/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 INSUFFICIENT_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/chl-name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:17:31,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:17:31,318 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 06:17:31,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:17:31,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:17:31,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:17:31,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:17:31,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:17:31,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:17:31,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:17:31,343 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:17:31,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:17:31,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:17:31,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:17:31,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:17:31,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:17:31,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:17:31,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:17:31,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:17:31,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:17:31,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:17:31,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:17:31,351 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:17:31,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:17:31,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:17:31,355 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:17:31,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:17:31,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:17:31,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:17:31,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:17:31,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:17:31,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:17:31,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:17:31,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:17:31,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:17:31,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:17:31,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:17:31,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:17:31,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:17:31,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:17:31,692 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:17:31,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-27 06:17:32,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:17:33,102 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:17:33,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-27 06:17:33,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56cdbbf7b/b069ece6c10944b28eb83914d6ea0108/FLAG1f98c0390 [2023-08-27 06:17:33,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56cdbbf7b/b069ece6c10944b28eb83914d6ea0108 [2023-08-27 06:17:33,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:17:33,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:17:33,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:17:33,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:17:33,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:17:33,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eff973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33, skipping insertion in model container [2023-08-27 06:17:33,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,155 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:17:33,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:17:33,361 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:17:33,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:17:33,425 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:17:33,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33 WrapperNode [2023-08-27 06:17:33,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:17:33,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:17:33,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:17:33,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:17:33,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,497 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 369 [2023-08-27 06:17:33,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:17:33,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:17:33,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:17:33,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:17:33,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:17:33,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:17:33,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:17:33,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:17:33,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (1/1) ... [2023-08-27 06:17:33,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:17:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:33,599 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 06:17:33,622 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 06:17:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:17:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:17:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:17:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:17:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:17:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:17:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:17:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:17:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 06:17:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 06:17:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:17:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 06:17:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:17:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:17:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:17:33,637 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 06:17:33,735 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:17:33,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:17:34,123 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:17:34,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:17:34,136 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 06:17:34,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:34 BoogieIcfgContainer [2023-08-27 06:17:34,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:17:34,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:17:34,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:17:34,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:17:34,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:17:33" (1/3) ... [2023-08-27 06:17:34,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1638f427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:34, skipping insertion in model container [2023-08-27 06:17:34,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:33" (2/3) ... [2023-08-27 06:17:34,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1638f427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:34, skipping insertion in model container [2023-08-27 06:17:34,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:34" (3/3) ... [2023-08-27 06:17:34,176 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-08-27 06:17:34,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:17:34,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-08-27 06:17:34,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:17:34,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 06:17:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 444 transitions, 912 flow [2023-08-27 06:17:34,528 INFO L124 PetriNetUnfolderBase]: 32/441 cut-off events. [2023-08-27 06:17:34,528 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:17:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 441 events. 32/441 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-27 06:17:34,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 444 transitions, 912 flow [2023-08-27 06:17:34,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 430 transitions, 878 flow [2023-08-27 06:17:34,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:17:34,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 430 transitions, 878 flow [2023-08-27 06:17:34,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 430 transitions, 878 flow [2023-08-27 06:17:34,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 430 transitions, 878 flow [2023-08-27 06:17:34,706 INFO L124 PetriNetUnfolderBase]: 32/430 cut-off events. [2023-08-27 06:17:34,706 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:17:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 430 events. 32/430 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1255 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-27 06:17:34,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 53934 [2023-08-27 06:17:54,643 INFO L134 LiptonReduction]: Checked pairs total: 51469 [2023-08-27 06:17:54,643 INFO L136 LiptonReduction]: Total number of compositions: 551 [2023-08-27 06:17:54,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:17:54,661 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;@70481e42, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:17:54,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-27 06:17:54,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:17:54,664 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 06:17:54,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:17:54,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:54,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:17:54,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:54,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 59957, now seen corresponding path program 1 times [2023-08-27 06:17:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976991740] [2023-08-27 06:17:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:54,970 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 06:17:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976991740] [2023-08-27 06:17:54,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976991740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:54,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:54,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285253599] [2023-08-27 06:17:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:55,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:17:55,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:55,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:55,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:17:55,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:55,750 INFO L124 PetriNetUnfolderBase]: 3107/4426 cut-off events. [2023-08-27 06:17:55,751 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-27 06:17:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9076 conditions, 4426 events. 3107/4426 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 20971 event pairs, 2653 based on Foata normal form. 0/1710 useless extension candidates. Maximal degree in co-relation 8144. Up to 4426 conditions per place. [2023-08-27 06:17:55,777 INFO L140 encePairwiseOnDemand]: 981/995 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-27 06:17:55,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 190 flow [2023-08-27 06:17:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:55,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1284 transitions. [2023-08-27 06:17:55,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301507537688442 [2023-08-27 06:17:55,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1284 transitions. [2023-08-27 06:17:55,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1284 transitions. [2023-08-27 06:17:55,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:55,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1284 transitions. [2023-08-27 06:17:55,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:55,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:55,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:55,823 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 118 flow. Second operand 3 states and 1284 transitions. [2023-08-27 06:17:55,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 190 flow [2023-08-27 06:17:55,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 06:17:55,833 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-08-27 06:17:55,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-27 06:17:55,838 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-08-27 06:17:55,838 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-08-27 06:17:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:55,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:55,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:17:55,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:55,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1860375, now seen corresponding path program 1 times [2023-08-27 06:17:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788372682] [2023-08-27 06:17:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:55,950 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 06:17:55,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:55,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788372682] [2023-08-27 06:17:55,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788372682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:55,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259663053] [2023-08-27 06:17:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:55,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:55,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:55,954 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 06:17:55,981 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 06:17:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:56,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:17:56,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:56,123 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 06:17:56,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:17:56,138 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 06:17:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259663053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:17:56,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:17:56,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 06:17:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083969127] [2023-08-27 06:17:56,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:17:56,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:17:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:17:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:17:56,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:17:56,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 411.14285714285717) internal successors, (2878), 7 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:56,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:17:56,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:56,864 INFO L124 PetriNetUnfolderBase]: 3113/4435 cut-off events. [2023-08-27 06:17:56,864 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 06:17:56,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 4435 events. 3113/4435 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 20934 event pairs, 2653 based on Foata normal form. 0/1713 useless extension candidates. Maximal degree in co-relation 8911. Up to 4428 conditions per place. [2023-08-27 06:17:56,889 INFO L140 encePairwiseOnDemand]: 990/995 looper letters, 39 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2023-08-27 06:17:56,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 249 flow [2023-08-27 06:17:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:17:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:17:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2925 transitions. [2023-08-27 06:17:56,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41995692749461594 [2023-08-27 06:17:56,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2925 transitions. [2023-08-27 06:17:56,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2925 transitions. [2023-08-27 06:17:56,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:56,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2925 transitions. [2023-08-27 06:17:56,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 417.85714285714283) internal successors, (2925), 7 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 995.0) internal successors, (7960), 8 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 995.0) internal successors, (7960), 8 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,920 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 7 states and 2925 transitions. [2023-08-27 06:17:56,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 249 flow [2023-08-27 06:17:56,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 244 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:56,922 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 188 flow [2023-08-27 06:17:56,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-08-27 06:17:56,923 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-08-27 06:17:56,923 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 188 flow [2023-08-27 06:17:56,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 411.14285714285717) internal successors, (2878), 7 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:56,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 06:17:56,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 06:17:57,132 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 06:17:57,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:57,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 57673331, now seen corresponding path program 1 times [2023-08-27 06:17:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843137832] [2023-08-27 06:17:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:17:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843137832] [2023-08-27 06:17:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843137832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571198660] [2023-08-27 06:17:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:57,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:17:57,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:57,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:17:57,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:57,823 INFO L124 PetriNetUnfolderBase]: 3110/4431 cut-off events. [2023-08-27 06:17:57,823 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 06:17:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8973 conditions, 4431 events. 3110/4431 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 20909 event pairs, 2653 based on Foata normal form. 0/1717 useless extension candidates. Maximal degree in co-relation 8937. Up to 4425 conditions per place. [2023-08-27 06:17:57,848 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 42 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-08-27 06:17:57,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 257 flow [2023-08-27 06:17:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1271 transitions. [2023-08-27 06:17:57,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42579564489112226 [2023-08-27 06:17:57,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1271 transitions. [2023-08-27 06:17:57,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1271 transitions. [2023-08-27 06:17:57,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:57,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1271 transitions. [2023-08-27 06:17:57,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,863 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 188 flow. Second operand 3 states and 1271 transitions. [2023-08-27 06:17:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 257 flow [2023-08-27 06:17:57,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 236 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:57,867 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 152 flow [2023-08-27 06:17:57,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-27 06:17:57,869 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-27 06:17:57,870 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 152 flow [2023-08-27 06:17:57,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:57,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:17:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 06:17:57,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:57,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1787289796, now seen corresponding path program 1 times [2023-08-27 06:17:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006303019] [2023-08-27 06:17:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:57,949 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 06:17:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006303019] [2023-08-27 06:17:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006303019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:57,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143695932] [2023-08-27 06:17:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:57,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:17:57,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 407.6666666666667) internal successors, (1223), 3 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:57,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:57,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:17:57,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:58,601 INFO L124 PetriNetUnfolderBase]: 3109/4430 cut-off events. [2023-08-27 06:17:58,602 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-27 06:17:58,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 4430 events. 3109/4430 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21116 event pairs, 2653 based on Foata normal form. 1/1719 useless extension candidates. Maximal degree in co-relation 8935. Up to 4430 conditions per place. [2023-08-27 06:17:58,620 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-27 06:17:58,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 239 flow [2023-08-27 06:17:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1260 transitions. [2023-08-27 06:17:58,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4221105527638191 [2023-08-27 06:17:58,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1260 transitions. [2023-08-27 06:17:58,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1260 transitions. [2023-08-27 06:17:58,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:58,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1260 transitions. [2023-08-27 06:17:58,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:58,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:58,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:58,634 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 152 flow. Second operand 3 states and 1260 transitions. [2023-08-27 06:17:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 239 flow [2023-08-27 06:17:58,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:58,636 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 139 flow [2023-08-27 06:17:58,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-27 06:17:58,637 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-27 06:17:58,637 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 139 flow [2023-08-27 06:17:58,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.6666666666667) internal successors, (1223), 3 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:58,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:58,638 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 06:17:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:17:58,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:58,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -410447179, now seen corresponding path program 2 times [2023-08-27 06:17:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894092774] [2023-08-27 06:17:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:17:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894092774] [2023-08-27 06:17:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894092774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896935253] [2023-08-27 06:17:58,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:17:58,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:58,745 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 06:17:58,798 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 06:17:58,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:17:58,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:17:58,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:17:58,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:58,901 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 06:17:58,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:17:58,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896935253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:58,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:17:58,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 06:17:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926810581] [2023-08-27 06:17:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:58,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:58,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:17:58,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 995 [2023-08-27 06:17:58,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:58,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:58,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 995 [2023-08-27 06:17:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:59,508 INFO L124 PetriNetUnfolderBase]: 3109/4429 cut-off events. [2023-08-27 06:17:59,508 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-27 06:17:59,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8956 conditions, 4429 events. 3109/4429 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 20942 event pairs, 2653 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 8940. Up to 4429 conditions per place. [2023-08-27 06:17:59,529 INFO L140 encePairwiseOnDemand]: 993/995 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-27 06:17:59,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 221 flow [2023-08-27 06:17:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1273 transitions. [2023-08-27 06:17:59,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42646566164154104 [2023-08-27 06:17:59,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1273 transitions. [2023-08-27 06:17:59,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1273 transitions. [2023-08-27 06:17:59,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:59,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1273 transitions. [2023-08-27 06:17:59,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:59,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:59,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:59,542 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 139 flow. Second operand 3 states and 1273 transitions. [2023-08-27 06:17:59,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 221 flow [2023-08-27 06:17:59,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 202 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 06:17:59,543 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 112 flow [2023-08-27 06:17:59,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-27 06:17:59,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-08-27 06:17:59,544 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 112 flow [2023-08-27 06:17:59,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:59,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:59,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:17:59,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 06:17:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:59,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:17:59,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -411032397, now seen corresponding path program 1 times [2023-08-27 06:17:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254178916] [2023-08-27 06:17:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:59,803 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 06:17:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254178916] [2023-08-27 06:17:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254178916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294687822] [2023-08-27 06:17:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:59,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:17:59,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:59,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:59,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:17:59,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:00,656 INFO L124 PetriNetUnfolderBase]: 4089/5847 cut-off events. [2023-08-27 06:18:00,657 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 06:18:00,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11796 conditions, 5847 events. 4089/5847 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 30358 event pairs, 2653 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 11788. Up to 4430 conditions per place. [2023-08-27 06:18:00,680 INFO L140 encePairwiseOnDemand]: 988/995 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-27 06:18:00,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 325 flow [2023-08-27 06:18:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2023-08-27 06:18:00,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43651591289782243 [2023-08-27 06:18:00,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2023-08-27 06:18:00,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2023-08-27 06:18:00,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:00,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2023-08-27 06:18:00,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:00,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:00,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:00,692 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 112 flow. Second operand 3 states and 1303 transitions. [2023-08-27 06:18:00,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 325 flow [2023-08-27 06:18:00,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:00,694 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 131 flow [2023-08-27 06:18:00,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-27 06:18:00,694 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-27 06:18:00,694 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 131 flow [2023-08-27 06:18:00,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:00,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:00,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 06:18:00,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:00,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 142898484, now seen corresponding path program 1 times [2023-08-27 06:18:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705201143] [2023-08-27 06:18:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:00,769 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 06:18:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705201143] [2023-08-27 06:18:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705201143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957576694] [2023-08-27 06:18:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:00,772 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 06:18:00,787 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 06:18:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:00,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:18:00,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:00,921 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 06:18:00,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:00,938 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 06:18:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957576694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:00,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:00,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-27 06:18:00,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200880562] [2023-08-27 06:18:00,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:00,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:18:00,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:00,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:18:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:18:00,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:00,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 407.625) internal successors, (3261), 8 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:00,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:00,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:00,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:01,750 INFO L124 PetriNetUnfolderBase]: 4087/5845 cut-off events. [2023-08-27 06:18:01,750 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2023-08-27 06:18:01,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 5845 events. 4087/5845 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 29294 event pairs, 3531 based on Foata normal form. 2/2668 useless extension candidates. Maximal degree in co-relation 13096. Up to 5843 conditions per place. [2023-08-27 06:18:01,774 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-27 06:18:01,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 213 flow [2023-08-27 06:18:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:18:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:18:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2074 transitions. [2023-08-27 06:18:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41688442211055277 [2023-08-27 06:18:01,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2074 transitions. [2023-08-27 06:18:01,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2074 transitions. [2023-08-27 06:18:01,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2074 transitions. [2023-08-27 06:18:01,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 414.8) internal successors, (2074), 5 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:01,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 995.0) internal successors, (5970), 6 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:01,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 995.0) internal successors, (5970), 6 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:01,791 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 131 flow. Second operand 5 states and 2074 transitions. [2023-08-27 06:18:01,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 213 flow [2023-08-27 06:18:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:01,793 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 129 flow [2023-08-27 06:18:01,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-27 06:18:01,793 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-27 06:18:01,794 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 129 flow [2023-08-27 06:18:01,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 407.625) internal successors, (3261), 8 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:01,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:01,794 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:01,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 06:18:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:02,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:02,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 123535604, now seen corresponding path program 2 times [2023-08-27 06:18:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720108543] [2023-08-27 06:18:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:02,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:02,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720108543] [2023-08-27 06:18:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720108543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:02,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610764853] [2023-08-27 06:18:02,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:18:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:02,081 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 06:18:02,085 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 06:18:02,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:18:02,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:02,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:18:02,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:02,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610764853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:02,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 06:18:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793145691] [2023-08-27 06:18:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:02,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:02,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:02,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:02,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:02,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:02,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:02,921 INFO L124 PetriNetUnfolderBase]: 3305/4737 cut-off events. [2023-08-27 06:18:02,921 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2023-08-27 06:18:02,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10480 conditions, 4737 events. 3305/4737 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 22797 event pairs, 2821 based on Foata normal form. 0/2284 useless extension candidates. Maximal degree in co-relation 10470. Up to 4737 conditions per place. [2023-08-27 06:18:02,945 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-27 06:18:02,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 209 flow [2023-08-27 06:18:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1257 transitions. [2023-08-27 06:18:02,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421105527638191 [2023-08-27 06:18:02,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1257 transitions. [2023-08-27 06:18:02,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1257 transitions. [2023-08-27 06:18:02,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:02,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1257 transitions. [2023-08-27 06:18:02,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:02,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:02,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:02,956 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 129 flow. Second operand 3 states and 1257 transitions. [2023-08-27 06:18:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 209 flow [2023-08-27 06:18:02,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 201 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:18:02,958 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 117 flow [2023-08-27 06:18:02,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-27 06:18:02,960 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-08-27 06:18:02,960 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 117 flow [2023-08-27 06:18:02,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:02,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:02,961 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:02,972 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 06:18:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:03,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:03,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 123535586, now seen corresponding path program 1 times [2023-08-27 06:18:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100946149] [2023-08-27 06:18:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100946149] [2023-08-27 06:18:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100946149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:18:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141436334] [2023-08-27 06:18:03,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:18:03,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:03,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:03,699 INFO L124 PetriNetUnfolderBase]: 2623/3769 cut-off events. [2023-08-27 06:18:03,700 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-08-27 06:18:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8298 conditions, 3769 events. 2623/3769 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 17362 event pairs, 2207 based on Foata normal form. 0/1926 useless extension candidates. Maximal degree in co-relation 8288. Up to 3769 conditions per place. [2023-08-27 06:18:03,719 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-27 06:18:03,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 193 flow [2023-08-27 06:18:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1255 transitions. [2023-08-27 06:18:03,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204355108877722 [2023-08-27 06:18:03,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1255 transitions. [2023-08-27 06:18:03,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1255 transitions. [2023-08-27 06:18:03,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:03,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1255 transitions. [2023-08-27 06:18:03,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 418.3333333333333) internal successors, (1255), 3 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,731 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 117 flow. Second operand 3 states and 1255 transitions. [2023-08-27 06:18:03,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 193 flow [2023-08-27 06:18:03,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:03,733 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 112 flow [2023-08-27 06:18:03,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-27 06:18:03,735 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-08-27 06:18:03,735 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 112 flow [2023-08-27 06:18:03,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:03,735 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:03,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 06:18:03,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:03,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash 123535603, now seen corresponding path program 1 times [2023-08-27 06:18:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419205625] [2023-08-27 06:18:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:03,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419205625] [2023-08-27 06:18:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419205625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245260137] [2023-08-27 06:18:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:03,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:03,798 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 06:18:03,825 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 06:18:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:03,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:18:03,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:03,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:03,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245260137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:03,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:03,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 06:18:03,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136019550] [2023-08-27 06:18:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:03,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:03,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:03,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:03,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:03,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:03,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:03,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:04,354 INFO L124 PetriNetUnfolderBase]: 2019/2911 cut-off events. [2023-08-27 06:18:04,354 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-08-27 06:18:04,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 2911 events. 2019/2911 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12740 event pairs, 1667 based on Foata normal form. 0/1594 useless extension candidates. Maximal degree in co-relation 6363. Up to 2911 conditions per place. [2023-08-27 06:18:04,366 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-27 06:18:04,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 184 flow [2023-08-27 06:18:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1253 transitions. [2023-08-27 06:18:04,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197654941373534 [2023-08-27 06:18:04,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1253 transitions. [2023-08-27 06:18:04,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1253 transitions. [2023-08-27 06:18:04,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:04,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1253 transitions. [2023-08-27 06:18:04,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.6666666666667) internal successors, (1253), 3 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:04,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:04,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:04,378 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 112 flow. Second operand 3 states and 1253 transitions. [2023-08-27 06:18:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 184 flow [2023-08-27 06:18:04,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:04,379 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 107 flow [2023-08-27 06:18:04,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-27 06:18:04,379 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-27 06:18:04,380 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 107 flow [2023-08-27 06:18:04,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:04,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:04,380 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:04,389 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 06:18:04,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 06:18:04,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:04,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash 123535572, now seen corresponding path program 1 times [2023-08-27 06:18:04,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:04,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127242038] [2023-08-27 06:18:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:04,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:04,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:04,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127242038] [2023-08-27 06:18:04,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127242038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:04,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:04,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:18:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174857787] [2023-08-27 06:18:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:04,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:18:04,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:18:04,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 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 06:18:04,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:04,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:18:04,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:05,010 INFO L124 PetriNetUnfolderBase]: 1783/2577 cut-off events. [2023-08-27 06:18:05,010 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-08-27 06:18:05,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5602 conditions, 2577 events. 1783/2577 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10984 event pairs, 1459 based on Foata normal form. 0/1482 useless extension candidates. Maximal degree in co-relation 5590. Up to 2577 conditions per place. [2023-08-27 06:18:05,018 INFO L140 encePairwiseOnDemand]: 993/995 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 06:18:05,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 179 flow [2023-08-27 06:18:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1263 transitions. [2023-08-27 06:18:05,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42311557788944726 [2023-08-27 06:18:05,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1263 transitions. [2023-08-27 06:18:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1263 transitions. [2023-08-27 06:18:05,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:05,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1263 transitions. [2023-08-27 06:18:05,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,033 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 107 flow. Second operand 3 states and 1263 transitions. [2023-08-27 06:18:05,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 179 flow [2023-08-27 06:18:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:05,034 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 104 flow [2023-08-27 06:18:05,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-27 06:18:05,034 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-27 06:18:05,035 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 104 flow [2023-08-27 06:18:05,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 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 06:18:05,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:05,035 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 06:18:05,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:05,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash 123535606, now seen corresponding path program 1 times [2023-08-27 06:18:05,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051303118] [2023-08-27 06:18:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:05,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051303118] [2023-08-27 06:18:05,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051303118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935419190] [2023-08-27 06:18:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:05,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:05,120 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 06:18:05,139 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 06:18:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:05,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:18:05,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:05,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935419190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 06:18:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983882478] [2023-08-27 06:18:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:05,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:05,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:05,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:05,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:05,519 INFO L124 PetriNetUnfolderBase]: 1345/1953 cut-off events. [2023-08-27 06:18:05,519 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2023-08-27 06:18:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 1953 events. 1345/1953 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7838 event pairs, 1075 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 4201. Up to 1953 conditions per place. [2023-08-27 06:18:05,526 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 06:18:05,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 170 flow [2023-08-27 06:18:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2023-08-27 06:18:05,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187604690117253 [2023-08-27 06:18:05,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2023-08-27 06:18:05,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2023-08-27 06:18:05,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:05,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2023-08-27 06:18:05,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,538 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 104 flow. Second operand 3 states and 1250 transitions. [2023-08-27 06:18:05,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 170 flow [2023-08-27 06:18:05,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:05,539 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 99 flow [2023-08-27 06:18:05,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-27 06:18:05,540 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-08-27 06:18:05,540 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 99 flow [2023-08-27 06:18:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:05,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:05,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 06:18:05,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:05,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:05,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash -462553284, now seen corresponding path program 1 times [2023-08-27 06:18:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:05,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873165749] [2023-08-27 06:18:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873165749] [2023-08-27 06:18:05,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873165749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:05,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:05,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:18:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888040329] [2023-08-27 06:18:05,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:05,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:05,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:18:05,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:18:05,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:05,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:05,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:18:05,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:06,238 INFO L124 PetriNetUnfolderBase]: 1805/2629 cut-off events. [2023-08-27 06:18:06,238 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-27 06:18:06,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 2629 events. 1805/2629 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11521 event pairs, 1075 based on Foata normal form. 0/1678 useless extension candidates. Maximal degree in co-relation 5647. Up to 1954 conditions per place. [2023-08-27 06:18:06,248 INFO L140 encePairwiseOnDemand]: 990/995 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-27 06:18:06,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 265 flow [2023-08-27 06:18:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1283 transitions. [2023-08-27 06:18:06,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298157453936348 [2023-08-27 06:18:06,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1283 transitions. [2023-08-27 06:18:06,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1283 transitions. [2023-08-27 06:18:06,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:06,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1283 transitions. [2023-08-27 06:18:06,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,260 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 99 flow. Second operand 3 states and 1283 transitions. [2023-08-27 06:18:06,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 265 flow [2023-08-27 06:18:06,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:06,262 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 114 flow [2023-08-27 06:18:06,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-27 06:18:06,262 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-08-27 06:18:06,263 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 114 flow [2023-08-27 06:18:06,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:06,263 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:06,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 06:18:06,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:06,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1454248693, now seen corresponding path program 1 times [2023-08-27 06:18:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:06,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134881216] [2023-08-27 06:18:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134881216] [2023-08-27 06:18:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134881216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476532861] [2023-08-27 06:18:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:06,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:06,341 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 06:18:06,364 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 06:18:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:06,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:18:06,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:06,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476532861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:06,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 06:18:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198683826] [2023-08-27 06:18:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:06,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:06,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:06,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:06,748 INFO L124 PetriNetUnfolderBase]: 1348/1972 cut-off events. [2023-08-27 06:18:06,748 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-08-27 06:18:06,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 1972 events. 1348/1972 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7860 event pairs, 1074 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 4724. Up to 1972 conditions per place. [2023-08-27 06:18:06,754 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-27 06:18:06,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 178 flow [2023-08-27 06:18:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2023-08-27 06:18:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41809045226130653 [2023-08-27 06:18:06,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2023-08-27 06:18:06,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2023-08-27 06:18:06,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:06,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2023-08-27 06:18:06,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,766 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 114 flow. Second operand 3 states and 1248 transitions. [2023-08-27 06:18:06,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 178 flow [2023-08-27 06:18:06,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:06,767 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 108 flow [2023-08-27 06:18:06,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-27 06:18:06,768 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-27 06:18:06,768 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 108 flow [2023-08-27 06:18:06,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:06,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:06,768 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:06,777 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 06:18:06,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:06,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:06,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1454248715, now seen corresponding path program 1 times [2023-08-27 06:18:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417284946] [2023-08-27 06:18:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:07,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:07,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417284946] [2023-08-27 06:18:07,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417284946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:07,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523179130] [2023-08-27 06:18:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:07,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:07,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:07,042 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 06:18:07,044 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 06:18:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:07,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:18:07,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:07,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:07,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523179130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:07,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:07,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 06:18:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841538564] [2023-08-27 06:18:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:18:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:18:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:07,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:18:07,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:07,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:18:07,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:07,516 INFO L124 PetriNetUnfolderBase]: 1163/1707 cut-off events. [2023-08-27 06:18:07,516 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-08-27 06:18:07,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 1707 events. 1163/1707 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7307 event pairs, 88 based on Foata normal form. 0/1350 useless extension candidates. Maximal degree in co-relation 3993. Up to 919 conditions per place. [2023-08-27 06:18:07,522 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-27 06:18:07,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 322 flow [2023-08-27 06:18:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:18:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:18:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1700 transitions. [2023-08-27 06:18:07,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271356783919598 [2023-08-27 06:18:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1700 transitions. [2023-08-27 06:18:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1700 transitions. [2023-08-27 06:18:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:07,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1700 transitions. [2023-08-27 06:18:07,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,534 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 108 flow. Second operand 4 states and 1700 transitions. [2023-08-27 06:18:07,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 322 flow [2023-08-27 06:18:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:07,535 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 107 flow [2023-08-27 06:18:07,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-27 06:18:07,536 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-08-27 06:18:07,536 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 107 flow [2023-08-27 06:18:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:07,537 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:07,546 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 06:18:07,745 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,SelfDestructingSolverStorable14 [2023-08-27 06:18:07,745 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:07,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1454248741, now seen corresponding path program 1 times [2023-08-27 06:18:07,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:07,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894258240] [2023-08-27 06:18:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:18:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894258240] [2023-08-27 06:18:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894258240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:18:07,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600581114] [2023-08-27 06:18:07,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:07,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:18:07,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 995 [2023-08-27 06:18:07,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:07,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:07,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 995 [2023-08-27 06:18:07,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:08,000 INFO L124 PetriNetUnfolderBase]: 805/1191 cut-off events. [2023-08-27 06:18:08,001 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-08-27 06:18:08,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1191 events. 805/1191 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4187 event pairs, 607 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 2900. Up to 1191 conditions per place. [2023-08-27 06:18:08,004 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-27 06:18:08,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 165 flow [2023-08-27 06:18:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1245 transitions. [2023-08-27 06:18:08,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41708542713567837 [2023-08-27 06:18:08,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1245 transitions. [2023-08-27 06:18:08,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1245 transitions. [2023-08-27 06:18:08,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:08,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1245 transitions. [2023-08-27 06:18:08,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,017 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 107 flow. Second operand 3 states and 1245 transitions. [2023-08-27 06:18:08,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 165 flow [2023-08-27 06:18:08,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:18:08,019 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 100 flow [2023-08-27 06:18:08,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-27 06:18:08,019 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-08-27 06:18:08,019 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 100 flow [2023-08-27 06:18:08,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:08,020 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:08,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 06:18:08,020 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:08,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2130496261, now seen corresponding path program 1 times [2023-08-27 06:18:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:08,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112755558] [2023-08-27 06:18:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:08,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:08,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112755558] [2023-08-27 06:18:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112755558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:08,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:18:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180523550] [2023-08-27 06:18:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:08,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:18:08,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:18:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:18:08,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:18:08,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:08,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:18:08,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:08,342 INFO L124 PetriNetUnfolderBase]: 1151/1701 cut-off events. [2023-08-27 06:18:08,342 INFO L125 PetriNetUnfolderBase]: For 523/523 co-relation queries the response was YES. [2023-08-27 06:18:08,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1701 events. 1151/1701 cut-off events. For 523/523 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6694 event pairs, 607 based on Foata normal form. 0/1466 useless extension candidates. Maximal degree in co-relation 4026. Up to 1192 conditions per place. [2023-08-27 06:18:08,348 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-27 06:18:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 248 flow [2023-08-27 06:18:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:18:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:18:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1271 transitions. [2023-08-27 06:18:08,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42579564489112226 [2023-08-27 06:18:08,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1271 transitions. [2023-08-27 06:18:08,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1271 transitions. [2023-08-27 06:18:08,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:08,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1271 transitions. [2023-08-27 06:18:08,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 995.0) internal successors, (3980), 4 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,357 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 100 flow. Second operand 3 states and 1271 transitions. [2023-08-27 06:18:08,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 248 flow [2023-08-27 06:18:08,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:08,358 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 111 flow [2023-08-27 06:18:08,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-27 06:18:08,359 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-08-27 06:18:08,359 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 111 flow [2023-08-27 06:18:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:08,359 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 06:18:08,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:08,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1620872919, now seen corresponding path program 1 times [2023-08-27 06:18:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805136040] [2023-08-27 06:18:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805136040] [2023-08-27 06:18:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805136040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363478637] [2023-08-27 06:18:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:08,420 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 06:18:08,423 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 06:18:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:08,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:18:08,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:08,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:18:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363478637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:08,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:18:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 06:18:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064131003] [2023-08-27 06:18:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:18:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:18:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:18:08,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 995 [2023-08-27 06:18:08,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:08,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 995 [2023-08-27 06:18:08,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:08,900 INFO L124 PetriNetUnfolderBase]: 978/1450 cut-off events. [2023-08-27 06:18:08,900 INFO L125 PetriNetUnfolderBase]: For 643/643 co-relation queries the response was YES. [2023-08-27 06:18:08,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 1450 events. 978/1450 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5609 event pairs, 160 based on Foata normal form. 0/1449 useless extension candidates. Maximal degree in co-relation 3750. Up to 588 conditions per place. [2023-08-27 06:18:08,906 INFO L140 encePairwiseOnDemand]: 992/995 looper letters, 59 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-27 06:18:08,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 318 flow [2023-08-27 06:18:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:18:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:18:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1691 transitions. [2023-08-27 06:18:08,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248743718592965 [2023-08-27 06:18:08,912 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1691 transitions. [2023-08-27 06:18:08,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1691 transitions. [2023-08-27 06:18:08,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:08,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1691 transitions. [2023-08-27 06:18:08,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 422.75) internal successors, (1691), 4 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,919 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 111 flow. Second operand 4 states and 1691 transitions. [2023-08-27 06:18:08,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 318 flow [2023-08-27 06:18:08,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:18:08,922 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 109 flow [2023-08-27 06:18:08,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-08-27 06:18:08,923 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-08-27 06:18:08,923 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 109 flow [2023-08-27 06:18:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:08,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:08,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:08,935 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 06:18:09,129 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,SelfDestructingSolverStorable17 [2023-08-27 06:18:09,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:09,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 474618656, now seen corresponding path program 1 times [2023-08-27 06:18:09,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:09,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964804378] [2023-08-27 06:18:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964804378] [2023-08-27 06:18:09,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964804378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:09,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:18:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340210397] [2023-08-27 06:18:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:09,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:18:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:18:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:18:09,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 995 [2023-08-27 06:18:09,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 384.25) internal successors, (1537), 4 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:09,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 995 [2023-08-27 06:18:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:09,901 INFO L124 PetriNetUnfolderBase]: 978/1446 cut-off events. [2023-08-27 06:18:09,901 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2023-08-27 06:18:09,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1446 events. 