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409089 conditions, 37604 events. 18285/37604 cut-off events. For 1749641/1749641 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 373763 event pairs, 796 based on Foata normal form. 228/37832 useless extension candidates. Maximal degree in co-relation 408901. Up to 18081 conditions per place. [2023-08-27 15:00:03,034 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2985 selfloop transitions, 2003 changer transitions 30/5018 dead transitions. [2023-08-27 15:00:03,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 767 places, 5018 transitions, 156220 flow [2023-08-27 15:00:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 15:00:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 15:00:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2377 transitions. [2023-08-27 15:00:03,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3338483146067416 [2023-08-27 15:00:03,037 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2377 transitions. [2023-08-27 15:00:03,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2377 transitions. [2023-08-27 15:00:03,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:00:03,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2377 transitions. [2023-08-27 15:00:03,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 59.425) internal successors, (2377), 40 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:00:03,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:00:03,044 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:00:03,044 INFO L175 Difference]: Start difference. First operand has 743 places, 4443 transitions, 130527 flow. Second operand 40 states and 2377 transitions. [2023-08-27 15:00:03,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 767 places, 5018 transitions, 156220 flow [2023-08-27 15:00:42,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 5018 transitions, 150243 flow, removed 2500 selfloop flow, removed 32 redundant places. [2023-08-27 15:00:42,272 INFO L231 Difference]: Finished difference. Result has 740 places, 4723 transitions, 140037 flow [2023-08-27 15:00:42,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=124584, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1688, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=140037, PETRI_PLACES=740, PETRI_TRANSITIONS=4723} [2023-08-27 15:00:42,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 710 predicate places. [2023-08-27 15:00:42,276 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 4723 transitions, 140037 flow [2023-08-27 15:00:42,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:00:42,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:00:42,276 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:00:42,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 15:00:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:00:42,482 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:00:42,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:00:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 34509616, now seen corresponding path program 27 times [2023-08-27 15:00:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:00:42,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589168755] [2023-08-27 15:00:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:00:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:00:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:00:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:00:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:00:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589168755] [2023-08-27 15:00:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589168755] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:00:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975078632] [2023-08-27 15:00:42,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:00:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:00:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:00:42,761 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:00:42,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 15:00:42,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 15:00:42,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:00:42,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 15:00:42,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:00:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:00:43,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:00:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:00:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975078632] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:00:43,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:00:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 15:00:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414330016] [2023-08-27 15:00:43,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:00:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 15:00:43,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:00:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 15:00:43,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-08-27 15:00:43,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 15:00:43,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 4723 transitions, 140037 flow. Second operand has 29 states, 29 states have (on average 61.51724137931034) internal successors, (1784), 29 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:00:43,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:00:43,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 15:00:43,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:02:03,830 INFO L124 PetriNetUnfolderBase]: 23990/48248 cut-off events. [2023-08-27 15:02:03,831 INFO L125 PetriNetUnfolderBase]: For 2263849/2263849 co-relation queries the response was YES. [2023-08-27 15:02:05,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540333 conditions, 48248 events. 23990/48248 cut-off events. For 2263849/2263849 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 485359 event pairs, 1541 based on Foata normal form. 57/48305 useless extension candidates. Maximal degree in co-relation 540145. Up to 28752 conditions per place. [2023-08-27 15:02:05,893 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 3506 selfloop transitions, 3389 changer transitions 12/6907 dead transitions. [2023-08-27 15:02:05,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 6907 transitions, 215989 flow [2023-08-27 15:02:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-08-27 15:02:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-08-27 15:02:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 6489 transitions. [2023-08-27 15:02:05,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609411502948048 [2023-08-27 15:02:05,899 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 6489 transitions. [2023-08-27 15:02:05,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 6489 transitions. [2023-08-27 15:02:05,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:02:05,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 6489 transitions. [2023-08-27 15:02:05,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 64.24752475247524) internal successors, (6489), 101 states have internal predecessors, (6489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:02:05,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 178.0) internal successors, (18156), 102 states have internal predecessors, (18156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:02:05,917 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 178.0) internal successors, (18156), 102 states have internal predecessors, (18156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:02:05,917 INFO L175 Difference]: Start difference. First operand has 740 places, 4723 transitions, 140037 flow. Second operand 101 states and 6489 transitions. [2023-08-27 15:02:05,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 6907 transitions, 215989 flow [2023-08-27 15:03:11,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 6907 transitions, 204023 flow, removed 3929 selfloop flow, removed 32 redundant places. [2023-08-27 15:03:11,867 INFO L231 Difference]: Finished difference. Result has 831 places, 6448 transitions, 192170 flow [2023-08-27 15:03:11,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=130728, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1989, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=192170, PETRI_PLACES=831, PETRI_TRANSITIONS=6448} [2023-08-27 15:03:11,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 801 predicate places. [2023-08-27 15:03:11,871 INFO L495 AbstractCegarLoop]: Abstraction has has 831 places, 6448 transitions, 192170 flow [2023-08-27 15:03:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 