978/1446 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5643 event pairs, 410 based on Foata normal form. 4/1449 useless extension candidates. Maximal degree in co-relation 3820. Up to 835 conditions per place. [2023-08-27 06:18:09,907 INFO L140 encePairwiseOnDemand]: 991/995 looper letters, 43 selfloop transitions, 2 changer transitions 19/64 dead transitions. [2023-08-27 06:18:09,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 342 flow [2023-08-27 06:18:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:18:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:18:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1570 transitions. [2023-08-27 06:18:09,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944723618090452 [2023-08-27 06:18:09,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1570 transitions. [2023-08-27 06:18:09,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1570 transitions. [2023-08-27 06:18:09,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:09,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1570 transitions. [2023-08-27 06:18:09,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 392.5) internal successors, (1570), 4 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,918 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 109 flow. Second operand 4 states and 1570 transitions. [2023-08-27 06:18:09,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 342 flow [2023-08-27 06:18:09,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:18:09,922 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 116 flow [2023-08-27 06:18:09,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-08-27 06:18:09,922 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-27 06:18:09,922 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 116 flow [2023-08-27 06:18:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.25) internal successors, (1537), 4 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:09,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:09,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 06:18:09,924 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:09,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1203221406, now seen corresponding path program 1 times [2023-08-27 06:18:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453401542] [2023-08-27 06:18:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:10,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453401542] [2023-08-27 06:18:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453401542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:18:10,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:18:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:18:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955782366] [2023-08-27 06:18:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:18:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:18:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:18:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:18:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 995 [2023-08-27 06:18:10,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 384.5) internal successors, (1538), 4 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:10,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:10,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 995 [2023-08-27 06:18:10,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:10,581 INFO L124 PetriNetUnfolderBase]: 711/1041 cut-off events. [2023-08-27 06:18:10,581 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2023-08-27 06:18:10,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1041 events. 711/1041 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3656 event pairs, 299 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 2997. Up to 632 conditions per place. [2023-08-27 06:18:10,586 INFO L140 encePairwiseOnDemand]: 991/995 looper letters, 43 selfloop transitions, 2 changer transitions 17/62 dead transitions. [2023-08-27 06:18:10,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 348 flow [2023-08-27 06:18:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:18:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:18:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1568 transitions. [2023-08-27 06:18:10,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39396984924623113 [2023-08-27 06:18:10,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1568 transitions. [2023-08-27 06:18:10,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1568 transitions. [2023-08-27 06:18:10,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:10,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1568 transitions. [2023-08-27 06:18:10,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 392.0) internal successors, (1568), 4 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:10,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:10,596 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 995.0) internal successors, (4975), 5 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:10,596 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 116 flow. Second operand 4 states and 1568 transitions. [2023-08-27 06:18:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 348 flow [2023-08-27 06:18:10,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 328 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 06:18:10,598 INFO L231 Difference]: Finished difference. Result has 51 places, 32 transitions, 118 flow [2023-08-27 06:18:10,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2023-08-27 06:18:10,599 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-27 06:18:10,599 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 118 flow [2023-08-27 06:18:10,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.5) internal successors, (1538), 4 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:10,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:10,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:10,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 06:18:10,600 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:10,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash -511016845, now seen corresponding path program 1 times [2023-08-27 06:18:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032746205] [2023-08-27 06:18:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:12,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032746205] [2023-08-27 06:18:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032746205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893959065] [2023-08-27 06:18:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:12,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:12,085 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 06:18:12,087 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 06:18:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:12,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:18:12,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:12,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 97 [2023-08-27 06:18:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:13,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:15,432 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:15,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 108 [2023-08-27 06:18:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:15,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893959065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:15,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:15,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-27 06:18:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307980788] [2023-08-27 06:18:15,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:15,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 06:18:15,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 06:18:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-08-27 06:18:15,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 995 [2023-08-27 06:18:15,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 118 flow. Second operand has 28 states, 28 states have (on average 327.32142857142856) internal successors, (9165), 28 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:15,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:15,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 995 [2023-08-27 06:18:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:27,441 INFO L124 PetriNetUnfolderBase]: 2707/4097 cut-off events. [2023-08-27 06:18:27,442 INFO L125 PetriNetUnfolderBase]: For 2894/2894 co-relation queries the response was YES. [2023-08-27 06:18:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11988 conditions, 4097 events. 2707/4097 cut-off events. For 2894/2894 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20811 event pairs, 166 based on Foata normal form. 7/4103 useless extension candidates. Maximal degree in co-relation 11967. Up to 795 conditions per place. [2023-08-27 06:18:27,459 INFO L140 encePairwiseOnDemand]: 982/995 looper letters, 405 selfloop transitions, 163 changer transitions 36/604 dead transitions. [2023-08-27 06:18:27,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 604 transitions, 3186 flow [2023-08-27 06:18:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-27 06:18:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-27 06:18:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 21695 transitions. [2023-08-27 06:18:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33544646308465403 [2023-08-27 06:18:27,487 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 21695 transitions. [2023-08-27 06:18:27,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 21695 transitions. [2023-08-27 06:18:27,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:27,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 21695 transitions. [2023-08-27 06:18:27,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 333.7692307692308) internal successors, (21695), 65 states have internal predecessors, (21695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:27,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 995.0) internal successors, (65670), 66 states have internal predecessors, (65670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:27,586 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 995.0) internal successors, (65670), 66 states have internal predecessors, (65670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:27,586 INFO L175 Difference]: Start difference. First operand has 51 places, 32 transitions, 118 flow. Second operand 65 states and 21695 transitions. [2023-08-27 06:18:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 604 transitions, 3186 flow [2023-08-27 06:18:27,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 604 transitions, 3088 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-27 06:18:27,597 INFO L231 Difference]: Finished difference. Result has 154 places, 213 transitions, 1493 flow [2023-08-27 06:18:27,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1493, PETRI_PLACES=154, PETRI_TRANSITIONS=213} [2023-08-27 06:18:27,598 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2023-08-27 06:18:27,598 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 213 transitions, 1493 flow [2023-08-27 06:18:27,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 327.32142857142856) internal successors, (9165), 28 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:27,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:27,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:27,606 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 06:18:27,806 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,SelfDestructingSolverStorable20 [2023-08-27 06:18:27,806 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:27,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1961430947, now seen corresponding path program 2 times [2023-08-27 06:18:27,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120817562] [2023-08-27 06:18:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:18:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120817562] [2023-08-27 06:18:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120817562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534890329] [2023-08-27 06:18:29,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:18:29,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:29,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:29,788 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 06:18:29,789 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 06:18:29,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:18:29,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:29,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 06:18:29,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:30,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:18:30,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2023-08-27 06:18:30,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 72 [2023-08-27 06:18:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:31,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:32,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:32,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 119 [2023-08-27 06:18:32,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-27 06:18:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534890329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:32,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 33 [2023-08-27 06:18:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146192477] [2023-08-27 06:18:32,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:32,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 06:18:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 06:18:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2023-08-27 06:18:32,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 995 [2023-08-27 06:18:32,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 213 transitions, 1493 flow. Second operand has 35 states, 35 states have (on average 315.0285714285714) internal successors, (11026), 35 states have internal predecessors, (11026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:32,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:32,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 995 [2023-08-27 06:18:32,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:38,889 INFO L124 PetriNetUnfolderBase]: 4340/6808 cut-off events. [2023-08-27 06:18:38,889 INFO L125 PetriNetUnfolderBase]: For 216392/216392 co-relation queries the response was YES. [2023-08-27 06:18:38,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51729 conditions, 6808 events. 4340/6808 cut-off events. For 216392/216392 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 40629 event pairs, 619 based on Foata normal form. 8/6815 useless extension candidates. Maximal degree in co-relation 51665. Up to 2186 conditions per place. [2023-08-27 06:18:38,945 INFO L140 encePairwiseOnDemand]: 982/995 looper letters, 284 selfloop transitions, 127 changer transitions 69/480 dead transitions. [2023-08-27 06:18:38,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 480 transitions, 4990 flow [2023-08-27 06:18:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:18:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:18:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7397 transitions. [2023-08-27 06:18:38,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32322481975092854 [2023-08-27 06:18:38,954 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7397 transitions. [2023-08-27 06:18:38,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7397 transitions. [2023-08-27 06:18:38,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:38,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7397 transitions. [2023-08-27 06:18:38,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 321.60869565217394) internal successors, (7397), 23 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:38,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 995.0) internal successors, (23880), 24 states have internal predecessors, (23880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:38,978 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 995.0) internal successors, (23880), 24 states have internal predecessors, (23880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:38,978 INFO L175 Difference]: Start difference. First operand has 154 places, 213 transitions, 1493 flow. Second operand 23 states and 7397 transitions. [2023-08-27 06:18:38,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 480 transitions, 4990 flow [2023-08-27 06:18:39,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 480 transitions, 4546 flow, removed 199 selfloop flow, removed 7 redundant places. [2023-08-27 06:18:39,350 INFO L231 Difference]: Finished difference. Result has 178 places, 263 transitions, 2215 flow [2023-08-27 06:18:39,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2215, PETRI_PLACES=178, PETRI_TRANSITIONS=263} [2023-08-27 06:18:39,350 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 122 predicate places. [2023-08-27 06:18:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 263 transitions, 2215 flow [2023-08-27 06:18:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 315.0285714285714) internal successors, (11026), 35 states have internal predecessors, (11026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:39,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:39,352 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:39,358 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 06:18:39,552 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,SelfDestructingSolverStorable21 [2023-08-27 06:18:39,553 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:39,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1201210687, now seen corresponding path program 3 times [2023-08-27 06:18:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955665595] [2023-08-27 06:18:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955665595] [2023-08-27 06:18:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955665595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179317547] [2023-08-27 06:18:40,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:18:40,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:40,761 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 06:18:40,773 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 06:18:40,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:18:40,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:40,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 06:18:40,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:18:41,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2023-08-27 06:18:41,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 85 [2023-08-27 06:18:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:41,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:43,437 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:43,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 95 [2023-08-27 06:18:43,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 06:18:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179317547] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:43,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:43,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2023-08-27 06:18:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549449854] [2023-08-27 06:18:43,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 06:18:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 06:18:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=942, Unknown=1, NotChecked=0, Total=1056 [2023-08-27 06:18:43,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 995 [2023-08-27 06:18:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 263 transitions, 2215 flow. Second operand has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 995 [2023-08-27 06:18:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:54,109 INFO L124 PetriNetUnfolderBase]: 7325/11415 cut-off events. [2023-08-27 06:18:54,109 INFO L125 PetriNetUnfolderBase]: For 529040/529040 co-relation queries the response was YES. [2023-08-27 06:18:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101203 conditions, 11415 events. 7325/11415 cut-off events. For 529040/529040 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 73130 event pairs, 743 based on Foata normal form. 44/11409 useless extension candidates. Maximal degree in co-relation 101131. Up to 3136 conditions per place. [2023-08-27 06:18:54,213 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 398 selfloop transitions, 260 changer transitions 223/881 dead transitions. [2023-08-27 06:18:54,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 881 transitions, 12418 flow [2023-08-27 06:18:54,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 06:18:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 06:18:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 15459 transitions. [2023-08-27 06:18:54,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33056773227841335 [2023-08-27 06:18:54,227 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 15459 transitions. [2023-08-27 06:18:54,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 15459 transitions. [2023-08-27 06:18:54,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:54,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 15459 transitions. [2023-08-27 06:18:54,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 328.9148936170213) internal successors, (15459), 47 states have internal predecessors, (15459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:54,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:54,297 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:54,297 INFO L175 Difference]: Start difference. First operand has 178 places, 263 transitions, 2215 flow. Second operand 47 states and 15459 transitions. [2023-08-27 06:18:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 881 transitions, 12418 flow [2023-08-27 06:18:55,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 881 transitions, 10599 flow, removed 836 selfloop flow, removed 8 redundant places. [2023-08-27 06:18:55,879 INFO L231 Difference]: Finished difference. Result has 242 places, 391 transitions, 4378 flow [2023-08-27 06:18:55,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4378, PETRI_PLACES=242, PETRI_TRANSITIONS=391} [2023-08-27 06:18:55,880 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 186 predicate places. [2023-08-27 06:18:55,880 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 391 transitions, 4378 flow [2023-08-27 06:18:55,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:55,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:55,882 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:55,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 06:18:56,091 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,SelfDestructingSolverStorable22 [2023-08-27 06:18:56,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:18:56,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1277171043, now seen corresponding path program 4 times [2023-08-27 06:18:56,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:56,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712672534] [2023-08-27 06:18:56,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:56,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:57,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712672534] [2023-08-27 06:18:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712672534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18714901] [2023-08-27 06:18:57,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:18:57,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:57,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:57,316 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 06:18:57,318 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 06:18:57,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:18:57,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:57,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 06:18:57,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:57,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:18:57,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2023-08-27 06:18:58,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 132 [2023-08-27 06:18:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:18:58,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:00,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:00,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 514 treesize of output 342 [2023-08-27 06:19:00,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 300 [2023-08-27 06:19:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:01,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18714901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:01,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2023-08-27 06:19:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107523079] [2023-08-27 06:19:01,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 06:19:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 06:19:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=953, Unknown=1, NotChecked=0, Total=1056 [2023-08-27 06:19:01,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 995 [2023-08-27 06:19:01,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 391 transitions, 4378 flow. Second operand has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:01,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:01,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 995 [2023-08-27 06:19:01,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:20,955 INFO L124 PetriNetUnfolderBase]: 12005/19448 cut-off events. [2023-08-27 06:19:20,956 INFO L125 PetriNetUnfolderBase]: For 1361665/1361665 co-relation queries the response was YES. [2023-08-27 06:19:21,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203253 conditions, 19448 events. 12005/19448 cut-off events. For 1361665/1361665 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 143822 event pairs, 873 based on Foata normal form. 21/19419 useless extension candidates. Maximal degree in co-relation 203152. Up to 5695 conditions per place. [2023-08-27 06:19:21,190 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 523 selfloop transitions, 713 changer transitions 95/1331 dead transitions. [2023-08-27 06:19:21,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1331 transitions, 20644 flow [2023-08-27 06:19:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-08-27 06:19:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-08-27 06:19:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 23343 transitions. [2023-08-27 06:19:21,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33042678179630547 [2023-08-27 06:19:21,213 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 23343 transitions. [2023-08-27 06:19:21,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 23343 transitions. [2023-08-27 06:19:21,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:21,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 23343 transitions. [2023-08-27 06:19:21,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 328.77464788732397) internal successors, (23343), 71 states have internal predecessors, (23343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:21,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 995.0) internal successors, (71640), 72 states have internal predecessors, (71640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:21,453 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 995.0) internal successors, (71640), 72 states have internal predecessors, (71640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:21,453 INFO L175 Difference]: Start difference. First operand has 242 places, 391 transitions, 4378 flow. Second operand 71 states and 23343 transitions. [2023-08-27 06:19:21,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1331 transitions, 20644 flow [2023-08-27 06:19:25,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1331 transitions, 16284 flow, removed 2148 selfloop flow, removed 27 redundant places. [2023-08-27 06:19:25,895 INFO L231 Difference]: Finished difference. Result has 291 places, 894 transitions, 13682 flow [2023-08-27 06:19:25,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=13682, PETRI_PLACES=291, PETRI_TRANSITIONS=894} [2023-08-27 06:19:25,896 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 235 predicate places. [2023-08-27 06:19:25,896 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 894 transitions, 13682 flow [2023-08-27 06:19:25,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:25,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:25,898 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:25,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 06:19:26,103 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,SelfDestructingSolverStorable23 [2023-08-27 06:19:26,103 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:19:26,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:26,104 INFO L85 PathProgramCache]: Analyzing trace with hash 420404043, now seen corresponding path program 5 times [2023-08-27 06:19:26,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:26,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885363633] [2023-08-27 06:19:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885363633] [2023-08-27 06:19:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885363633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615989461] [2023-08-27 06:19:27,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:19:27,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:27,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:27,289 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 06:19:27,318 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 06:19:27,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:19:27,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:27,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:19:27,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:27,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 131 [2023-08-27 06:19:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:28,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:29,547 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:29,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 83 [2023-08-27 06:19:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:30,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615989461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:30,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-08-27 06:19:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621507613] [2023-08-27 06:19:30,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:30,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 06:19:30,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 06:19:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-08-27 06:19:30,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 995 [2023-08-27 06:19:30,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 894 transitions, 13682 flow. Second operand has 28 states, 28 states have (on average 327.14285714285717) internal successors, (9160), 28 states have internal predecessors, (9160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 995 [2023-08-27 06:19:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:41,602 INFO L124 PetriNetUnfolderBase]: 14166/23579 cut-off events. [2023-08-27 06:19:41,602 INFO L125 PetriNetUnfolderBase]: For 1048385/1048385 co-relation queries the response was YES. [2023-08-27 06:19:41,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220258 conditions, 23579 events. 14166/23579 cut-off events. For 1048385/1048385 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 185111 event pairs, 1235 based on Foata normal form. 14/23581 useless extension candidates. Maximal degree in co-relation 220147. Up to 9958 conditions per place. [2023-08-27 06:19:42,025 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 1085 selfloop transitions, 725 changer transitions 37/1847 dead transitions. [2023-08-27 06:19:42,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1847 transitions, 30503 flow [2023-08-27 06:19:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 06:19:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 06:19:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 10646 transitions. [2023-08-27 06:19:42,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343592964824121 [2023-08-27 06:19:42,036 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 10646 transitions. [2023-08-27 06:19:42,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 10646 transitions. [2023-08-27 06:19:42,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:42,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 10646 transitions. [2023-08-27 06:19:42,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 332.6875) internal successors, (10646), 32 states have internal predecessors, (10646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:42,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 995.0) internal successors, (32835), 33 states have internal predecessors, (32835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:42,070 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 995.0) internal successors, (32835), 33 states have internal predecessors, (32835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:42,070 INFO L175 Difference]: Start difference. First operand has 291 places, 894 transitions, 13682 flow. Second operand 32 states and 10646 transitions. [2023-08-27 06:19:42,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1847 transitions, 30503 flow [2023-08-27 06:19:59,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1847 transitions, 22735 flow, removed 3474 selfloop flow, removed 12 redundant places. [2023-08-27 06:19:59,754 INFO L231 Difference]: Finished difference. Result has 327 places, 1365 transitions, 17806 flow [2023-08-27 06:19:59,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=9269, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=17806, PETRI_PLACES=327, PETRI_TRANSITIONS=1365} [2023-08-27 06:19:59,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 271 predicate places. [2023-08-27 06:19:59,755 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1365 transitions, 17806 flow [2023-08-27 06:19:59,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 327.14285714285717) internal successors, (9160), 28 states have internal predecessors, (9160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:59,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:59,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:59,761 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 06:19:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:59,956 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:19:59,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash -211411827, now seen corresponding path program 6 times [2023-08-27 06:19:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:59,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808503786] [2023-08-27 06:19:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:59,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808503786] [2023-08-27 06:20:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808503786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825479246] [2023-08-27 06:20:01,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:20:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:01,133 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 06:20:01,135 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 06:20:01,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:20:01,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:01,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 06:20:01,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:01,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 139 [2023-08-27 06:20:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:02,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:03,211 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:03,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 100 [2023-08-27 06:20:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825479246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:03,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-08-27 06:20:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333490011] [2023-08-27 06:20:03,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:20:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:20:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:20:03,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 995 [2023-08-27 06:20:03,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1365 transitions, 17806 flow. Second operand has 24 states, 24 states have (on average 331.5833333333333) internal successors, (7958), 24 states have internal predecessors, (7958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:03,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:03,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 995 [2023-08-27 06:20:03,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:27,552 INFO L124 PetriNetUnfolderBase]: 21945/37816 cut-off events. [2023-08-27 06:20:27,552 INFO L125 PetriNetUnfolderBase]: For 738994/738994 co-relation queries the response was YES. [2023-08-27 06:20:28,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280924 conditions, 37816 events. 21945/37816 cut-off events. For 738994/738994 co-relation queries the response was YES. Maximal size of possible extension queue 2063. Compared 332234 event pairs, 3600 based on Foata normal form. 64/37864 useless extension candidates. Maximal degree in co-relation 280800. Up to 9909 conditions per place. [2023-08-27 06:20:28,467 INFO L140 encePairwiseOnDemand]: 982/995 looper letters, 1543 selfloop transitions, 1173 changer transitions 206/2922 dead transitions. [2023-08-27 06:20:28,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 2922 transitions, 46526 flow [2023-08-27 06:20:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-27 06:20:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-27 06:20:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 22972 transitions. [2023-08-27 06:20:28,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3395211350872007 [2023-08-27 06:20:28,486 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 22972 transitions. [2023-08-27 06:20:28,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 22972 transitions. [2023-08-27 06:20:28,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:28,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 22972 transitions. [2023-08-27 06:20:28,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 337.8235294117647) internal successors, (22972), 68 states have internal predecessors, (22972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:28,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 995.0) internal successors, (68655), 69 states have internal predecessors, (68655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:28,560 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 995.0) internal successors, (68655), 69 states have internal predecessors, (68655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:28,560 INFO L175 Difference]: Start difference. First operand has 327 places, 1365 transitions, 17806 flow. Second operand 68 states and 22972 transitions. [2023-08-27 06:20:28,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 2922 transitions, 46526 flow [2023-08-27 06:20:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 2922 transitions, 42239 flow, removed 1897 selfloop flow, removed 5 redundant places. [2023-08-27 06:20:48,721 INFO L231 Difference]: Finished difference. Result has 433 places, 1842 transitions, 26429 flow [2023-08-27 06:20:48,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=16250, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=735, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=26429, PETRI_PLACES=433, PETRI_TRANSITIONS=1842} [2023-08-27 06:20:48,723 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 377 predicate places. [2023-08-27 06:20:48,723 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1842 transitions, 26429 flow [2023-08-27 06:20:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 331.5833333333333) internal successors, (7958), 24 states have internal predecessors, (7958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:48,724 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:48,729 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 06:20:48,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 06:20:48,924 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:20:48,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1310469675, now seen corresponding path program 7 times [2023-08-27 06:20:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526690277] [2023-08-27 06:20:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:49,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526690277] [2023-08-27 06:20:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526690277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026391642] [2023-08-27 06:20:49,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:20:49,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:49,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:49,915 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 06:20:49,916 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 06:20:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:50,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 06:20:50,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:50,347 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 100 [2023-08-27 06:20:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:50,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:51,474 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:51,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 127 [2023-08-27 06:20:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:51,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026391642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:51,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:51,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-08-27 06:20:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48867587] [2023-08-27 06:20:51,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:51,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:20:51,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:20:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:20:51,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 995 [2023-08-27 06:20:51,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1842 transitions, 26429 flow. Second operand has 24 states, 24 states have (on average 331.5) internal successors, (7956), 24 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:51,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 995 [2023-08-27 06:20:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:21:15,842 INFO L124 PetriNetUnfolderBase]: 23510/39852 cut-off events. [2023-08-27 06:21:15,843 INFO L125 PetriNetUnfolderBase]: For 748779/748779 co-relation queries the response was YES. [2023-08-27 06:21:17,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290866 conditions, 39852 events. 23510/39852 cut-off events. For 748779/748779 co-relation queries the response was YES. Maximal size of possible extension queue 2171. Compared 344188 event pairs, 4101 based on Foata normal form. 45/39763 useless extension candidates. Maximal degree in co-relation 290697. Up to 13451 conditions per place. [2023-08-27 06:21:17,313 INFO L140 encePairwiseOnDemand]: 982/995 looper letters, 1571 selfloop transitions, 1126 changer transitions 127/2824 dead transitions. [2023-08-27 06:21:17,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 2824 transitions, 46699 flow [2023-08-27 06:21:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 06:21:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 06:21:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 15886 transitions. [2023-08-27 06:21:17,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33969849246231154 [2023-08-27 06:21:17,322 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 15886 transitions. [2023-08-27 06:21:17,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 15886 transitions. [2023-08-27 06:21:17,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:21:17,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 15886 transitions. [2023-08-27 06:21:17,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 338.0) internal successors, (15886), 47 states have internal predecessors, (15886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:17,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:17,546 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:17,546 INFO L175 Difference]: Start difference. First operand has 433 places, 1842 transitions, 26429 flow. Second operand 47 states and 15886 transitions. [2023-08-27 06:21:17,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 2824 transitions, 46699 flow [2023-08-27 06:21:38,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 2824 transitions, 44389 flow, removed 1152 selfloop flow, removed 14 redundant places. [2023-08-27 06:21:38,889 INFO L231 Difference]: Finished difference. Result has 475 places, 2058 transitions, 30934 flow [2023-08-27 06:21:38,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=24899, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=895, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=30934, PETRI_PLACES=475, PETRI_TRANSITIONS=2058} [2023-08-27 06:21:38,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 419 predicate places. [2023-08-27 06:21:38,891 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 2058 transitions, 30934 flow [2023-08-27 06:21:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 331.5) internal successors, (7956), 24 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:38,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:21:38,892 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:21:38,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 06:21:39,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 06:21:39,099 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:21:39,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:21:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1764317903, now seen corresponding path program 8 times [2023-08-27 06:21:39,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:21:39,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220329888] [2023-08-27 06:21:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:21:39,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:21:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:21:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220329888] [2023-08-27 06:21:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220329888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:21:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646475659] [2023-08-27 06:21:39,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:21:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:21:39,825 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 06:21:39,826 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 06:21:40,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:21:40,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:21:40,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 06:21:40,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:21:40,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 143 [2023-08-27 06:21:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:41,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:21:42,571 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:42,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 137 [2023-08-27 06:21:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:42,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646475659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:21:42,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:21:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 24 [2023-08-27 06:21:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495319303] [2023-08-27 06:21:42,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:21:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:21:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:21:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:21:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-08-27 06:21:42,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 995 [2023-08-27 06:21:42,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 2058 transitions, 30934 flow. Second operand has 25 states, 25 states have (on average 327.44) internal successors, (8186), 25 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:42,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:21:42,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 995 [2023-08-27 06:21:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:22:12,917 INFO L124 PetriNetUnfolderBase]: 30346/52700 cut-off events. [2023-08-27 06:22:12,917 INFO L125 PetriNetUnfolderBase]: For 1050681/1050681 co-relation queries the response was YES. [2023-08-27 06:22:15,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390124 conditions, 52700 events. 30346/52700 cut-off events. For 1050681/1050681 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 490076 event pairs, 6297 based on Foata normal form. 117/52681 useless extension candidates. Maximal degree in co-relation 389945. Up to 21617 conditions per place. [2023-08-27 06:22:15,261 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 1972 selfloop transitions, 1042 changer transitions 399/3413 dead transitions. [2023-08-27 06:22:15,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 3413 transitions, 58338 flow [2023-08-27 06:22:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 06:22:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 06:22:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 12026 transitions. [2023-08-27 06:22:15,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33573422668900055 [2023-08-27 06:22:15,267 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 12026 transitions. [2023-08-27 06:22:15,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 12026 transitions. [2023-08-27 06:22:15,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:22:15,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 12026 transitions. [2023-08-27 06:22:15,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 334.05555555555554) internal successors, (12026), 36 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:15,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 995.0) internal successors, (36815), 37 states have internal predecessors, (36815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:15,290 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 995.0) internal successors, (36815), 37 states have internal predecessors, (36815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:15,291 INFO L175 Difference]: Start difference. First operand has 475 places, 2058 transitions, 30934 flow. Second operand 36 states and 12026 transitions. [2023-08-27 06:22:15,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 3413 transitions, 58338 flow [2023-08-27 06:22:47,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 3413 transitions, 56734 flow, removed 459 selfloop flow, removed 12 redundant places. [2023-08-27 06:22:48,019 INFO L231 Difference]: Finished difference. Result has 518 places, 2393 transitions, 38146 flow [2023-08-27 06:22:48,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=29618, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=38146, PETRI_PLACES=518, PETRI_TRANSITIONS=2393} [2023-08-27 06:22:48,021 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 462 predicate places. [2023-08-27 06:22:48,022 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 2393 transitions, 38146 flow [2023-08-27 06:22:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 327.44) internal successors, (8186), 25 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:48,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:22:48,023 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:22:48,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 06:22:48,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 06:22:48,229 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:22:48,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:22:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash 953177571, now seen corresponding path program 9 times [2023-08-27 06:22:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:22:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707639889] [2023-08-27 06:22:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:22:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:22:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:22:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:49,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:22:49,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707639889] [2023-08-27 06:22:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707639889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:22:49,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814693593] [2023-08-27 06:22:49,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:22:49,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:22:49,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:22:49,142 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 06:22:49,143 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 06:22:49,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:22:49,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:22:49,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 06:22:49,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:22:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:22:49,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2023-08-27 06:22:49,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 125 [2023-08-27 06:22:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:50,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:22:52,660 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:22:52,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 187 [2023-08-27 06:22:52,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 95 [2023-08-27 06:22:52,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2023-08-27 06:22:52,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 83 [2023-08-27 06:22:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:53,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814693593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:22:53,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:22:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2023-08-27 06:22:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927864677] [2023-08-27 06:22:53,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:22:53,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 06:22:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:22:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 06:22:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=941, Unknown=2, NotChecked=0, Total=1056 [2023-08-27 06:22:53,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 995 [2023-08-27 06:22:53,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 2393 transitions, 38146 flow. Second operand has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:53,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:22:53,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 995 [2023-08-27 06:22:53,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:23:40,042 INFO L124 PetriNetUnfolderBase]: 32658/56708 cut-off events. [2023-08-27 06:23:40,042 INFO L125 PetriNetUnfolderBase]: For 1196512/1196512 co-relation queries the response was YES. [2023-08-27 06:23:43,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430350 conditions, 56708 events. 32658/56708 cut-off events. For 1196512/1196512 co-relation queries the response was YES. Maximal size of possible extension queue 3122. Compared 532034 event pairs, 6482 based on Foata normal form. 20/56592 useless extension candidates. Maximal degree in co-relation 430148. Up to 23965 conditions per place. [2023-08-27 06:23:43,266 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 2038 selfloop transitions, 1329 changer transitions 71/3438 dead transitions. [2023-08-27 06:23:43,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 3438 transitions, 60571 flow [2023-08-27 06:23:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 06:23:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 06:23:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 15505 transitions. [2023-08-27 06:23:43,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33155137389073025 [2023-08-27 06:23:43,274 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 15505 transitions. [2023-08-27 06:23:43,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 15505 transitions. [2023-08-27 06:23:43,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:23:43,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 15505 transitions. [2023-08-27 06:23:43,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 329.8936170212766) internal successors, (15505), 47 states have internal predecessors, (15505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:43,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:43,308 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 995.0) internal successors, (47760), 48 states have internal predecessors, (47760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:43,308 INFO L175 Difference]: Start difference. First operand has 518 places, 2393 transitions, 38146 flow. Second operand 47 states and 15505 transitions. [2023-08-27 06:23:43,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 3438 transitions, 60571 flow [2023-08-27 06:24:27,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 3438 transitions, 58936 flow, removed 799 selfloop flow, removed 21 redundant places. [2023-08-27 06:24:27,567 INFO L231 Difference]: Finished difference. Result has 555 places, 2705 transitions, 46237 flow [2023-08-27 06:24:27,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=37215, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=46237, PETRI_PLACES=555, PETRI_TRANSITIONS=2705} [2023-08-27 06:24:27,569 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 499 predicate places. [2023-08-27 06:24:27,569 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 2705 transitions, 46237 flow [2023-08-27 06:24:27,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 323.09090909090907) internal successors, (10662), 33 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:27,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:24:27,571 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:24:27,577 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 06:24:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 06:24:27,772 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:24:27,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:24:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash -887125075, now seen corresponding path program 10 times [2023-08-27 06:24:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:24:27,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341697321] [2023-08-27 06:24:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:24:27,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:24:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:24:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:28,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:24:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341697321] [2023-08-27 06:24:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341697321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:24:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7733447] [2023-08-27 06:24:28,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:24:28,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:24:28,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:24:28,706 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 06:24:28,707 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 06:24:28,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:24:28,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:24:28,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 06:24:28,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:24:29,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:24:29,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2023-08-27 06:24:29,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 139 [2023-08-27 06:24:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:29,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:24:30,940 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:24:30,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 161 [2023-08-27 06:24:30,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 56 [2023-08-27 06:24:30,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2023-08-27 06:24:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7733447] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:24:31,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:24:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 06:24:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203604868] [2023-08-27 06:24:31,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:24:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:24:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:24:31,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:24:31,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=709, Unknown=1, NotChecked=0, Total=812 [2023-08-27 06:24:31,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 995 [2023-08-27 06:24:31,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 2705 transitions, 46237 flow. Second operand has 29 states, 29 states have (on average 339.37931034482756) internal successors, (9842), 29 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:31,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:24:31,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 995 [2023-08-27 06:24:31,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:25:17,732 INFO L124 PetriNetUnfolderBase]: 36657/64132 cut-off events. [2023-08-27 06:25:17,733 INFO L125 PetriNetUnfolderBase]: For 1493340/1493340 co-relation queries the response was YES. [2023-08-27 06:25:21,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496616 conditions, 64132 events. 36657/64132 cut-off events. For 1493340/1493340 co-relation queries the response was YES. Maximal size of possible extension queue 3575. Compared 617868 event pairs, 7312 based on Foata normal form. 82/64078 useless extension candidates. Maximal degree in co-relation 496401. Up to 23639 conditions per place. [2023-08-27 06:25:21,614 INFO L140 encePairwiseOnDemand]: 986/995 looper letters, 1622 selfloop transitions, 1706 changer transitions 329/3657 dead transitions. [2023-08-27 06:25:21,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 3657 transitions, 68650 flow [2023-08-27 06:25:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 06:25:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 06:25:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 10069 transitions. [2023-08-27 06:25:21,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489516548258534 [2023-08-27 06:25:21,620 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 10069 transitions. [2023-08-27 06:25:21,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 10069 transitions. [2023-08-27 06:25:21,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:25:21,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 10069 transitions. [2023-08-27 06:25:21,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 347.2068965517241) internal successors, (10069), 29 states have internal predecessors, (10069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 995.0) internal successors, (29850), 30 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,639 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 995.0) internal successors, (29850), 30 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,639 INFO L175 Difference]: Start difference. First operand has 555 places, 2705 transitions, 46237 flow. Second operand 29 states and 10069 transitions. [2023-08-27 06:25:21,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 3657 transitions, 68650 flow [2023-08-27 06:26:22,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 3657 transitions, 67347 flow, removed 633 selfloop flow, removed 8 redundant places. [2023-08-27 06:26:22,578 INFO L231 Difference]: Finished difference. Result has 585 places, 2842 transitions, 52809 flow [2023-08-27 06:26:22,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=995, PETRI_DIFFERENCE_MINUEND_FLOW=45026, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=52809, PETRI_PLACES=585, PETRI_TRANSITIONS=2842} [2023-08-27 06:26:22,580 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 529 predicate places. [2023-08-27 06:26:22,580 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 2842 transitions, 52809 flow [2023-08-27 06:26:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 339.37931034482756) internal successors, (9842), 29 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:22,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:26:22,582 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:26:22,591 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 06:26:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:22,788 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 06:26:22,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:26:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1036470673, now seen corresponding path program 1 times [2023-08-27 06:26:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:26:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079946365] [2023-08-27 06:26:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:26:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:26:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:26:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:23,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:26:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079946365] [2023-08-27 06:26:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079946365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:26:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105199277] [2023-08-27 06:26:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:26:23,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:23,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:26:23,567 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 06:26:23,568 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 06:26:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:26:23,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-27 06:26:23,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:26:23,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 06:26:24,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 113 [2023-08-27 06:26:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:24,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:26:25,974 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:26:25,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 114 [2023-08-27 06:26:25,983 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:26:25,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 100 [2023-08-27 06:26:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:26,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105199277] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:26:26,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:26:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 25 [2023-08-27 06:26:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044213145] [2023-08-27 06:26:26,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:26:26,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:26:26,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:26:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:26:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2023-08-27 06:26:26,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 995 [2023-08-27 06:26:26,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 2842 transitions, 52809 flow. Second operand has 26 states, 26 states have (on average 323.7692307692308) internal successors, (8418), 26 states have internal predecessors, (8418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:26,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:26:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 995 [2023-08-27 06:26:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:28:15,477 INFO L124 PetriNetUnfolderBase]: 59580/105170 cut-off events. [2023-08-27 06:28:15,478 INFO L125 PetriNetUnfolderBase]: For 2568331/2568331 co-relation queries the response was YES. [2023-08-27 06:28:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817782 conditions, 105170 events. 59580/105170 cut-off events. For 2568331/2568331 co-relation queries the response was YES. Maximal size of possible extension queue 5864. Compared 1099530 event pairs, 4225 based on Foata normal form. 522/105522 useless extension candidates. Maximal degree in co-relation 817556. Up to 22484 conditions per place. [2023-08-27 06:28:22,374 INFO L140 encePairwiseOnDemand]: 983/995 looper letters, 2288 selfloop transitions, 4469 changer transitions 618/7375 dead transitions. [2023-08-27 06:28:22,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 7375 transitions, 144440 flow [2023-08-27 06:28:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2023-08-27 06:28:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2023-08-27 06:28:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 53490 transitions. [2023-08-27 06:28:22,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32980855196226533 [2023-08-27 06:28:22,400 INFO L72 ComplementDD]: Start complementDD. Operand 163 states and 53490 transitions. [2023-08-27 06:28:22,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 53490 transitions. [2023-08-27 06:28:22,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:28:22,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 163 states and 53490 transitions. [2023-08-27 06:28:22,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 164 states, 163 states have (on average 328.159509202454) internal successors, (53490), 163 states have internal predecessors, (53490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:22,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 164 states, 164 states have (on average 995.0) internal successors, (163180), 164 states have internal predecessors, (163180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:22,539 INFO L81 ComplementDD]: Finished complementDD. Result has 164 states, 164 states have (on average 995.0) internal successors, (163180), 164 states have internal predecessors, (163180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:22,539 INFO L175 Difference]: Start difference. First operand has 585 places, 2842 transitions, 52809 flow. Second operand 163 states and 53490 transitions. [2023-08-27 06:28:22,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 7375 transitions, 144440 flow Received shutdown request... [2023-08-27 06:30:00,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (53 of 54 remaining) [2023-08-27 06:30:00,265 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 06:30:00,298 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 06:30:00,298 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:30:00,464 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,SelfDestructingSolverStorable30 [2023-08-27 06:30:00,465 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 06:30:00,466 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 54 remaining) [2023-08-27 06:30:00,466 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 54 remaining) [2023-08-27 06:30:00,466 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 54 remaining) [2023-08-27 06:30:00,466 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 54 remaining) [2023-08-27 06:30:00,466 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 54 remaining) [2023-08-27 06:30:00,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 54 remaining) [2023-08-27 06:30:00,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 54 remaining) [2023-08-27 06:30:00,469 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 54 remaining) [2023-08-27 06:30:00,470 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 54 remaining) [2023-08-27 06:30:00,471 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 54 remaining) [2023-08-27 06:30:00,471 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:30:00,475 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:30:00,475 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:30:00,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:30:00 BasicIcfg [2023-08-27 06:30:00,477 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:30:00,478 INFO L158 Benchmark]: Toolchain (without parser) took 747351.05ms. Allocated memory was 377.5MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 353.7MB in the beginning and 9.4GB in the end (delta: -9.0GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-27 06:30:00,478 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 377.5MB. Free memory is still 354.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:30:00,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.55ms. Allocated memory is still 377.5MB. Free memory was 353.2MB in the beginning and 340.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 06:30:00,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.35ms. Allocated memory is still 377.5MB. Free memory was 340.4MB in the beginning and 337.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 06:30:00,478 INFO L158 Benchmark]: Boogie Preprocessor took 53.91ms. Allocated memory is still 377.5MB. Free memory was 337.3MB in the beginning and 335.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:30:00,478 INFO L158 Benchmark]: RCFGBuilder took 585.41ms. Allocated memory is still 377.5MB. Free memory was 335.2MB in the beginning and 304.8MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 06:30:00,479 INFO L158 Benchmark]: TraceAbstraction took 746306.80ms. Allocated memory was 377.5MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 353.6MB in the beginning and 9.4GB in the end (delta: -9.0GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-27 06:30:00,480 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 377.5MB. Free memory is still 354.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 298.55ms. Allocated memory is still 377.5MB. Free memory was 353.2MB in the beginning and 340.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 71.35ms. Allocated memory is still 377.5MB. Free memory was 340.4MB in the beginning and 337.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.91ms. Allocated memory is still 377.5MB. Free memory was 337.3MB in the beginning and 335.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 585.41ms. Allocated memory is still 377.5MB. Free memory was 335.2MB in the beginning and 304.8MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 746306.80ms. Allocated memory was 377.5MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 353.6MB in the beginning and 9.4GB in the end (delta: -9.0GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.1s, 408 PlacesBefore, 56 PlacesAfterwards, 430 TransitionsBefore, 50 TransitionsAfterwards, 53934 CoEnabledTransitionPairs, 9 FixpointIterations, 131 TrivialSequentialCompositions, 296 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 83 ConcurrentYvCompositions, 28 ChoiceCompositions, 551 TotalNumberOfCompositions, 51469 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50766, independent: 50739, independent conditional: 0, independent unconditional: 50739, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31752, independent: 31738, independent conditional: 0, independent unconditional: 31738, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 50766, independent: 19001, independent conditional: 0, independent unconditional: 19001, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 31752, unknown conditional: 0, unknown unconditional: 31752] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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 executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 659 locations, 54 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: 746.1s, OverallIterations: 31, TraceHistogramMax: 4, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 673.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6454 SdHoareTripleChecker+Valid, 19.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6454 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 17.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 737 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27648 IncrementalHoareTripleChecker+Invalid, 28385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 737 mSolverCounterUnsat, 0 mSDtfsCounter, 27648 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1517 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 951 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25044 ImplicationChecksByTransitivity, 100.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52809occurred in iteration=30, InterpolantAutomatonStates: 535, 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: 0.4s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 43.3s InterpolantComputationTime, 823 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1045 ConstructedInterpolants, 5 QuantifiedInterpolants, 20880 SizeOfPredicates, 660 NumberOfNonLiveVariables, 4792 ConjunctsInSsa, 526 ConjunctsInUnsatCore, 64 InterpolantComputations, 18 PerfectInterpolantSequences, 340/430 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