61.51724137931034) internal successors, (1784), 29 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:03:11,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:03:11,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:03:11,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-27 15:03:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:03:12,077 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:03:12,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:03:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash 637497086, now seen corresponding path program 28 times [2023-08-27 15:03:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:03:12,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932247346] [2023-08-27 15:03:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:03:12,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:03:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:03:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:03:12,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:03:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932247346] [2023-08-27 15:03:12,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932247346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:03:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550953544] [2023-08-27 15:03:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 15:03:12,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:03:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:03:12,372 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:03:12,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 15:03:12,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 15:03:12,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:03:12,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 15:03:12,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:03:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:03:12,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:03:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:03:12,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550953544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:03:12,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:03:12,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 15:03:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456586891] [2023-08-27 15:03:12,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:03:12,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 15:03:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:03:12,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 15:03:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-08-27 15:03:12,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 15:03:12,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 6448 transitions, 192170 flow. Second operand has 29 states, 29 states have (on average 61.58620689655172) internal successors, (1786), 29 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:03:12,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:03:12,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 15:03:12,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 15:04:05,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:04:05,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:04:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-08-27 15:04:05,496 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-27 15:04:05,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 15:04:05,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-27 15:04:05,697 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 15:04:05,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 15:04:05,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 15:04:05,699 INFO L445 BasicCegarLoop]: Path program histogram: [28, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:05,703 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 15:04:05,703 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 15:04:05,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:04:05 BasicIcfg [2023-08-27 15:04:05,705 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 15:04:05,705 INFO L158 Benchmark]: Toolchain (without parser) took 804330.61ms. Allocated memory was 354.4MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 331.0MB in the beginning and 3.9GB in the end (delta: -3.6GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. [2023-08-27 15:04:05,705 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory was 332.4MB in the beginning and 332.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:04:05,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.23ms. Allocated memory is still 354.4MB. Free memory was 330.3MB in the beginning and 320.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 15:04:05,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.35ms. Allocated memory is still 354.4MB. Free memory was 320.1MB in the beginning and 318.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:04:05,706 INFO L158 Benchmark]: Boogie Preprocessor took 29.93ms. Allocated memory is still 354.4MB. Free memory was 318.0MB in the beginning and 317.3MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:04:05,706 INFO L158 Benchmark]: RCFGBuilder took 472.91ms. Allocated memory is still 354.4MB. Free memory was 316.6MB in the beginning and 297.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 15:04:05,706 INFO L158 Benchmark]: TraceAbstraction took 803562.42ms. Allocated memory was 354.4MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 297.0MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. [2023-08-27 15:04:05,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory was 332.4MB in the beginning and 332.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 217.23ms. Allocated memory is still 354.4MB. Free memory was 330.3MB in the beginning and 320.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.35ms. Allocated memory is still 354.4MB. Free memory was 320.1MB in the beginning and 318.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.93ms. Allocated memory is still 354.4MB. Free memory was 318.0MB in the beginning and 317.3MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 472.91ms. Allocated memory is still 354.4MB. Free memory was 316.6MB in the beginning and 297.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 803562.42ms. Allocated memory was 354.4MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 297.0MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 87 PlacesBefore, 30 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 975 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 935, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 410, independent: 408, independent conditional: 0, independent unconditional: 408, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 935, independent: 523, independent conditional: 0, independent unconditional: 523, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 410, unknown conditional: 0, unknown unconditional: 410] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 60/178 universal loopers) in iteration 43,while PetriNetUnfolder was constructing finite prefix that currently has 286717 conditions, 26711 events (13618/26710 cut-off events. For 732427/732427 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 271690 event pairs, 813 based on Foata normal form. 40/28017 useless extension candidates. Maximal degree in co-relation 286509. Up to 16201 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 803.4s, OverallIterations: 43, TraceHistogramMax: 10, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 768.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5481 SdHoareTripleChecker+Valid, 15.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5481 mSDsluCounter, 675 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 519 mSDsCounter, 2148 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29152 IncrementalHoareTripleChecker+Invalid, 31300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2148 mSolverCounterUnsat, 156 mSDtfsCounter, 29152 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2176 GetRequests, 540 SyntacticMatches, 25 SemanticMatches, 1611 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31061 ImplicationChecksByTransitivity, 47.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192170occurred in iteration=42, InterpolantAutomatonStates: 1252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 1114 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1502 ConstructedInterpolants, 0 QuantifiedInterpolants, 19852 SizeOfPredicates, 144 NumberOfNonLiveVariables, 4666 ConjunctsInSsa, 684 ConjunctsInUnsatCore, 115 InterpolantComputations, 10 PerfectInterpolantSequences, 27/577 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown