/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-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:17:20,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:17:20,630 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 06:17:20,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:17:20,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:17:20,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:17:20,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:17:20,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:17:20,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:17:20,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:17:20,671 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:17:20,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:17:20,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:17:20,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:17:20,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:17:20,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:17:20,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:17:20,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:17:20,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:17:20,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:17:20,675 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:17:20,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:17:20,676 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:17:20,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:17:20,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:17:20,677 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:17:20,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:17:20,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:17:20,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:17:20,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:17:20,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:17:20,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:17:20,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:17:20,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:17:20,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:17:20,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:17:21,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:17:21,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:17:21,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:17:21,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:17:21,049 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:17:21,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-08-27 06:17:22,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:17:22,487 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:17:22,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-08-27 06:17:22,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4961749ee/eed606ea802944caa8c1416da18d9b6b/FLAGad0b1e9cf [2023-08-27 06:17:22,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4961749ee/eed606ea802944caa8c1416da18d9b6b [2023-08-27 06:17:22,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:17:22,519 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:17:22,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:17:22,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:17:22,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:17:22,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae3e592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22, skipping insertion in model container [2023-08-27 06:17:22,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,559 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:17:22,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:17:22,770 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:17:22,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:17:22,820 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:17:22,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22 WrapperNode [2023-08-27 06:17:22,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:17:22,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:17:22,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:17:22,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:17:22,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,872 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 266 [2023-08-27 06:17:22,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:17:22,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:17:22,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:17:22,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:17:22,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:17:22,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:17:22,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:17:22,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:17:22,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (1/1) ... [2023-08-27 06:17:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:17:22,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:22,939 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 06:17:22,953 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 06:17:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:17:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:17:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:17:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:17:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:17:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:17:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:17:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:17:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:17:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 06:17:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:17:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:17:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:17:22,984 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 06:17:23,106 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:17:23,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:17:23,549 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:17:23,563 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:17:23,563 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 06:17:23,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:23 BoogieIcfgContainer [2023-08-27 06:17:23,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:17:23,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:17:23,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:17:23,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:17:23,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:17:22" (1/3) ... [2023-08-27 06:17:23,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c554dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:23, skipping insertion in model container [2023-08-27 06:17:23,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:22" (2/3) ... [2023-08-27 06:17:23,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c554dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:23, skipping insertion in model container [2023-08-27 06:17:23,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:23" (3/3) ... [2023-08-27 06:17:23,573 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-08-27 06:17:23,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:17:23,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-27 06:17:23,588 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:17:23,712 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 06:17:23,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 322 transitions, 660 flow [2023-08-27 06:17:23,914 INFO L124 PetriNetUnfolderBase]: 23/320 cut-off events. [2023-08-27 06:17:23,915 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:17:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 320 events. 23/320 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 699 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-27 06:17:23,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 322 transitions, 660 flow [2023-08-27 06:17:23,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 311 transitions, 634 flow [2023-08-27 06:17:23,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:17:23,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 311 transitions, 634 flow [2023-08-27 06:17:23,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 311 transitions, 634 flow [2023-08-27 06:17:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 311 transitions, 634 flow [2023-08-27 06:17:24,072 INFO L124 PetriNetUnfolderBase]: 23/311 cut-off events. [2023-08-27 06:17:24,072 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:17:24,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 311 events. 23/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 697 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-27 06:17:24,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 18512 [2023-08-27 06:17:37,654 INFO L134 LiptonReduction]: Checked pairs total: 18141 [2023-08-27 06:17:37,655 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-27 06:17:37,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:17:37,674 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;@7a0fb30a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:17:37,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-27 06:17:37,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:17:37,682 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 06:17:37,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:17:37,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:37,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:17:37,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:37,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash 42997, now seen corresponding path program 1 times [2023-08-27 06:17:37,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:37,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706724167] [2023-08-27 06:17:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:37,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:38,005 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 06:17:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706724167] [2023-08-27 06:17:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706724167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:38,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239424246] [2023-08-27 06:17:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:38,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:38,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:38,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:38,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:38,200 INFO L124 PetriNetUnfolderBase]: 227/394 cut-off events. [2023-08-27 06:17:38,200 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 06:17:38,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 394 events. 227/394 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1566 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 720. Up to 394 conditions per place. [2023-08-27 06:17:38,206 INFO L140 encePairwiseOnDemand]: 706/719 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-27 06:17:38,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 136 flow [2023-08-27 06:17:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2023-08-27 06:17:38,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42651831247102456 [2023-08-27 06:17:38,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2023-08-27 06:17:38,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2023-08-27 06:17:38,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:38,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2023-08-27 06:17:38,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,252 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 3 states and 920 transitions. [2023-08-27 06:17:38,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 136 flow [2023-08-27 06:17:38,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:17:38,258 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 83 flow [2023-08-27 06:17:38,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-08-27 06:17:38,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -9 predicate places. [2023-08-27 06:17:38,267 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 83 flow [2023-08-27 06:17:38,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:38,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:17:38,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:38,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1336503, now seen corresponding path program 1 times [2023-08-27 06:17:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540652986] [2023-08-27 06:17:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:38,397 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 06:17:38,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:38,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540652986] [2023-08-27 06:17:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540652986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958698914] [2023-08-27 06:17:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:38,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:38,400 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 06:17:38,438 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 06:17:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:38,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:17:38,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:17:38,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:17:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958698914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:38,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:17:38,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 06:17:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270212156] [2023-08-27 06:17:38,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:38,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:17:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:17:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:38,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:38,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:38,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:38,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:38,688 INFO L124 PetriNetUnfolderBase]: 227/393 cut-off events. [2023-08-27 06:17:38,689 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 06:17:38,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 393 events. 227/393 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1557 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 783. Up to 390 conditions per place. [2023-08-27 06:17:38,691 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-27 06:17:38,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 139 flow [2023-08-27 06:17:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:17:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:17:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1203 transitions. [2023-08-27 06:17:38,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182892906815021 [2023-08-27 06:17:38,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1203 transitions. [2023-08-27 06:17:38,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1203 transitions. [2023-08-27 06:17:38,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:38,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1203 transitions. [2023-08-27 06:17:38,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,705 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 83 flow. Second operand 4 states and 1203 transitions. [2023-08-27 06:17:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 139 flow [2023-08-27 06:17:38,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:38,707 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 82 flow [2023-08-27 06:17:38,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-08-27 06:17:38,708 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-08-27 06:17:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 82 flow [2023-08-27 06:17:38,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:38,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:38,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:38,723 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 06:17:38,915 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 06:17:38,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:38,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1336502, now seen corresponding path program 1 times [2023-08-27 06:17:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468713779] [2023-08-27 06:17:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:38,966 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 06:17:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468713779] [2023-08-27 06:17:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468713779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449022330] [2023-08-27 06:17:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:38,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:38,968 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 06:17:38,999 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 06:17:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:39,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:17:39,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:39,070 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 06:17:39,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:17:39,084 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 06:17:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449022330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:17:39,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:17:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 06:17:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026608568] [2023-08-27 06:17:39,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:17:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:17:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:17:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:17:39,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:39,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:39,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:39,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:39,237 INFO L124 PetriNetUnfolderBase]: 230/399 cut-off events. [2023-08-27 06:17:39,237 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 06:17:39,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 399 events. 230/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1592 event pairs, 189 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 783. Up to 396 conditions per place. [2023-08-27 06:17:39,239 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 27 selfloop transitions, 9 changer transitions 0/36 dead transitions. [2023-08-27 06:17:39,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 184 flow [2023-08-27 06:17:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:17:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:17:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1797 transitions. [2023-08-27 06:17:39,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41655076495132126 [2023-08-27 06:17:39,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1797 transitions. [2023-08-27 06:17:39,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1797 transitions. [2023-08-27 06:17:39,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:39,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1797 transitions. [2023-08-27 06:17:39,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.5) internal successors, (1797), 6 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,257 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 82 flow. Second operand 6 states and 1797 transitions. [2023-08-27 06:17:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 184 flow [2023-08-27 06:17:39,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:39,259 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 140 flow [2023-08-27 06:17:39,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-27 06:17:39,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-27 06:17:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 140 flow [2023-08-27 06:17:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:17:39,271 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 06:17:39,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 06:17:39,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:39,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1282622859, now seen corresponding path program 1 times [2023-08-27 06:17:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:39,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699295309] [2023-08-27 06:17:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:39,524 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 06:17:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699295309] [2023-08-27 06:17:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699295309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:39,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:39,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787851493] [2023-08-27 06:17:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:39,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:39,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:39,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:39,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:39,663 INFO L124 PetriNetUnfolderBase]: 298/521 cut-off events. [2023-08-27 06:17:39,663 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 06:17:39,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 521 events. 298/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2334 event pairs, 189 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 1056. Up to 400 conditions per place. [2023-08-27 06:17:39,666 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-27 06:17:39,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 283 flow [2023-08-27 06:17:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2023-08-27 06:17:39,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43069077422345853 [2023-08-27 06:17:39,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2023-08-27 06:17:39,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2023-08-27 06:17:39,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:39,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2023-08-27 06:17:39,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,677 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 140 flow. Second operand 3 states and 929 transitions. [2023-08-27 06:17:39,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 283 flow [2023-08-27 06:17:39,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 262 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:39,679 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 139 flow [2023-08-27 06:17:39,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=139, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-27 06:17:39,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-27 06:17:39,680 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 139 flow [2023-08-27 06:17:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:39,681 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 06:17:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:17:39,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:39,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1164626036, now seen corresponding path program 2 times [2023-08-27 06:17:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839861969] [2023-08-27 06:17:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:39,763 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 06:17:39,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:39,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839861969] [2023-08-27 06:17:39,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839861969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:39,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514772490] [2023-08-27 06:17:39,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:17:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:39,765 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 06:17:39,768 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 06:17:39,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:17:39,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:17:39,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:17:39,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:39,864 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 06:17:39,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:17:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514772490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:39,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:17:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 06:17:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609118443] [2023-08-27 06:17:39,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:17:39,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 719 [2023-08-27 06:17:39,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:39,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 719 [2023-08-27 06:17:39,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:39,975 INFO L124 PetriNetUnfolderBase]: 298/520 cut-off events. [2023-08-27 06:17:39,975 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-27 06:17:39,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 520 events. 298/520 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2209 event pairs, 251 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1213. Up to 520 conditions per place. [2023-08-27 06:17:39,978 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 06:17:39,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 201 flow [2023-08-27 06:17:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-27 06:17:39,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42188224385720907 [2023-08-27 06:17:39,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-27 06:17:39,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-27 06:17:39,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:39,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-27 06:17:39,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,990 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 139 flow. Second operand 3 states and 910 transitions. [2023-08-27 06:17:39,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 201 flow [2023-08-27 06:17:39,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 183 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 06:17:39,993 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 113 flow [2023-08-27 06:17:39,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=113, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-27 06:17:39,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-27 06:17:39,994 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 113 flow [2023-08-27 06:17:39,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:39,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:39,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:17:40,003 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 06:17:40,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:40,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:40,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1106604130, now seen corresponding path program 1 times [2023-08-27 06:17:40,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:40,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051609797] [2023-08-27 06:17:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:40,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:40,261 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 06:17:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051609797] [2023-08-27 06:17:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051609797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158271934] [2023-08-27 06:17:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:40,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:40,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:40,264 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 06:17:40,266 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 06:17:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:40,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:17:40,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:40,381 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 06:17:40,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:17:40,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158271934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:40,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:17:40,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-27 06:17:40,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248532537] [2023-08-27 06:17:40,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:40,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:40,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-27 06:17:40,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:40,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-27 06:17:40,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:40,520 INFO L124 PetriNetUnfolderBase]: 297/519 cut-off events. [2023-08-27 06:17:40,520 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-27 06:17:40,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 519 events. 297/519 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2202 event pairs, 251 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1197. Up to 519 conditions per place. [2023-08-27 06:17:40,523 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-27 06:17:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 179 flow [2023-08-27 06:17:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-08-27 06:17:40,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153917477978674 [2023-08-27 06:17:40,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-08-27 06:17:40,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-08-27 06:17:40,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:40,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-08-27 06:17:40,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,532 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 113 flow. Second operand 3 states and 896 transitions. [2023-08-27 06:17:40,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 179 flow [2023-08-27 06:17:40,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:40,533 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 112 flow [2023-08-27 06:17:40,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-08-27 06:17:40,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-08-27 06:17:40,534 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 112 flow [2023-08-27 06:17:40,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:40,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:40,541 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 06:17:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:40,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:40,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1685650468, now seen corresponding path program 1 times [2023-08-27 06:17:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160100726] [2023-08-27 06:17:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:40,809 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 06:17:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160100726] [2023-08-27 06:17:40,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160100726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:40,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257981429] [2023-08-27 06:17:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:40,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:40,838 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 06:17:40,839 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 06:17:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:40,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:17:40,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:40,951 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 06:17:40,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:17:40,966 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 06:17:40,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257981429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:17:40,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:17:40,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-27 06:17:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267939023] [2023-08-27 06:17:40,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:17:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:17:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:17:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:17:40,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 719 [2023-08-27 06:17:40,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 283.125) internal successors, (2265), 8 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:40,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:40,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 719 [2023-08-27 06:17:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:41,174 INFO L124 PetriNetUnfolderBase]: 381/657 cut-off events. [2023-08-27 06:17:41,174 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-27 06:17:41,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 657 events. 381/657 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3158 event pairs, 165 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 1510. Up to 349 conditions per place. [2023-08-27 06:17:41,178 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 59 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-08-27 06:17:41,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 314 flow [2023-08-27 06:17:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:17:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:17:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2038 transitions. [2023-08-27 06:17:41,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049274786409696 [2023-08-27 06:17:41,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2038 transitions. [2023-08-27 06:17:41,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2038 transitions. [2023-08-27 06:17:41,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:41,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2038 transitions. [2023-08-27 06:17:41,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.14285714285717) internal successors, (2038), 7 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,196 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 112 flow. Second operand 7 states and 2038 transitions. [2023-08-27 06:17:41,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 67 transitions, 314 flow [2023-08-27 06:17:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:41,198 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 142 flow [2023-08-27 06:17:41,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-08-27 06:17:41,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-27 06:17:41,199 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 142 flow [2023-08-27 06:17:41,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 283.125) internal successors, (2265), 8 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:41,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:41,211 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 06:17:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:41,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:41,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 574000073, now seen corresponding path program 1 times [2023-08-27 06:17:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62720813] [2023-08-27 06:17:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:41,453 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 06:17:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62720813] [2023-08-27 06:17:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62720813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:41,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865751871] [2023-08-27 06:17:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:41,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:41,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:41,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:41,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:41,574 INFO L124 PetriNetUnfolderBase]: 337/595 cut-off events. [2023-08-27 06:17:41,575 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-08-27 06:17:41,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 595 events. 337/595 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2634 event pairs, 289 based on Foata normal form. 36/391 useless extension candidates. Maximal degree in co-relation 1531. Up to 595 conditions per place. [2023-08-27 06:17:41,578 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-27 06:17:41,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 194 flow [2023-08-27 06:17:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-27 06:17:41,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200278164116829 [2023-08-27 06:17:41,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-27 06:17:41,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-27 06:17:41,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:41,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-27 06:17:41,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,587 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 142 flow. Second operand 3 states and 906 transitions. [2023-08-27 06:17:41,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 194 flow [2023-08-27 06:17:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 176 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 06:17:41,591 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 112 flow [2023-08-27 06:17:41,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-27 06:17:41,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-27 06:17:41,593 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 112 flow [2023-08-27 06:17:41,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:41,593 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:41,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 06:17:41,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:41,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 613084515, now seen corresponding path program 1 times [2023-08-27 06:17:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:41,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348985150] [2023-08-27 06:17:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:41,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:41,643 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 06:17:41,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:41,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348985150] [2023-08-27 06:17:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348985150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:41,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:41,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521657232] [2023-08-27 06:17:41,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:41,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:41,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:41,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:41,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:41,841 INFO L124 PetriNetUnfolderBase]: 415/735 cut-off events. [2023-08-27 06:17:41,841 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-08-27 06:17:41,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 735 events. 415/735 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3462 event pairs, 289 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 1792. Up to 596 conditions per place. [2023-08-27 06:17:41,845 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-27 06:17:41,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 272 flow [2023-08-27 06:17:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-08-27 06:17:41,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283727399165508 [2023-08-27 06:17:41,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-08-27 06:17:41,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-08-27 06:17:41,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:41,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-08-27 06:17:41,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,854 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 112 flow. Second operand 3 states and 924 transitions. [2023-08-27 06:17:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 272 flow [2023-08-27 06:17:41,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:41,856 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 131 flow [2023-08-27 06:17:41,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-27 06:17:41,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-27 06:17:41,857 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 131 flow [2023-08-27 06:17:41,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:41,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:41,858 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-27 06:17:41,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 06:17:41,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:41,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 614134461, now seen corresponding path program 2 times [2023-08-27 06:17:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654957645] [2023-08-27 06:17:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:41,958 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 06:17:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:41,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654957645] [2023-08-27 06:17:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654957645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100897874] [2023-08-27 06:17:41,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:17:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:41,963 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 06:17:41,965 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 06:17:42,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:17:42,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:17:42,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:17:42,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 06:17:42,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:17:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100897874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:42,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:17:42,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 06:17:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187922543] [2023-08-27 06:17:42,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:42,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-27 06:17:42,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:42,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-27 06:17:42,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:42,197 INFO L124 PetriNetUnfolderBase]: 347/619 cut-off events. [2023-08-27 06:17:42,197 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-08-27 06:17:42,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 619 events. 347/619 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2707 event pairs, 299 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1699. Up to 619 conditions per place. [2023-08-27 06:17:42,201 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-27 06:17:42,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 185 flow [2023-08-27 06:17:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-27 06:17:42,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140009272137228 [2023-08-27 06:17:42,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-27 06:17:42,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-27 06:17:42,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:42,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-27 06:17:42,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,210 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 131 flow. Second operand 3 states and 893 transitions. [2023-08-27 06:17:42,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 185 flow [2023-08-27 06:17:42,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:42,211 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 121 flow [2023-08-27 06:17:42,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=121, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-27 06:17:42,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-27 06:17:42,213 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 121 flow [2023-08-27 06:17:42,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:42,213 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-27 06:17:42,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 06:17:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:42,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:42,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 614134430, now seen corresponding path program 1 times [2023-08-27 06:17:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684326636] [2023-08-27 06:17:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 06:17:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684326636] [2023-08-27 06:17:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684326636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:42,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:42,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:42,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213802176] [2023-08-27 06:17:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:42,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-27 06:17:42,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:42,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-27 06:17:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:42,590 INFO L124 PetriNetUnfolderBase]: 285/513 cut-off events. [2023-08-27 06:17:42,590 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-08-27 06:17:42,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 513 events. 285/513 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2094 event pairs, 241 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1362. Up to 513 conditions per place. [2023-08-27 06:17:42,593 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-27 06:17:42,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 171 flow [2023-08-27 06:17:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-08-27 06:17:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41307371349095967 [2023-08-27 06:17:42,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-08-27 06:17:42,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-08-27 06:17:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:42,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-08-27 06:17:42,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,602 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 121 flow. Second operand 3 states and 891 transitions. [2023-08-27 06:17:42,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 171 flow [2023-08-27 06:17:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:42,603 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 112 flow [2023-08-27 06:17:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-27 06:17:42,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-27 06:17:42,604 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 112 flow [2023-08-27 06:17:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:42,604 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-27 06:17:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 06:17:42,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:42,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 614134460, now seen corresponding path program 1 times [2023-08-27 06:17:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975807766] [2023-08-27 06:17:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:42,685 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 06:17:42,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975807766] [2023-08-27 06:17:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975807766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901831780] [2023-08-27 06:17:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:42,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:42,687 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 06:17:42,705 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 06:17:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:42,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:17:42,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:42,810 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 06:17:42,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:17:42,868 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 06:17:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901831780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:17:42,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:17:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-27 06:17:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667893530] [2023-08-27 06:17:42,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:17:42,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:42,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:42,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 294.6666666666667) internal successors, (1768), 6 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:42,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:42,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:42,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:43,100 INFO L124 PetriNetUnfolderBase]: 353/637 cut-off events. [2023-08-27 06:17:43,100 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-27 06:17:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 637 events. 353/637 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3006 event pairs, 117 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 1684. Up to 266 conditions per place. [2023-08-27 06:17:43,104 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 72 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-27 06:17:43,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 76 transitions, 405 flow [2023-08-27 06:17:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2023-08-27 06:17:43,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267037552155772 [2023-08-27 06:17:43,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2023-08-27 06:17:43,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2023-08-27 06:17:43,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:43,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2023-08-27 06:17:43,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,117 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 112 flow. Second operand 5 states and 1534 transitions. [2023-08-27 06:17:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 76 transitions, 405 flow [2023-08-27 06:17:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:43,119 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 133 flow [2023-08-27 06:17:43,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-27 06:17:43,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-27 06:17:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 133 flow [2023-08-27 06:17:43,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.6666666666667) internal successors, (1768), 6 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:43,120 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-27 06:17:43,129 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 06:17:43,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:43,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:43,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1858299651, now seen corresponding path program 2 times [2023-08-27 06:17:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966491726] [2023-08-27 06:17:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 06:17:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966491726] [2023-08-27 06:17:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966491726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027215309] [2023-08-27 06:17:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:43,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:43,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-27 06:17:43,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:43,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-27 06:17:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:43,541 INFO L124 PetriNetUnfolderBase]: 289/527 cut-off events. [2023-08-27 06:17:43,542 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-08-27 06:17:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 527 events. 289/527 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2170 event pairs, 243 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1479. Up to 527 conditions per place. [2023-08-27 06:17:43,545 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-27 06:17:43,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 179 flow [2023-08-27 06:17:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-08-27 06:17:43,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41214649976819656 [2023-08-27 06:17:43,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-08-27 06:17:43,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-08-27 06:17:43,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:43,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-08-27 06:17:43,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,553 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 133 flow. Second operand 3 states and 889 transitions. [2023-08-27 06:17:43,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 179 flow [2023-08-27 06:17:43,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 169 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 06:17:43,557 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 113 flow [2023-08-27 06:17:43,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-27 06:17:43,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-27 06:17:43,558 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 113 flow [2023-08-27 06:17:43,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:43,558 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-27 06:17:43,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 06:17:43,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:43,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1858299632, now seen corresponding path program 1 times [2023-08-27 06:17:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825417780] [2023-08-27 06:17:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:43,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 06:17:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825417780] [2023-08-27 06:17:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825417780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041539830] [2023-08-27 06:17:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:43,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-27 06:17:43,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-27 06:17:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:43,711 INFO L124 PetriNetUnfolderBase]: 231/427 cut-off events. [2023-08-27 06:17:43,712 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2023-08-27 06:17:43,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 427 events. 231/427 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1654 event pairs, 189 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 1096. Up to 427 conditions per place. [2023-08-27 06:17:43,714 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-27 06:17:43,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 155 flow [2023-08-27 06:17:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2023-08-27 06:17:43,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41121928604543345 [2023-08-27 06:17:43,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 887 transitions. [2023-08-27 06:17:43,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 887 transitions. [2023-08-27 06:17:43,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:43,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 887 transitions. [2023-08-27 06:17:43,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,722 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 113 flow. Second operand 3 states and 887 transitions. [2023-08-27 06:17:43,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 155 flow [2023-08-27 06:17:43,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:43,723 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-08-27 06:17:43,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-27 06:17:43,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-27 06:17:43,724 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-08-27 06:17:43,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:43,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:43,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 06:17:43,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:43,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1825751903, now seen corresponding path program 1 times [2023-08-27 06:17:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058026260] [2023-08-27 06:17:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:43,786 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 06:17:43,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058026260] [2023-08-27 06:17:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058026260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:43,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:43,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:17:43,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284903042] [2023-08-27 06:17:43,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:43,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-27 06:17:43,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:43,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-27 06:17:43,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:43,885 INFO L124 PetriNetUnfolderBase]: 196/366 cut-off events. [2023-08-27 06:17:43,886 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-08-27 06:17:43,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 366 events. 196/366 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1341 event pairs, 156 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 930. Up to 366 conditions per place. [2023-08-27 06:17:43,888 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-27 06:17:43,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 150 flow [2023-08-27 06:17:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2023-08-27 06:17:43,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41585535465924894 [2023-08-27 06:17:43,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2023-08-27 06:17:43,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2023-08-27 06:17:43,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:43,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2023-08-27 06:17:43,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,895 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 3 states and 897 transitions. [2023-08-27 06:17:43,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 150 flow [2023-08-27 06:17:43,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:43,896 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 99 flow [2023-08-27 06:17:43,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-08-27 06:17:43,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-27 06:17:43,897 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 99 flow [2023-08-27 06:17:43,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:43,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:43,898 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 06:17:43,898 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:43,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1078590853, now seen corresponding path program 1 times [2023-08-27 06:17:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470242708] [2023-08-27 06:17:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:44,292 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 06:17:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470242708] [2023-08-27 06:17:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470242708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231285045] [2023-08-27 06:17:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:44,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:44,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:44,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:44,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:44,495 INFO L124 PetriNetUnfolderBase]: 260/482 cut-off events. [2023-08-27 06:17:44,495 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-08-27 06:17:44,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 482 events. 260/482 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2180 event pairs, 4 based on Foata normal form. 4/486 useless extension candidates. Maximal degree in co-relation 1218. Up to 372 conditions per place. [2023-08-27 06:17:44,498 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 35 selfloop transitions, 14 changer transitions 3/52 dead transitions. [2023-08-27 06:17:44,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 299 flow [2023-08-27 06:17:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1297 transitions. [2023-08-27 06:17:44,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360778859527121 [2023-08-27 06:17:44,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1297 transitions. [2023-08-27 06:17:44,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1297 transitions. [2023-08-27 06:17:44,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:44,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1297 transitions. [2023-08-27 06:17:44,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.4) internal successors, (1297), 5 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,510 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 99 flow. Second operand 5 states and 1297 transitions. [2023-08-27 06:17:44,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 299 flow [2023-08-27 06:17:44,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:44,512 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 233 flow [2023-08-27 06:17:44,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-27 06:17:44,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-27 06:17:44,512 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 233 flow [2023-08-27 06:17:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:44,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:44,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 06:17:44,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:44,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -498891611, now seen corresponding path program 2 times [2023-08-27 06:17:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:44,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762005781] [2023-08-27 06:17:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:44,969 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 06:17:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:44,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762005781] [2023-08-27 06:17:44,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762005781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:44,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:44,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242464894] [2023-08-27 06:17:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:44,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:44,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:44,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:44,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:45,172 INFO L124 PetriNetUnfolderBase]: 260/489 cut-off events. [2023-08-27 06:17:45,173 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2023-08-27 06:17:45,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 489 events. 260/489 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2132 event pairs, 66 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 1638. Up to 261 conditions per place. [2023-08-27 06:17:45,176 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 53 selfloop transitions, 6 changer transitions 6/65 dead transitions. [2023-08-27 06:17:45,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 488 flow [2023-08-27 06:17:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1300 transitions. [2023-08-27 06:17:45,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616133518776078 [2023-08-27 06:17:45,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1300 transitions. [2023-08-27 06:17:45,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1300 transitions. [2023-08-27 06:17:45,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:45,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1300 transitions. [2023-08-27 06:17:45,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,188 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 233 flow. Second operand 5 states and 1300 transitions. [2023-08-27 06:17:45,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 488 flow [2023-08-27 06:17:45,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:45,191 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 262 flow [2023-08-27 06:17:45,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-27 06:17:45,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-08-27 06:17:45,192 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 262 flow [2023-08-27 06:17:45,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:45,192 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:45,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 06:17:45,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:45,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash 944086705, now seen corresponding path program 3 times [2023-08-27 06:17:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693604331] [2023-08-27 06:17:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:45,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:45,547 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 06:17:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:45,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693604331] [2023-08-27 06:17:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693604331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306414861] [2023-08-27 06:17:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:45,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:45,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:45,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:45,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:45,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:45,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:45,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:45,820 INFO L124 PetriNetUnfolderBase]: 317/617 cut-off events. [2023-08-27 06:17:45,820 INFO L125 PetriNetUnfolderBase]: For 1197/1197 co-relation queries the response was YES. [2023-08-27 06:17:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 617 events. 317/617 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3082 event pairs, 26 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 2380. Up to 360 conditions per place. [2023-08-27 06:17:45,825 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 47 selfloop transitions, 15 changer transitions 4/66 dead transitions. [2023-08-27 06:17:45,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 527 flow [2023-08-27 06:17:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1299 transitions. [2023-08-27 06:17:45,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613351877607789 [2023-08-27 06:17:45,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1299 transitions. [2023-08-27 06:17:45,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1299 transitions. [2023-08-27 06:17:45,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:45,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1299 transitions. [2023-08-27 06:17:45,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.8) internal successors, (1299), 5 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,837 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,838 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 262 flow. Second operand 5 states and 1299 transitions. [2023-08-27 06:17:45,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 527 flow [2023-08-27 06:17:45,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 499 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 06:17:45,842 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 356 flow [2023-08-27 06:17:45,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-27 06:17:45,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-08-27 06:17:45,843 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 356 flow [2023-08-27 06:17:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:45,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:45,844 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:45,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 06:17:45,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:45,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1178450149, now seen corresponding path program 4 times [2023-08-27 06:17:45,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:45,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142965455] [2023-08-27 06:17:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:46,216 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 06:17:46,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:46,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142965455] [2023-08-27 06:17:46,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142965455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:46,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292989965] [2023-08-27 06:17:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:46,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:46,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:46,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:46,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:46,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:46,541 INFO L124 PetriNetUnfolderBase]: 322/648 cut-off events. [2023-08-27 06:17:46,541 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2023-08-27 06:17:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 648 events. 322/648 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3270 event pairs, 74 based on Foata normal form. 4/652 useless extension candidates. Maximal degree in co-relation 2728. Up to 283 conditions per place. [2023-08-27 06:17:46,545 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 60 selfloop transitions, 13 changer transitions 4/77 dead transitions. [2023-08-27 06:17:46,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 703 flow [2023-08-27 06:17:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1303 transitions. [2023-08-27 06:17:46,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36244784422809456 [2023-08-27 06:17:46,549 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1303 transitions. [2023-08-27 06:17:46,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1303 transitions. [2023-08-27 06:17:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:46,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1303 transitions. [2023-08-27 06:17:46,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.6) internal successors, (1303), 5 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 06:17:46,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:46,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:46,556 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 356 flow. Second operand 5 states and 1303 transitions. [2023-08-27 06:17:46,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 703 flow [2023-08-27 06:17:46,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 681 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:46,563 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 453 flow [2023-08-27 06:17:46,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-08-27 06:17:46,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-27 06:17:46,563 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 453 flow [2023-08-27 06:17:46,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:46,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:46,564 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:46,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 06:17:46,564 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:46,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1136728765, now seen corresponding path program 5 times [2023-08-27 06:17:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673573115] [2023-08-27 06:17:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:46,891 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 06:17:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:46,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673573115] [2023-08-27 06:17:46,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673573115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:46,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:46,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293008501] [2023-08-27 06:17:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:46,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:46,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:46,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:46,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:46,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:47,146 INFO L124 PetriNetUnfolderBase]: 298/612 cut-off events. [2023-08-27 06:17:47,146 INFO L125 PetriNetUnfolderBase]: For 1907/1907 co-relation queries the response was YES. [2023-08-27 06:17:47,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 612 events. 298/612 cut-off events. For 1907/1907 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3218 event pairs, 11 based on Foata normal form. 18/630 useless extension candidates. Maximal degree in co-relation 2786. Up to 391 conditions per place. [2023-08-27 06:17:47,151 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-08-27 06:17:47,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 565 flow [2023-08-27 06:17:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1297 transitions. [2023-08-27 06:17:47,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360778859527121 [2023-08-27 06:17:47,155 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1297 transitions. [2023-08-27 06:17:47,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1297 transitions. [2023-08-27 06:17:47,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:47,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1297 transitions. [2023-08-27 06:17:47,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.4) internal successors, (1297), 5 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,162 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 453 flow. Second operand 5 states and 1297 transitions. [2023-08-27 06:17:47,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 565 flow [2023-08-27 06:17:47,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 533 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:47,167 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 303 flow [2023-08-27 06:17:47,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-27 06:17:47,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-27 06:17:47,168 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 303 flow [2023-08-27 06:17:47,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:47,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:47,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 06:17:47,169 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:47,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1344683929, now seen corresponding path program 6 times [2023-08-27 06:17:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284380258] [2023-08-27 06:17:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:47,541 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 06:17:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284380258] [2023-08-27 06:17:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284380258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332927352] [2023-08-27 06:17:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:47,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:17:47,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:17:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:17:47,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-27 06:17:47,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:47,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-27 06:17:47,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:47,812 INFO L124 PetriNetUnfolderBase]: 240/470 cut-off events. [2023-08-27 06:17:47,812 INFO L125 PetriNetUnfolderBase]: For 1746/1746 co-relation queries the response was YES. [2023-08-27 06:17:47,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 470 events. 240/470 cut-off events. For 1746/1746 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2058 event pairs, 66 based on Foata normal form. 12/482 useless extension candidates. Maximal degree in co-relation 2042. Up to 283 conditions per place. [2023-08-27 06:17:47,816 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 44 selfloop transitions, 7 changer transitions 6/57 dead transitions. [2023-08-27 06:17:47,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 503 flow [2023-08-27 06:17:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1298 transitions. [2023-08-27 06:17:47,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3610570236439499 [2023-08-27 06:17:47,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1298 transitions. [2023-08-27 06:17:47,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1298 transitions. [2023-08-27 06:17:47,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:47,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1298 transitions. [2023-08-27 06:17:47,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.6) internal successors, (1298), 5 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,828 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 303 flow. Second operand 5 states and 1298 transitions. [2023-08-27 06:17:47,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 503 flow [2023-08-27 06:17:47,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 464 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-27 06:17:47,832 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 247 flow [2023-08-27 06:17:47,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-08-27 06:17:47,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-27 06:17:47,833 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 247 flow [2023-08-27 06:17:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:47,834 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 06:17:47,834 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:47,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1912224836, now seen corresponding path program 1 times [2023-08-27 06:17:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448328537] [2023-08-27 06:17:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:47,993 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 06:17:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448328537] [2023-08-27 06:17:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448328537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:47,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:47,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:47,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105568261] [2023-08-27 06:17:47,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:47,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:47,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-27 06:17:47,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:47,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:47,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-27 06:17:47,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:48,141 INFO L124 PetriNetUnfolderBase]: 226/412 cut-off events. [2023-08-27 06:17:48,142 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-27 06:17:48,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 412 events. 226/412 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1602 event pairs, 24 based on Foata normal form. 4/416 useless extension candidates. Maximal degree in co-relation 1792. Up to 202 conditions per place. [2023-08-27 06:17:48,145 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 49 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-08-27 06:17:48,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 496 flow [2023-08-27 06:17:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1350 transitions. [2023-08-27 06:17:48,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37552155771905427 [2023-08-27 06:17:48,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1350 transitions. [2023-08-27 06:17:48,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1350 transitions. [2023-08-27 06:17:48,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:48,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1350 transitions. [2023-08-27 06:17:48,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,156 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 247 flow. Second operand 5 states and 1350 transitions. [2023-08-27 06:17:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 496 flow [2023-08-27 06:17:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 440 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-27 06:17:48,160 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 260 flow [2023-08-27 06:17:48,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-08-27 06:17:48,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-27 06:17:48,161 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 260 flow [2023-08-27 06:17:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:48,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 06:17:48,161 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:48,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 559643802, now seen corresponding path program 2 times [2023-08-27 06:17:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130984975] [2023-08-27 06:17:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:48,319 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 06:17:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130984975] [2023-08-27 06:17:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130984975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:48,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:48,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:48,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730448848] [2023-08-27 06:17:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:48,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:48,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:48,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 719 [2023-08-27 06:17:48,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:48,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 719 [2023-08-27 06:17:48,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:48,547 INFO L124 PetriNetUnfolderBase]: 222/408 cut-off events. [2023-08-27 06:17:48,548 INFO L125 PetriNetUnfolderBase]: For 1446/1446 co-relation queries the response was YES. [2023-08-27 06:17:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 408 events. 222/408 cut-off events. For 1446/1446 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1623 event pairs, 50 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 1700. Up to 267 conditions per place. [2023-08-27 06:17:48,553 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 57 selfloop transitions, 15 changer transitions 3/75 dead transitions. [2023-08-27 06:17:48,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 617 flow [2023-08-27 06:17:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:17:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:17:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2023-08-27 06:17:48,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36697794555930857 [2023-08-27 06:17:48,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2023-08-27 06:17:48,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2023-08-27 06:17:48,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:48,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2023-08-27 06:17:48,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,566 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 260 flow. Second operand 7 states and 1847 transitions. [2023-08-27 06:17:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 617 flow [2023-08-27 06:17:48,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 589 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:48,569 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 360 flow [2023-08-27 06:17:48,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-27 06:17:48,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-27 06:17:48,570 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 360 flow [2023-08-27 06:17:48,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:48,570 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 06:17:48,571 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:48,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1361992902, now seen corresponding path program 3 times [2023-08-27 06:17:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193126170] [2023-08-27 06:17:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:48,754 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 06:17:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193126170] [2023-08-27 06:17:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193126170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614166395] [2023-08-27 06:17:48,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:48,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:48,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-27 06:17:48,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:48,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-27 06:17:48,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:48,934 INFO L124 PetriNetUnfolderBase]: 231/427 cut-off events. [2023-08-27 06:17:48,935 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2023-08-27 06:17:48,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 427 events. 231/427 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1694 event pairs, 95 based on Foata normal form. 4/431 useless extension candidates. Maximal degree in co-relation 1952. Up to 326 conditions per place. [2023-08-27 06:17:48,943 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 57 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2023-08-27 06:17:48,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 634 flow [2023-08-27 06:17:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1359 transitions. [2023-08-27 06:17:48,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780250347705146 [2023-08-27 06:17:48,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1359 transitions. [2023-08-27 06:17:48,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1359 transitions. [2023-08-27 06:17:48,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:48,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1359 transitions. [2023-08-27 06:17:48,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,955 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,955 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 360 flow. Second operand 5 states and 1359 transitions. [2023-08-27 06:17:48,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 634 flow [2023-08-27 06:17:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 600 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:48,960 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 449 flow [2023-08-27 06:17:48,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-27 06:17:48,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-08-27 06:17:48,961 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 449 flow [2023-08-27 06:17:48,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:48,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:48,961 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:48,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 06:17:48,962 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:48,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash -234105642, now seen corresponding path program 4 times [2023-08-27 06:17:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:48,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207292485] [2023-08-27 06:17:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:49,111 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 06:17:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207292485] [2023-08-27 06:17:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207292485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344066985] [2023-08-27 06:17:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:49,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:49,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-27 06:17:49,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:49,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-27 06:17:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:49,286 INFO L124 PetriNetUnfolderBase]: 221/407 cut-off events. [2023-08-27 06:17:49,286 INFO L125 PetriNetUnfolderBase]: For 1919/1919 co-relation queries the response was YES. [2023-08-27 06:17:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 407 events. 221/407 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1581 event pairs, 95 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 1942. Up to 326 conditions per place. [2023-08-27 06:17:49,290 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 46 selfloop transitions, 13 changer transitions 4/63 dead transitions. [2023-08-27 06:17:49,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 595 flow [2023-08-27 06:17:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1352 transitions. [2023-08-27 06:17:49,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760778859527121 [2023-08-27 06:17:49,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1352 transitions. [2023-08-27 06:17:49,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1352 transitions. [2023-08-27 06:17:49,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:49,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1352 transitions. [2023-08-27 06:17:49,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.4) internal successors, (1352), 5 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,298 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 449 flow. Second operand 5 states and 1352 transitions. [2023-08-27 06:17:49,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 595 flow [2023-08-27 06:17:49,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 578 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:49,303 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 433 flow [2023-08-27 06:17:49,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-27 06:17:49,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-08-27 06:17:49,304 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 433 flow [2023-08-27 06:17:49,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:49,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:49,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 06:17:49,305 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:49,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1894084612, now seen corresponding path program 5 times [2023-08-27 06:17:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295478575] [2023-08-27 06:17:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:49,448 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 06:17:49,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:49,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295478575] [2023-08-27 06:17:49,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295478575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:49,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:49,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953070800] [2023-08-27 06:17:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:49,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-27 06:17:49,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:49,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-27 06:17:49,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:49,623 INFO L124 PetriNetUnfolderBase]: 216/398 cut-off events. [2023-08-27 06:17:49,624 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2023-08-27 06:17:49,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 398 events. 216/398 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1516 event pairs, 80 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 1916. Up to 291 conditions per place. [2023-08-27 06:17:49,627 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 48 selfloop transitions, 11 changer transitions 4/63 dead transitions. [2023-08-27 06:17:49,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 640 flow [2023-08-27 06:17:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2023-08-27 06:17:49,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37468706536856744 [2023-08-27 06:17:49,629 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:49,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,634 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 433 flow. Second operand 5 states and 1347 transitions. [2023-08-27 06:17:49,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 640 flow [2023-08-27 06:17:49,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 608 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 06:17:49,640 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 449 flow [2023-08-27 06:17:49,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-27 06:17:49,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-08-27 06:17:49,640 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 449 flow [2023-08-27 06:17:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:49,641 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:49,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 06:17:49,641 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:49,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2136564266, now seen corresponding path program 6 times [2023-08-27 06:17:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237851937] [2023-08-27 06:17:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:49,785 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 06:17:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237851937] [2023-08-27 06:17:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237851937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:49,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:17:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998658315] [2023-08-27 06:17:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:17:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:17:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:17:49,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-27 06:17:49,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:49,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-27 06:17:49,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:49,925 INFO L124 PetriNetUnfolderBase]: 205/373 cut-off events. [2023-08-27 06:17:49,925 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2023-08-27 06:17:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 373 events. 205/373 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1352 event pairs, 74 based on Foata normal form. 4/377 useless extension candidates. Maximal degree in co-relation 1852. Up to 263 conditions per place. [2023-08-27 06:17:49,928 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 47 selfloop transitions, 13 changer transitions 1/61 dead transitions. [2023-08-27 06:17:49,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 626 flow [2023-08-27 06:17:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2023-08-27 06:17:49,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37468706536856744 [2023-08-27 06:17:49,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:49,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2023-08-27 06:17:49,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,936 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 449 flow. Second operand 5 states and 1347 transitions. [2023-08-27 06:17:49,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 626 flow [2023-08-27 06:17:49,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 613 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:49,941 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 451 flow [2023-08-27 06:17:49,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-08-27 06:17:49,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2023-08-27 06:17:49,942 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 451 flow [2023-08-27 06:17:49,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:49,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:49,942 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:49,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 06:17:49,942 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:49,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 218852231, now seen corresponding path program 1 times [2023-08-27 06:17:49,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:49,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212977362] [2023-08-27 06:17:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:49,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:50,876 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 06:17:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212977362] [2023-08-27 06:17:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212977362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570172359] [2023-08-27 06:17:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:50,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:50,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:50,878 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 06:17:50,881 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 06:17:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:51,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 06:17:51,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:51,561 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 143 treesize of output 91 [2023-08-27 06:17:51,923 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 06:17:51,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:17:53,767 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:17:53,767 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 366 treesize of output 242 [2023-08-27 06:17:54,291 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 06:17:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570172359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:17:54,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:17:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-27 06:17:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301711203] [2023-08-27 06:17:54,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:17:54,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:17:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:17:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:17:54,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:17:54,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 451 flow. Second operand has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:54,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:54,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:17:54,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:56,412 INFO L124 PetriNetUnfolderBase]: 402/776 cut-off events. [2023-08-27 06:17:56,412 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2023-08-27 06:17:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 776 events. 402/776 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3911 event pairs, 36 based on Foata normal form. 8/784 useless extension candidates. Maximal degree in co-relation 3712. Up to 254 conditions per place. [2023-08-27 06:17:56,422 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 97 selfloop transitions, 54 changer transitions 25/176 dead transitions. [2023-08-27 06:17:56,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 176 transitions, 1520 flow [2023-08-27 06:17:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:17:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:17:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5518 transitions. [2023-08-27 06:17:56,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3336759992743545 [2023-08-27 06:17:56,432 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5518 transitions. [2023-08-27 06:17:56,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5518 transitions. [2023-08-27 06:17:56,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:56,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5518 transitions. [2023-08-27 06:17:56,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 239.91304347826087) internal successors, (5518), 23 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,460 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 451 flow. Second operand 23 states and 5518 transitions. [2023-08-27 06:17:56,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 176 transitions, 1520 flow [2023-08-27 06:17:56,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 176 transitions, 1456 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-27 06:17:56,474 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 970 flow [2023-08-27 06:17:56,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=970, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2023-08-27 06:17:56,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2023-08-27 06:17:56,477 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 970 flow [2023-08-27 06:17:56,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:17:56,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:56,478 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:56,487 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 06:17:56,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 06:17:56,688 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:17:56,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 161246645, now seen corresponding path program 2 times [2023-08-27 06:17:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644790442] [2023-08-27 06:17:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:56,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:57,732 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 06:17:57,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:57,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644790442] [2023-08-27 06:17:57,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644790442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:17:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453365761] [2023-08-27 06:17:57,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:17:57,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:17:57,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:17:57,734 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 06:17:57,737 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 06:17:57,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:17:57,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:17:57,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:17:57,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:17:58,225 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 06:17:58,823 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 06:17:58,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:00,913 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:00,913 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 372 treesize of output 268 [2023-08-27 06:18:01,379 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 06:18:01,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453365761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:01,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:18:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739250806] [2023-08-27 06:18:01,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:01,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:18:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:18:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:18:01,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:18:01,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 970 flow. Second operand has 20 states, 20 states have (on average 236.05) internal successors, (4721), 20 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:01,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:01,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:18:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:03,405 INFO L124 PetriNetUnfolderBase]: 446/930 cut-off events. [2023-08-27 06:18:03,405 INFO L125 PetriNetUnfolderBase]: For 5253/5253 co-relation queries the response was YES. [2023-08-27 06:18:03,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 930 events. 446/930 cut-off events. For 5253/5253 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5189 event pairs, 106 based on Foata normal form. 6/936 useless extension candidates. Maximal degree in co-relation 4918. Up to 528 conditions per place. [2023-08-27 06:18:03,413 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 113 selfloop transitions, 53 changer transitions 14/180 dead transitions. [2023-08-27 06:18:03,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1875 flow [2023-08-27 06:18:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 06:18:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 06:18:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4319 transitions. [2023-08-27 06:18:03,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33371967238448463 [2023-08-27 06:18:03,419 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4319 transitions. [2023-08-27 06:18:03,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4319 transitions. [2023-08-27 06:18:03,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:03,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4319 transitions. [2023-08-27 06:18:03,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 239.94444444444446) internal successors, (4319), 18 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,434 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,434 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 970 flow. Second operand 18 states and 4319 transitions. [2023-08-27 06:18:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1875 flow [2023-08-27 06:18:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1512 flow, removed 163 selfloop flow, removed 8 redundant places. [2023-08-27 06:18:03,460 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1111 flow [2023-08-27 06:18:03,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1111, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2023-08-27 06:18:03,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2023-08-27 06:18:03,461 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1111 flow [2023-08-27 06:18:03,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 236.05) internal successors, (4721), 20 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:03,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:03,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:03,467 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 06:18:03,667 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,SelfDestructingSolverStorable28 [2023-08-27 06:18:03,668 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:03,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash 117465497, now seen corresponding path program 3 times [2023-08-27 06:18:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:03,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206368515] [2023-08-27 06:18:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:05,022 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 06:18:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206368515] [2023-08-27 06:18:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206368515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448681836] [2023-08-27 06:18:05,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:18:05,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:05,025 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 06:18:05,052 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 06:18:05,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:18:05,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:05,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 06:18:05,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:05,551 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 174 treesize of output 114 [2023-08-27 06:18:06,142 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 06:18:06,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:08,208 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:08,209 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 445 treesize of output 317 [2023-08-27 06:18:09,065 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 06:18:09,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448681836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:09,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:09,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 25 [2023-08-27 06:18:09,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682425703] [2023-08-27 06:18:09,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:18:09,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:18:09,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-08-27 06:18:09,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:18:09,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1111 flow. Second operand has 26 states, 26 states have (on average 218.92307692307693) internal successors, (5692), 26 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:09,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:09,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:18:09,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:14,013 INFO L124 PetriNetUnfolderBase]: 1189/2656 cut-off events. [2023-08-27 06:18:14,014 INFO L125 PetriNetUnfolderBase]: For 11712/11712 co-relation queries the response was YES. [2023-08-27 06:18:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 2656 events. 1189/2656 cut-off events. For 11712/11712 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20269 event pairs, 178 based on Foata normal form. 8/2664 useless extension candidates. Maximal degree in co-relation 12226. Up to 505 conditions per place. [2023-08-27 06:18:14,036 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 270 selfloop transitions, 158 changer transitions 22/450 dead transitions. [2023-08-27 06:18:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 450 transitions, 4749 flow [2023-08-27 06:18:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 06:18:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 06:18:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8904 transitions. [2023-08-27 06:18:14,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30959666203059805 [2023-08-27 06:18:14,053 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8904 transitions. [2023-08-27 06:18:14,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8904 transitions. [2023-08-27 06:18:14,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:14,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8904 transitions. [2023-08-27 06:18:14,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 222.6) internal successors, (8904), 40 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:14,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 719.0) internal successors, (29479), 41 states have internal predecessors, (29479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:14,089 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 719.0) internal successors, (29479), 41 states have internal predecessors, (29479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:14,089 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1111 flow. Second operand 40 states and 8904 transitions. [2023-08-27 06:18:14,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 450 transitions, 4749 flow [2023-08-27 06:18:14,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 450 transitions, 4486 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-08-27 06:18:14,159 INFO L231 Difference]: Finished difference. Result has 167 places, 243 transitions, 2868 flow [2023-08-27 06:18:14,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2868, PETRI_PLACES=167, PETRI_TRANSITIONS=243} [2023-08-27 06:18:14,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2023-08-27 06:18:14,160 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 243 transitions, 2868 flow [2023-08-27 06:18:14,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 218.92307692307693) internal successors, (5692), 26 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:14,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:14,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:14,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 06:18:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:14,368 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:14,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 639755987, now seen corresponding path program 4 times [2023-08-27 06:18:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:14,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306854219] [2023-08-27 06:18:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:15,243 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 06:18:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306854219] [2023-08-27 06:18:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306854219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748705838] [2023-08-27 06:18:15,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:18:15,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:15,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:15,249 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 06:18:15,252 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 06:18:15,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:18:15,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:15,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 06:18:15,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:15,854 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 124 treesize of output 80 [2023-08-27 06:18:15,936 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 06:18:15,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:17,310 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:17,311 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 290 treesize of output 182 [2023-08-27 06:18:17,420 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 06:18:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748705838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:17,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:18:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115230514] [2023-08-27 06:18:17,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:18:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:18:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:18:17,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:18:17,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 243 transitions, 2868 flow. Second operand has 20 states, 20 states have (on average 235.95) internal successors, (4719), 20 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:17,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:17,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:18:17,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:19,654 INFO L124 PetriNetUnfolderBase]: 1561/3590 cut-off events. [2023-08-27 06:18:19,655 INFO L125 PetriNetUnfolderBase]: For 24868/24868 co-relation queries the response was YES. [2023-08-27 06:18:19,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19105 conditions, 3590 events. 1561/3590 cut-off events. For 24868/24868 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30013 event pairs, 48 based on Foata normal form. 18/3608 useless extension candidates. Maximal degree in co-relation 19037. Up to 970 conditions per place. [2023-08-27 06:18:19,687 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 270 selfloop transitions, 131 changer transitions 25/426 dead transitions. [2023-08-27 06:18:19,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 426 transitions, 5469 flow [2023-08-27 06:18:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 06:18:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 06:18:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4782 transitions. [2023-08-27 06:18:19,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3325452016689847 [2023-08-27 06:18:19,695 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4782 transitions. [2023-08-27 06:18:19,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4782 transitions. [2023-08-27 06:18:19,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:19,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4782 transitions. [2023-08-27 06:18:19,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.1) internal successors, (4782), 20 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:19,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:19,711 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:19,711 INFO L175 Difference]: Start difference. First operand has 167 places, 243 transitions, 2868 flow. Second operand 20 states and 4782 transitions. [2023-08-27 06:18:19,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 426 transitions, 5469 flow [2023-08-27 06:18:19,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 426 transitions, 5055 flow, removed 184 selfloop flow, removed 9 redundant places. [2023-08-27 06:18:19,983 INFO L231 Difference]: Finished difference. Result has 183 places, 281 transitions, 3453 flow [2023-08-27 06:18:19,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3453, PETRI_PLACES=183, PETRI_TRANSITIONS=281} [2023-08-27 06:18:19,984 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2023-08-27 06:18:19,984 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 281 transitions, 3453 flow [2023-08-27 06:18:19,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 235.95) internal successors, (4719), 20 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:19,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:19,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:19,995 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 06:18:20,191 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,SelfDestructingSolverStorable30 [2023-08-27 06:18:20,191 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:20,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1948502667, now seen corresponding path program 5 times [2023-08-27 06:18:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503202337] [2023-08-27 06:18:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:21,507 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 06:18:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503202337] [2023-08-27 06:18:21,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503202337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985566484] [2023-08-27 06:18:21,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:18:21,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:21,509 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 06:18:21,510 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 06:18:21,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:18:21,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:21,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 06:18:21,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:21,916 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 77 treesize of output 49 [2023-08-27 06:18:21,964 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 06:18:21,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:23,190 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:23,191 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 398 treesize of output 254 [2023-08-27 06:18:23,520 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 06:18:23,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985566484] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:23,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:23,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 24 [2023-08-27 06:18:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285108987] [2023-08-27 06:18:23,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:18:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:18:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-08-27 06:18:23,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:18:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 281 transitions, 3453 flow. Second operand has 25 states, 25 states have (on average 218.76) internal successors, (5469), 25 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:18:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:25,896 INFO L124 PetriNetUnfolderBase]: 1555/3524 cut-off events. [2023-08-27 06:18:25,897 INFO L125 PetriNetUnfolderBase]: For 27641/27641 co-relation queries the response was YES. [2023-08-27 06:18:25,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19637 conditions, 3524 events. 1555/3524 cut-off events. For 27641/27641 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29046 event pairs, 364 based on Foata normal form. 2/3526 useless extension candidates. Maximal degree in co-relation 19564. Up to 989 conditions per place. [2023-08-27 06:18:25,926 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 314 selfloop transitions, 164 changer transitions 6/484 dead transitions. [2023-08-27 06:18:25,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 484 transitions, 6480 flow [2023-08-27 06:18:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 06:18:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 06:18:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6439 transitions. [2023-08-27 06:18:25,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.308810129010599 [2023-08-27 06:18:25,935 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6439 transitions. [2023-08-27 06:18:25,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6439 transitions. [2023-08-27 06:18:25,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:25,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6439 transitions. [2023-08-27 06:18:25,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 222.0344827586207) internal successors, (6439), 29 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:25,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:25,959 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:25,959 INFO L175 Difference]: Start difference. First operand has 183 places, 281 transitions, 3453 flow. Second operand 29 states and 6439 transitions. [2023-08-27 06:18:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 484 transitions, 6480 flow [2023-08-27 06:18:26,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 484 transitions, 5858 flow, removed 206 selfloop flow, removed 8 redundant places. [2023-08-27 06:18:26,240 INFO L231 Difference]: Finished difference. Result has 210 places, 337 transitions, 4177 flow [2023-08-27 06:18:26,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4177, PETRI_PLACES=210, PETRI_TRANSITIONS=337} [2023-08-27 06:18:26,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2023-08-27 06:18:26,242 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 337 transitions, 4177 flow [2023-08-27 06:18:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 218.76) internal successors, (5469), 25 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:26,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:26,243 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:26,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 06:18:26,449 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,SelfDestructingSolverStorable31 [2023-08-27 06:18:26,449 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:26,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1353005273, now seen corresponding path program 6 times [2023-08-27 06:18:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016890026] [2023-08-27 06:18:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:27,537 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 06:18:27,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:27,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016890026] [2023-08-27 06:18:27,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016890026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:27,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518829626] [2023-08-27 06:18:27,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:18:27,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:27,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:27,539 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 06:18:27,545 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 06:18:27,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:18:27,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:27,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 06:18:27,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:27,716 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 44 treesize of output 42 [2023-08-27 06:18:27,888 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 06:18:28,119 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 06:18:28,607 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 06:18:28,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:31,201 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:31,201 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 463 treesize of output 359 [2023-08-27 06:18:31,212 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 270 treesize of output 266 [2023-08-27 06:18:31,221 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 266 treesize of output 264 [2023-08-27 06:18:31,230 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 264 treesize of output 260 [2023-08-27 06:18:31,240 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 260 treesize of output 258 [2023-08-27 06:18:31,250 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 258 treesize of output 254 [2023-08-27 06:18:31,698 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 06:18:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518829626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:31,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:31,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 06:18:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969873889] [2023-08-27 06:18:31,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:31,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:18:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:18:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=568, Unknown=5, NotChecked=0, Total=650 [2023-08-27 06:18:31,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 719 [2023-08-27 06:18:31,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 337 transitions, 4177 flow. Second operand has 26 states, 26 states have (on average 231.73076923076923) internal successors, (6025), 26 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:31,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:31,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 719 [2023-08-27 06:18:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:40,277 INFO L124 PetriNetUnfolderBase]: 1691/3846 cut-off events. [2023-08-27 06:18:40,277 INFO L125 PetriNetUnfolderBase]: For 27289/27289 co-relation queries the response was YES. [2023-08-27 06:18:40,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 3846 events. 1691/3846 cut-off events. For 27289/27289 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 32397 event pairs, 304 based on Foata normal form. 14/3860 useless extension candidates. Maximal degree in co-relation 20523. Up to 862 conditions per place. [2023-08-27 06:18:40,313 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 304 selfloop transitions, 275 changer transitions 20/599 dead transitions. [2023-08-27 06:18:40,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 599 transitions, 8130 flow [2023-08-27 06:18:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 06:18:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 06:18:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6833 transitions. [2023-08-27 06:18:40,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277061052227711 [2023-08-27 06:18:40,325 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6833 transitions. [2023-08-27 06:18:40,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6833 transitions. [2023-08-27 06:18:40,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:40,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6833 transitions. [2023-08-27 06:18:40,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 235.6206896551724) internal successors, (6833), 29 states have internal predecessors, (6833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:40,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:40,351 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:40,351 INFO L175 Difference]: Start difference. First operand has 210 places, 337 transitions, 4177 flow. Second operand 29 states and 6833 transitions. [2023-08-27 06:18:40,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 599 transitions, 8130 flow [2023-08-27 06:18:40,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 599 transitions, 7762 flow, removed 126 selfloop flow, removed 6 redundant places. [2023-08-27 06:18:40,658 INFO L231 Difference]: Finished difference. Result has 247 places, 455 transitions, 6426 flow [2023-08-27 06:18:40,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6426, PETRI_PLACES=247, PETRI_TRANSITIONS=455} [2023-08-27 06:18:40,658 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2023-08-27 06:18:40,658 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 455 transitions, 6426 flow [2023-08-27 06:18:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 231.73076923076923) internal successors, (6025), 26 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:40,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:40,660 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:40,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 06:18:40,865 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,SelfDestructingSolverStorable32 [2023-08-27 06:18:40,866 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:40,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash 795051939, now seen corresponding path program 7 times [2023-08-27 06:18:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:40,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120211245] [2023-08-27 06:18:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:41,659 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 06:18:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120211245] [2023-08-27 06:18:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120211245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022463594] [2023-08-27 06:18:41,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:18:41,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:41,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:41,662 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 06:18:41,665 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 06:18:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:41,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 06:18:41,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:42,185 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 185 treesize of output 117 [2023-08-27 06:18:42,263 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 06:18:42,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:44,071 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:44,072 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 474 treesize of output 322 [2023-08-27 06:18:44,684 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 06:18:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022463594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:44,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:44,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-27 06:18:44,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077164660] [2023-08-27 06:18:44,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:18:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:18:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:18:44,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:18:44,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 455 transitions, 6426 flow. Second operand has 21 states, 21 states have (on average 235.95238095238096) internal successors, (4955), 21 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:44,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:44,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:18:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:18:47,457 INFO L124 PetriNetUnfolderBase]: 1797/4060 cut-off events. [2023-08-27 06:18:47,458 INFO L125 PetriNetUnfolderBase]: For 35732/35732 co-relation queries the response was YES. [2023-08-27 06:18:47,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24066 conditions, 4060 events. 1797/4060 cut-off events. For 35732/35732 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34312 event pairs, 310 based on Foata normal form. 10/4070 useless extension candidates. Maximal degree in co-relation 23970. Up to 1652 conditions per place. [2023-08-27 06:18:47,491 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 254 selfloop transitions, 296 changer transitions 22/572 dead transitions. [2023-08-27 06:18:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 572 transitions, 8908 flow [2023-08-27 06:18:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 06:18:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 06:18:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4783 transitions. [2023-08-27 06:18:47,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3326147426981919 [2023-08-27 06:18:47,497 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4783 transitions. [2023-08-27 06:18:47,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4783 transitions. [2023-08-27 06:18:47,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:18:47,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4783 transitions. [2023-08-27 06:18:47,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.15) internal successors, (4783), 20 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:47,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:47,514 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:47,514 INFO L175 Difference]: Start difference. First operand has 247 places, 455 transitions, 6426 flow. Second operand 20 states and 4783 transitions. [2023-08-27 06:18:47,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 572 transitions, 8908 flow [2023-08-27 06:18:47,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 572 transitions, 8385 flow, removed 166 selfloop flow, removed 5 redundant places. [2023-08-27 06:18:47,951 INFO L231 Difference]: Finished difference. Result has 270 places, 504 transitions, 7624 flow [2023-08-27 06:18:47,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7624, PETRI_PLACES=270, PETRI_TRANSITIONS=504} [2023-08-27 06:18:47,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2023-08-27 06:18:47,952 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 504 transitions, 7624 flow [2023-08-27 06:18:47,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 235.95238095238096) internal successors, (4955), 21 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:47,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:18:47,953 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:18:47,963 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 06:18:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:48,159 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:18:48,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:18:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1210002611, now seen corresponding path program 8 times [2023-08-27 06:18:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:18:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613957417] [2023-08-27 06:18:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:18:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:18:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:18:49,600 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 06:18:49,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:18:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613957417] [2023-08-27 06:18:49,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613957417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:18:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463833407] [2023-08-27 06:18:49,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:18:49,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:18:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:18:49,601 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 06:18:49,602 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 06:18:49,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:18:49,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:18:49,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 06:18:49,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:18:50,023 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 194 treesize of output 126 [2023-08-27 06:18:50,397 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 06:18:50,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:18:52,260 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:18:52,260 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 471 treesize of output 327 [2023-08-27 06:18:53,073 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 06:18:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463833407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:18:53,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:18:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-27 06:18:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489460008] [2023-08-27 06:18:53,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:18:53,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:18:53,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:18:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:18:53,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:18:53,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:18:53,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 504 transitions, 7624 flow. Second operand has 24 states, 24 states have (on average 218.875) internal successors, (5253), 24 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:18:53,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:18:53,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:18:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:02,714 INFO L124 PetriNetUnfolderBase]: 1827/4118 cut-off events. [2023-08-27 06:19:02,714 INFO L125 PetriNetUnfolderBase]: For 44496/44496 co-relation queries the response was YES. [2023-08-27 06:19:02,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25632 conditions, 4118 events. 1827/4118 cut-off events. For 44496/44496 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 34871 event pairs, 310 based on Foata normal form. 6/4124 useless extension candidates. Maximal degree in co-relation 25526. Up to 830 conditions per place. [2023-08-27 06:19:02,749 INFO L140 encePairwiseOnDemand]: 708/719 looper letters, 418 selfloop transitions, 320 changer transitions 36/774 dead transitions. [2023-08-27 06:19:02,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 774 transitions, 11440 flow [2023-08-27 06:19:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-27 06:19:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-27 06:19:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 12196 transitions. [2023-08-27 06:19:02,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.308408142622329 [2023-08-27 06:19:02,760 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 12196 transitions. [2023-08-27 06:19:02,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 12196 transitions. [2023-08-27 06:19:02,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:02,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 12196 transitions. [2023-08-27 06:19:02,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 221.74545454545455) internal successors, (12196), 55 states have internal predecessors, (12196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:02,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 719.0) internal successors, (40264), 56 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:02,808 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 719.0) internal successors, (40264), 56 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:02,808 INFO L175 Difference]: Start difference. First operand has 270 places, 504 transitions, 7624 flow. Second operand 55 states and 12196 transitions. [2023-08-27 06:19:02,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 774 transitions, 11440 flow [2023-08-27 06:19:03,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 774 transitions, 10895 flow, removed 166 selfloop flow, removed 8 redundant places. [2023-08-27 06:19:03,339 INFO L231 Difference]: Finished difference. Result has 328 places, 525 transitions, 8240 flow [2023-08-27 06:19:03,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8240, PETRI_PLACES=328, PETRI_TRANSITIONS=525} [2023-08-27 06:19:03,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2023-08-27 06:19:03,339 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 525 transitions, 8240 flow [2023-08-27 06:19:03,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 218.875) internal successors, (5253), 24 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:03,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:03,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:03,345 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 06:19:03,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:03,541 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:03,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1811515811, now seen corresponding path program 9 times [2023-08-27 06:19:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:03,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127865159] [2023-08-27 06:19:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:04,471 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 06:19:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127865159] [2023-08-27 06:19:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127865159] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045277231] [2023-08-27 06:19:04,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:19:04,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:04,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:04,477 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 06:19:04,479 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 06:19:04,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:19:04,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:04,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 06:19:04,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:04,901 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 06:19:05,086 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 06:19:05,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:06,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:06,909 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 382 treesize of output 278 [2023-08-27 06:19:07,489 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 06:19:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045277231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:07,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-27 06:19:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572264221] [2023-08-27 06:19:07,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:19:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:19:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:19:07,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:19:07,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 525 transitions, 8240 flow. Second operand has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:07,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:07,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:19:07,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:11,173 INFO L124 PetriNetUnfolderBase]: 1945/4376 cut-off events. [2023-08-27 06:19:11,173 INFO L125 PetriNetUnfolderBase]: For 61974/61974 co-relation queries the response was YES. [2023-08-27 06:19:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29030 conditions, 4376 events. 1945/4376 cut-off events. For 61974/61974 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 37634 event pairs, 328 based on Foata normal form. 22/4398 useless extension candidates. Maximal degree in co-relation 28912. Up to 1780 conditions per place. [2023-08-27 06:19:11,213 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 372 selfloop transitions, 281 changer transitions 27/680 dead transitions. [2023-08-27 06:19:11,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 680 transitions, 11451 flow [2023-08-27 06:19:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:19:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:19:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5044 transitions. [2023-08-27 06:19:11,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3340618584012186 [2023-08-27 06:19:11,218 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5044 transitions. [2023-08-27 06:19:11,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5044 transitions. [2023-08-27 06:19:11,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:11,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5044 transitions. [2023-08-27 06:19:11,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 240.1904761904762) internal successors, (5044), 21 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:11,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 719.0) internal successors, (15818), 22 states have internal predecessors, (15818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:11,234 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 719.0) internal successors, (15818), 22 states have internal predecessors, (15818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:11,235 INFO L175 Difference]: Start difference. First operand has 328 places, 525 transitions, 8240 flow. Second operand 21 states and 5044 transitions. [2023-08-27 06:19:11,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 680 transitions, 11451 flow [2023-08-27 06:19:11,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 680 transitions, 11114 flow, removed 116 selfloop flow, removed 23 redundant places. [2023-08-27 06:19:11,879 INFO L231 Difference]: Finished difference. Result has 328 places, 567 transitions, 9439 flow [2023-08-27 06:19:11,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9439, PETRI_PLACES=328, PETRI_TRANSITIONS=567} [2023-08-27 06:19:11,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2023-08-27 06:19:11,880 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 567 transitions, 9439 flow [2023-08-27 06:19:11,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:11,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:11,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:11,885 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 06:19:12,081 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,SelfDestructingSolverStorable35 [2023-08-27 06:19:12,081 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:12,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1339197406, now seen corresponding path program 10 times [2023-08-27 06:19:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459836126] [2023-08-27 06:19:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:19:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459836126] [2023-08-27 06:19:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459836126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410963988] [2023-08-27 06:19:13,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:19:13,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:13,129 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 06:19:13,130 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 06:19:13,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:19:13,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:13,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:19:13,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:13,567 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 91 treesize of output 59 [2023-08-27 06:19:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:13,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:14,054 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:14,055 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 87 treesize of output 55 [2023-08-27 06:19:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410963988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:14,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-27 06:19:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569613529] [2023-08-27 06:19:14,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 06:19:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 06:19:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-08-27 06:19:14,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 719 [2023-08-27 06:19:14,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 567 transitions, 9439 flow. Second operand has 23 states, 23 states have (on average 229.95652173913044) internal successors, (5289), 23 states have internal predecessors, (5289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:14,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 719 [2023-08-27 06:19:14,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:16,908 INFO L124 PetriNetUnfolderBase]: 1914/4295 cut-off events. [2023-08-27 06:19:16,908 INFO L125 PetriNetUnfolderBase]: For 62756/62756 co-relation queries the response was YES. [2023-08-27 06:19:16,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29808 conditions, 4295 events. 1914/4295 cut-off events. For 62756/62756 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 36732 event pairs, 456 based on Foata normal form. 12/4307 useless extension candidates. Maximal degree in co-relation 29689. Up to 1127 conditions per place. [2023-08-27 06:19:16,950 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 517 selfloop transitions, 240 changer transitions 6/763 dead transitions. [2023-08-27 06:19:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 763 transitions, 13054 flow [2023-08-27 06:19:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 06:19:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 06:19:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7022 transitions. [2023-08-27 06:19:16,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255447380621233 [2023-08-27 06:19:16,958 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7022 transitions. [2023-08-27 06:19:16,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7022 transitions. [2023-08-27 06:19:16,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:16,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7022 transitions. [2023-08-27 06:19:16,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.06666666666666) internal successors, (7022), 30 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:16,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:16,981 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:16,982 INFO L175 Difference]: Start difference. First operand has 328 places, 567 transitions, 9439 flow. Second operand 30 states and 7022 transitions. [2023-08-27 06:19:16,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 763 transitions, 13054 flow [2023-08-27 06:19:17,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 763 transitions, 12365 flow, removed 278 selfloop flow, removed 12 redundant places. [2023-08-27 06:19:17,692 INFO L231 Difference]: Finished difference. Result has 350 places, 631 transitions, 10597 flow [2023-08-27 06:19:17,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=8944, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10597, PETRI_PLACES=350, PETRI_TRANSITIONS=631} [2023-08-27 06:19:17,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-27 06:19:17,693 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 631 transitions, 10597 flow [2023-08-27 06:19:17,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 229.95652173913044) internal successors, (5289), 23 states have internal predecessors, (5289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:17,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:17,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:17,699 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 06:19:17,896 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,SelfDestructingSolverStorable36 [2023-08-27 06:19:17,897 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:17,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1089490252, now seen corresponding path program 11 times [2023-08-27 06:19:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013979246] [2023-08-27 06:19:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013979246] [2023-08-27 06:19:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013979246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888945961] [2023-08-27 06:19:18,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:19:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:18,409 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 06:19:18,416 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 06:19:18,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:19:18,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:18,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 06:19:18,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:18,737 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 84 treesize of output 52 [2023-08-27 06:19:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:18,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:18,966 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:18,966 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 44 treesize of output 28 [2023-08-27 06:19:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:18,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888945961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:18,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:18,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-27 06:19:18,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864255757] [2023-08-27 06:19:18,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:19:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:19:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:19:18,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:18,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 631 transitions, 10597 flow. Second operand has 17 states, 17 states have (on average 247.11764705882354) internal successors, (4201), 17 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:18,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:18,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:20,471 INFO L124 PetriNetUnfolderBase]: 2035/4555 cut-off events. [2023-08-27 06:19:20,471 INFO L125 PetriNetUnfolderBase]: For 60020/60020 co-relation queries the response was YES. [2023-08-27 06:19:20,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31563 conditions, 4555 events. 2035/4555 cut-off events. For 60020/60020 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38816 event pairs, 480 based on Foata normal form. 52/4607 useless extension candidates. Maximal degree in co-relation 31441. Up to 1776 conditions per place. [2023-08-27 06:19:20,517 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 549 selfloop transitions, 181 changer transitions 0/730 dead transitions. [2023-08-27 06:19:20,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 730 transitions, 13363 flow [2023-08-27 06:19:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:19:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:19:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2275 transitions. [2023-08-27 06:19:20,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515685365476742 [2023-08-27 06:19:20,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2275 transitions. [2023-08-27 06:19:20,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2275 transitions. [2023-08-27 06:19:20,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:20,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2275 transitions. [2023-08-27 06:19:20,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.77777777777777) internal successors, (2275), 9 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:20,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 719.0) internal successors, (7190), 10 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:20,527 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 719.0) internal successors, (7190), 10 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:20,527 INFO L175 Difference]: Start difference. First operand has 350 places, 631 transitions, 10597 flow. Second operand 9 states and 2275 transitions. [2023-08-27 06:19:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 730 transitions, 13363 flow [2023-08-27 06:19:21,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 730 transitions, 13186 flow, removed 57 selfloop flow, removed 11 redundant places. [2023-08-27 06:19:21,215 INFO L231 Difference]: Finished difference. Result has 350 places, 651 transitions, 11323 flow [2023-08-27 06:19:21,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=10436, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11323, PETRI_PLACES=350, PETRI_TRANSITIONS=651} [2023-08-27 06:19:21,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-27 06:19:21,216 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 651 transitions, 11323 flow [2023-08-27 06:19:21,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.11764705882354) internal successors, (4201), 17 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:21,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:21,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:21,222 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 06:19:21,417 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,SelfDestructingSolverStorable37 [2023-08-27 06:19:21,418 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:21,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash -160917204, now seen corresponding path program 12 times [2023-08-27 06:19:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:21,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957981282] [2023-08-27 06:19:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:21,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957981282] [2023-08-27 06:19:21,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957981282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301671953] [2023-08-27 06:19:21,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:19:21,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:21,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:21,971 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 06:19:21,975 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 06:19:22,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:19:22,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:22,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:19:22,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:22,338 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 105 treesize of output 65 [2023-08-27 06:19:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:22,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:22,589 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 06:19:22,589 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 40 treesize of output 19 [2023-08-27 06:19:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301671953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:22,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2023-08-27 06:19:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648749830] [2023-08-27 06:19:22,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:19:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:19:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:19:22,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:22,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 651 transitions, 11323 flow. Second operand has 16 states, 16 states have (on average 247.125) internal successors, (3954), 16 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:22,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:22,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:22,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:24,449 INFO L124 PetriNetUnfolderBase]: 2063/4607 cut-off events. [2023-08-27 06:19:24,449 INFO L125 PetriNetUnfolderBase]: For 62019/62019 co-relation queries the response was YES. [2023-08-27 06:19:24,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32569 conditions, 4607 events. 2063/4607 cut-off events. For 62019/62019 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39385 event pairs, 313 based on Foata normal form. 36/4643 useless extension candidates. Maximal degree in co-relation 32446. Up to 890 conditions per place. [2023-08-27 06:19:24,498 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 517 selfloop transitions, 232 changer transitions 2/751 dead transitions. [2023-08-27 06:19:24,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 751 transitions, 14122 flow [2023-08-27 06:19:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:19:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:19:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3518 transitions. [2023-08-27 06:19:24,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494933439300616 [2023-08-27 06:19:24,501 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3518 transitions. [2023-08-27 06:19:24,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3518 transitions. [2023-08-27 06:19:24,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:24,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3518 transitions. [2023-08-27 06:19:24,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 251.28571428571428) internal successors, (3518), 14 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:24,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:24,511 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:24,511 INFO L175 Difference]: Start difference. First operand has 350 places, 651 transitions, 11323 flow. Second operand 14 states and 3518 transitions. [2023-08-27 06:19:24,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 751 transitions, 14122 flow [2023-08-27 06:19:25,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 751 transitions, 13897 flow, removed 43 selfloop flow, removed 4 redundant places. [2023-08-27 06:19:25,206 INFO L231 Difference]: Finished difference. Result has 360 places, 658 transitions, 11850 flow [2023-08-27 06:19:25,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=10973, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11850, PETRI_PLACES=360, PETRI_TRANSITIONS=658} [2023-08-27 06:19:25,207 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2023-08-27 06:19:25,207 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 658 transitions, 11850 flow [2023-08-27 06:19:25,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 247.125) internal successors, (3954), 16 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:25,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:25,208 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:25,213 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 06:19:25,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:25,408 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:25,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash 213215536, now seen corresponding path program 13 times [2023-08-27 06:19:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759530140] [2023-08-27 06:19:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759530140] [2023-08-27 06:19:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759530140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237914179] [2023-08-27 06:19:25,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:19:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:25,909 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 06:19:25,940 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 06:19:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:26,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:19:26,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:26,262 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 112 treesize of output 72 [2023-08-27 06:19:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:26,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:26,761 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 06:19:26,761 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 109 treesize of output 56 [2023-08-27 06:19:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:26,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237914179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:26,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-27 06:19:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835702536] [2023-08-27 06:19:26,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:26,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:19:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:26,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:19:26,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:19:26,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:26,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 658 transitions, 11850 flow. Second operand has 18 states, 18 states have (on average 247.22222222222223) internal successors, (4450), 18 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:26,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:26,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:26,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:29,338 INFO L124 PetriNetUnfolderBase]: 2011/4495 cut-off events. [2023-08-27 06:19:29,338 INFO L125 PetriNetUnfolderBase]: For 64575/64575 co-relation queries the response was YES. [2023-08-27 06:19:29,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32469 conditions, 4495 events. 2011/4495 cut-off events. For 64575/64575 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38118 event pairs, 318 based on Foata normal form. 16/4511 useless extension candidates. Maximal degree in co-relation 32344. Up to 1397 conditions per place. [2023-08-27 06:19:29,386 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 419 selfloop transitions, 320 changer transitions 17/756 dead transitions. [2023-08-27 06:19:29,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 756 transitions, 14366 flow [2023-08-27 06:19:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 06:19:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 06:19:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6485 transitions. [2023-08-27 06:19:29,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34690274954530864 [2023-08-27 06:19:29,392 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6485 transitions. [2023-08-27 06:19:29,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6485 transitions. [2023-08-27 06:19:29,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:29,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6485 transitions. [2023-08-27 06:19:29,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 249.42307692307693) internal successors, (6485), 26 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:29,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:29,411 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:29,411 INFO L175 Difference]: Start difference. First operand has 360 places, 658 transitions, 11850 flow. Second operand 26 states and 6485 transitions. [2023-08-27 06:19:29,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 756 transitions, 14366 flow [2023-08-27 06:19:30,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 756 transitions, 14133 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-08-27 06:19:30,085 INFO L231 Difference]: Finished difference. Result has 379 places, 675 transitions, 12607 flow [2023-08-27 06:19:30,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=11550, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12607, PETRI_PLACES=379, PETRI_TRANSITIONS=675} [2023-08-27 06:19:30,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2023-08-27 06:19:30,086 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 675 transitions, 12607 flow [2023-08-27 06:19:30,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.22222222222223) internal successors, (4450), 18 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:30,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:30,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:30,094 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 06:19:30,292 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,SelfDestructingSolverStorable39 [2023-08-27 06:19:30,293 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:30,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash -197313900, now seen corresponding path program 14 times [2023-08-27 06:19:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887484402] [2023-08-27 06:19:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887484402] [2023-08-27 06:19:30,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887484402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181966157] [2023-08-27 06:19:30,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:19:30,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:30,781 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:30,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 06:19:30,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:19:30,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:30,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:19:31,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:31,226 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 131 treesize of output 91 [2023-08-27 06:19:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:31,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:31,607 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:31,607 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 44 treesize of output 28 [2023-08-27 06:19:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:31,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181966157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:31,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:31,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-27 06:19:31,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169393679] [2023-08-27 06:19:31,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:31,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:19:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:19:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:19:31,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:31,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 675 transitions, 12607 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:31,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:31,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:31,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:33,859 INFO L124 PetriNetUnfolderBase]: 2003/4437 cut-off events. [2023-08-27 06:19:33,860 INFO L125 PetriNetUnfolderBase]: For 65002/65002 co-relation queries the response was YES. [2023-08-27 06:19:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33137 conditions, 4437 events. 2003/4437 cut-off events. For 65002/65002 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37188 event pairs, 518 based on Foata normal form. 16/4453 useless extension candidates. Maximal degree in co-relation 33012. Up to 1514 conditions per place. [2023-08-27 06:19:33,904 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 533 selfloop transitions, 219 changer transitions 0/752 dead transitions. [2023-08-27 06:19:33,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 752 transitions, 14958 flow [2023-08-27 06:19:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:19:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:19:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2023-08-27 06:19:33,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489323406692301 [2023-08-27 06:19:33,907 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2023-08-27 06:19:33,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2023-08-27 06:19:33,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:33,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2023-08-27 06:19:33,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:33,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:33,915 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:33,915 INFO L175 Difference]: Start difference. First operand has 379 places, 675 transitions, 12607 flow. Second operand 17 states and 4265 transitions. [2023-08-27 06:19:33,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 752 transitions, 14958 flow [2023-08-27 06:19:34,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 752 transitions, 14429 flow, removed 83 selfloop flow, removed 17 redundant places. [2023-08-27 06:19:34,558 INFO L231 Difference]: Finished difference. Result has 376 places, 683 transitions, 12788 flow [2023-08-27 06:19:34,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=11995, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12788, PETRI_PLACES=376, PETRI_TRANSITIONS=683} [2023-08-27 06:19:34,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2023-08-27 06:19:34,559 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 683 transitions, 12788 flow [2023-08-27 06:19:34,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:34,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:34,559 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:34,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:34,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:34,760 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:34,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:34,760 INFO L85 PathProgramCache]: Analyzing trace with hash -77584730, now seen corresponding path program 15 times [2023-08-27 06:19:34,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:34,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122921847] [2023-08-27 06:19:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122921847] [2023-08-27 06:19:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122921847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725416692] [2023-08-27 06:19:35,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:19:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:35,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:35,263 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:35,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 06:19:35,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:19:35,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:35,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:19:35,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:35,691 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 131 treesize of output 91 [2023-08-27 06:19:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:35,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:36,163 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:36,163 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 93 treesize of output 69 [2023-08-27 06:19:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725416692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:36,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2023-08-27 06:19:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788694517] [2023-08-27 06:19:36,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:19:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:19:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:19:36,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:36,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 683 transitions, 12788 flow. Second operand has 19 states, 19 states have (on average 247.05263157894737) internal successors, (4694), 19 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:36,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:36,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:38,954 INFO L124 PetriNetUnfolderBase]: 2131/4685 cut-off events. [2023-08-27 06:19:38,955 INFO L125 PetriNetUnfolderBase]: For 66666/66666 co-relation queries the response was YES. [2023-08-27 06:19:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34517 conditions, 4685 events. 2131/4685 cut-off events. For 66666/66666 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 39405 event pairs, 916 based on Foata normal form. 64/4749 useless extension candidates. Maximal degree in co-relation 34397. Up to 4033 conditions per place. [2023-08-27 06:19:39,101 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 665 selfloop transitions, 145 changer transitions 0/810 dead transitions. [2023-08-27 06:19:39,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 810 transitions, 16081 flow [2023-08-27 06:19:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 06:19:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 06:19:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6505 transitions. [2023-08-27 06:19:39,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3479726115331122 [2023-08-27 06:19:39,105 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6505 transitions. [2023-08-27 06:19:39,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6505 transitions. [2023-08-27 06:19:39,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:39,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6505 transitions. [2023-08-27 06:19:39,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 250.19230769230768) internal successors, (6505), 26 states have internal predecessors, (6505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:39,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:39,124 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:39,124 INFO L175 Difference]: Start difference. First operand has 376 places, 683 transitions, 12788 flow. Second operand 26 states and 6505 transitions. [2023-08-27 06:19:39,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 810 transitions, 16081 flow [2023-08-27 06:19:39,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 810 transitions, 15612 flow, removed 47 selfloop flow, removed 17 redundant places. [2023-08-27 06:19:39,849 INFO L231 Difference]: Finished difference. Result has 392 places, 726 transitions, 13883 flow [2023-08-27 06:19:39,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=12100, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13883, PETRI_PLACES=392, PETRI_TRANSITIONS=726} [2023-08-27 06:19:39,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2023-08-27 06:19:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 726 transitions, 13883 flow [2023-08-27 06:19:39,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.05263157894737) internal successors, (4694), 19 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:39,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:39,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:39,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:40,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:40,052 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:40,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2021166938, now seen corresponding path program 16 times [2023-08-27 06:19:40,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068730835] [2023-08-27 06:19:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:40,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:19:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068730835] [2023-08-27 06:19:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068730835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642885420] [2023-08-27 06:19:40,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:19:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:40,864 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:40,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 06:19:41,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:19:41,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:41,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:19:41,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:41,345 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 72 treesize of output 48 [2023-08-27 06:19:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:41,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:41,558 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:41,558 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 125 treesize of output 69 [2023-08-27 06:19:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642885420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:41,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 24 [2023-08-27 06:19:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406705328] [2023-08-27 06:19:41,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:19:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:19:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:19:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 719 [2023-08-27 06:19:41,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 726 transitions, 13883 flow. Second operand has 24 states, 24 states have (on average 223.0) internal successors, (5352), 24 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:41,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:41,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 719 [2023-08-27 06:19:41,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:43,392 INFO L124 PetriNetUnfolderBase]: 2111/4617 cut-off events. [2023-08-27 06:19:43,392 INFO L125 PetriNetUnfolderBase]: For 68277/68277 co-relation queries the response was YES. [2023-08-27 06:19:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34823 conditions, 4617 events. 2111/4617 cut-off events. For 68277/68277 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38548 event pairs, 1002 based on Foata normal form. 8/4625 useless extension candidates. Maximal degree in co-relation 34695. Up to 4341 conditions per place. [2023-08-27 06:19:43,445 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 643 selfloop transitions, 80 changer transitions 10/733 dead transitions. [2023-08-27 06:19:43,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 733 transitions, 15292 flow [2023-08-27 06:19:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:19:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:19:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2697 transitions. [2023-08-27 06:19:43,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.312586926286509 [2023-08-27 06:19:43,448 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2697 transitions. [2023-08-27 06:19:43,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2697 transitions. [2023-08-27 06:19:43,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:43,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2697 transitions. [2023-08-27 06:19:43,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 224.75) internal successors, (2697), 12 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:43,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:43,454 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:43,454 INFO L175 Difference]: Start difference. First operand has 392 places, 726 transitions, 13883 flow. Second operand 12 states and 2697 transitions. [2023-08-27 06:19:43,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 733 transitions, 15292 flow [2023-08-27 06:19:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 733 transitions, 14815 flow, removed 195 selfloop flow, removed 11 redundant places. [2023-08-27 06:19:44,280 INFO L231 Difference]: Finished difference. Result has 392 places, 711 transitions, 13282 flow [2023-08-27 06:19:44,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13248, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13282, PETRI_PLACES=392, PETRI_TRANSITIONS=711} [2023-08-27 06:19:44,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2023-08-27 06:19:44,281 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 711 transitions, 13282 flow [2023-08-27 06:19:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 223.0) internal successors, (5352), 24 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:44,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:44,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:44,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:44,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:44,482 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:44,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -869418786, now seen corresponding path program 17 times [2023-08-27 06:19:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:44,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339396831] [2023-08-27 06:19:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:44,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:44,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339396831] [2023-08-27 06:19:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339396831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:44,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281545419] [2023-08-27 06:19:44,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:19:44,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:44,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:44,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 06:19:45,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:19:45,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:45,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 06:19:45,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:45,350 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 61 treesize of output 37 [2023-08-27 06:19:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:45,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:45,653 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:45,653 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 117 treesize of output 61 [2023-08-27 06:19:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281545419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:45,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:19:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606032894] [2023-08-27 06:19:45,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:19:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:19:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:19:45,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:45,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 711 transitions, 13282 flow. Second operand has 19 states, 19 states have (on average 247.26315789473685) internal successors, (4698), 19 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:45,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:45,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:45,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:47,803 INFO L124 PetriNetUnfolderBase]: 2095/4573 cut-off events. [2023-08-27 06:19:47,803 INFO L125 PetriNetUnfolderBase]: For 66548/66548 co-relation queries the response was YES. [2023-08-27 06:19:47,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34175 conditions, 4573 events. 2095/4573 cut-off events. For 66548/66548 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 38023 event pairs, 178 based on Foata normal form. 8/4581 useless extension candidates. Maximal degree in co-relation 34052. Up to 1126 conditions per place. [2023-08-27 06:19:47,858 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 389 selfloop transitions, 360 changer transitions 10/759 dead transitions. [2023-08-27 06:19:47,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 759 transitions, 15263 flow [2023-08-27 06:19:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 06:19:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 06:19:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4486 transitions. [2023-08-27 06:19:47,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34662339669293774 [2023-08-27 06:19:47,862 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4486 transitions. [2023-08-27 06:19:47,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4486 transitions. [2023-08-27 06:19:47,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:47,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4486 transitions. [2023-08-27 06:19:47,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 249.22222222222223) internal successors, (4486), 18 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:47,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:47,870 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:47,870 INFO L175 Difference]: Start difference. First operand has 392 places, 711 transitions, 13282 flow. Second operand 18 states and 4486 transitions. [2023-08-27 06:19:47,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 759 transitions, 15263 flow [2023-08-27 06:19:48,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 759 transitions, 15107 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-27 06:19:48,630 INFO L231 Difference]: Finished difference. Result has 394 places, 719 transitions, 14053 flow [2023-08-27 06:19:48,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13080, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14053, PETRI_PLACES=394, PETRI_TRANSITIONS=719} [2023-08-27 06:19:48,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2023-08-27 06:19:48,631 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 719 transitions, 14053 flow [2023-08-27 06:19:48,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.26315789473685) internal successors, (4698), 19 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:48,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:48,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:48,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:48,838 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:48,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -424679998, now seen corresponding path program 18 times [2023-08-27 06:19:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945340370] [2023-08-27 06:19:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:49,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945340370] [2023-08-27 06:19:49,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945340370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:49,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288065369] [2023-08-27 06:19:49,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:19:49,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:49,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:49,325 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:49,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 06:19:49,531 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:19:49,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:49,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 06:19:49,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:49,714 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 84 treesize of output 52 [2023-08-27 06:19:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:49,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:50,094 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:50,095 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 94 treesize of output 70 [2023-08-27 06:19:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288065369] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:50,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:19:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418999280] [2023-08-27 06:19:50,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:50,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:19:50,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:19:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:19:50,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:50,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 719 transitions, 14053 flow. Second operand has 19 states, 19 states have (on average 247.1578947368421) internal successors, (4696), 19 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:52,074 INFO L124 PetriNetUnfolderBase]: 2031/4413 cut-off events. [2023-08-27 06:19:52,074 INFO L125 PetriNetUnfolderBase]: For 70674/70674 co-relation queries the response was YES. [2023-08-27 06:19:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34362 conditions, 4413 events. 2031/4413 cut-off events. For 70674/70674 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36273 event pairs, 328 based on Foata normal form. 16/4429 useless extension candidates. Maximal degree in co-relation 34239. Up to 1510 conditions per place. [2023-08-27 06:19:52,121 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 460 selfloop transitions, 278 changer transitions 0/738 dead transitions. [2023-08-27 06:19:52,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 738 transitions, 15531 flow [2023-08-27 06:19:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:19:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:19:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3005 transitions. [2023-08-27 06:19:52,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34828465461288827 [2023-08-27 06:19:52,124 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3005 transitions. [2023-08-27 06:19:52,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3005 transitions. [2023-08-27 06:19:52,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:52,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3005 transitions. [2023-08-27 06:19:52,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.41666666666666) internal successors, (3005), 12 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:52,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:52,130 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:52,130 INFO L175 Difference]: Start difference. First operand has 394 places, 719 transitions, 14053 flow. Second operand 12 states and 3005 transitions. [2023-08-27 06:19:52,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 738 transitions, 15531 flow [2023-08-27 06:19:52,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 738 transitions, 15304 flow, removed 36 selfloop flow, removed 11 redundant places. [2023-08-27 06:19:52,899 INFO L231 Difference]: Finished difference. Result has 386 places, 709 transitions, 14190 flow [2023-08-27 06:19:52,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13528, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14190, PETRI_PLACES=386, PETRI_TRANSITIONS=709} [2023-08-27 06:19:52,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2023-08-27 06:19:52,900 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 709 transitions, 14190 flow [2023-08-27 06:19:52,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.1578947368421) internal successors, (4696), 19 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:52,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:52,901 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:52,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:53,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 06:19:53,107 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:53,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1135991514, now seen corresponding path program 19 times [2023-08-27 06:19:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196416301] [2023-08-27 06:19:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:53,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196416301] [2023-08-27 06:19:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196416301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026415904] [2023-08-27 06:19:53,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:19:53,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:53,568 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:53,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 06:19:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:53,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:19:53,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:53,939 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 133 treesize of output 93 [2023-08-27 06:19:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:54,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:54,521 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:54,521 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 44 treesize of output 28 [2023-08-27 06:19:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026415904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:54,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:54,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-27 06:19:54,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215215164] [2023-08-27 06:19:54,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:19:54,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:19:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:19:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:19:54,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 709 transitions, 14190 flow. Second operand has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:54,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:54,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:19:54,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:19:56,784 INFO L124 PetriNetUnfolderBase]: 2083/4537 cut-off events. [2023-08-27 06:19:56,785 INFO L125 PetriNetUnfolderBase]: For 75599/75599 co-relation queries the response was YES. [2023-08-27 06:19:56,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35781 conditions, 4537 events. 2083/4537 cut-off events. For 75599/75599 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 37692 event pairs, 106 based on Foata normal form. 8/4545 useless extension candidates. Maximal degree in co-relation 35659. Up to 2137 conditions per place. [2023-08-27 06:19:56,843 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 517 selfloop transitions, 310 changer transitions 0/827 dead transitions. [2023-08-27 06:19:56,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 827 transitions, 17690 flow [2023-08-27 06:19:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 06:19:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 06:19:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4507 transitions. [2023-08-27 06:19:56,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34824602070777316 [2023-08-27 06:19:56,941 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4507 transitions. [2023-08-27 06:19:56,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4507 transitions. [2023-08-27 06:19:56,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:19:56,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4507 transitions. [2023-08-27 06:19:56,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.38888888888889) internal successors, (4507), 18 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:56,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:56,950 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:56,950 INFO L175 Difference]: Start difference. First operand has 386 places, 709 transitions, 14190 flow. Second operand 18 states and 4507 transitions. [2023-08-27 06:19:56,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 827 transitions, 17690 flow [2023-08-27 06:19:57,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 827 transitions, 17311 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 06:19:57,616 INFO L231 Difference]: Finished difference. Result has 400 places, 724 transitions, 14926 flow [2023-08-27 06:19:57,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13858, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14926, PETRI_PLACES=400, PETRI_TRANSITIONS=724} [2023-08-27 06:19:57,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2023-08-27 06:19:57,617 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 724 transitions, 14926 flow [2023-08-27 06:19:57,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:57,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:19:57,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:19:57,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 06:19:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-27 06:19:57,818 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:19:57,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:19:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1809309462, now seen corresponding path program 20 times [2023-08-27 06:19:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:19:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826295446] [2023-08-27 06:19:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:19:57,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:19:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:19:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:19:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:19:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826295446] [2023-08-27 06:19:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826295446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:19:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619071024] [2023-08-27 06:19:58,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:19:58,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:19:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:19:58,460 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:19:58,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 06:19:58,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:19:58,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:19:58,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:19:58,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:19:58,840 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 105 treesize of output 65 [2023-08-27 06:19:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:58,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:19:59,193 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:19:59,194 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 44 treesize of output 28 [2023-08-27 06:19:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:19:59,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619071024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:19:59,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:19:59,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-27 06:19:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096692160] [2023-08-27 06:19:59,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:19:59,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 06:19:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:19:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 06:19:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-08-27 06:19:59,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-27 06:19:59,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 724 transitions, 14926 flow. Second operand has 23 states, 23 states have (on average 233.91304347826087) internal successors, (5380), 23 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:19:59,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:19:59,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-27 06:19:59,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:01,186 INFO L124 PetriNetUnfolderBase]: 2121/4603 cut-off events. [2023-08-27 06:20:01,186 INFO L125 PetriNetUnfolderBase]: For 78631/78631 co-relation queries the response was YES. [2023-08-27 06:20:01,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37085 conditions, 4603 events. 2121/4603 cut-off events. For 78631/78631 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38260 event pairs, 54 based on Foata normal form. 8/4611 useless extension candidates. Maximal degree in co-relation 36959. Up to 1273 conditions per place. [2023-08-27 06:20:01,242 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 456 selfloop transitions, 374 changer transitions 0/830 dead transitions. [2023-08-27 06:20:01,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 830 transitions, 18392 flow [2023-08-27 06:20:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:20:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:20:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3549 transitions. [2023-08-27 06:20:01,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32906815020862307 [2023-08-27 06:20:01,245 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3549 transitions. [2023-08-27 06:20:01,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3549 transitions. [2023-08-27 06:20:01,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:01,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3549 transitions. [2023-08-27 06:20:01,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 236.6) internal successors, (3549), 15 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:01,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:01,254 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:01,254 INFO L175 Difference]: Start difference. First operand has 400 places, 724 transitions, 14926 flow. Second operand 15 states and 3549 transitions. [2023-08-27 06:20:01,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 830 transitions, 18392 flow [2023-08-27 06:20:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 830 transitions, 18083 flow, removed 57 selfloop flow, removed 11 redundant places. [2023-08-27 06:20:02,010 INFO L231 Difference]: Finished difference. Result has 405 places, 744 transitions, 15904 flow [2023-08-27 06:20:02,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=14649, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15904, PETRI_PLACES=405, PETRI_TRANSITIONS=744} [2023-08-27 06:20:02,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2023-08-27 06:20:02,011 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 744 transitions, 15904 flow [2023-08-27 06:20:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 233.91304347826087) internal successors, (5380), 23 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:02,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:02,012 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:02,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:02,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 06:20:02,219 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:02,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash -273912086, now seen corresponding path program 21 times [2023-08-27 06:20:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694690751] [2023-08-27 06:20:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:20:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694690751] [2023-08-27 06:20:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694690751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386356961] [2023-08-27 06:20:02,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:20:02,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:02,902 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:02,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 06:20:03,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:20:03,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:03,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:03,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:03,396 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 82 treesize of output 50 [2023-08-27 06:20:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:03,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:03,748 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:03,748 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 125 treesize of output 69 [2023-08-27 06:20:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386356961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:03,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2023-08-27 06:20:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851035864] [2023-08-27 06:20:03,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:20:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:20:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-27 06:20:03,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-27 06:20:03,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 744 transitions, 15904 flow. Second operand has 25 states, 25 states have (on average 233.96) internal successors, (5849), 25 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:03,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:03,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-27 06:20:03,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:05,898 INFO L124 PetriNetUnfolderBase]: 2111/4597 cut-off events. [2023-08-27 06:20:05,898 INFO L125 PetriNetUnfolderBase]: For 87411/87411 co-relation queries the response was YES. [2023-08-27 06:20:05,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38428 conditions, 4597 events. 2111/4597 cut-off events. For 87411/87411 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38270 event pairs, 423 based on Foata normal form. 24/4621 useless extension candidates. Maximal degree in co-relation 38302. Up to 2237 conditions per place. [2023-08-27 06:20:05,946 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 467 selfloop transitions, 312 changer transitions 10/789 dead transitions. [2023-08-27 06:20:05,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 789 transitions, 17972 flow [2023-08-27 06:20:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:20:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:20:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3788 transitions. [2023-08-27 06:20:05,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3292767732962448 [2023-08-27 06:20:05,949 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3788 transitions. [2023-08-27 06:20:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3788 transitions. [2023-08-27 06:20:05,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:05,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3788 transitions. [2023-08-27 06:20:05,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 236.75) internal successors, (3788), 16 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:05,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 719.0) internal successors, (12223), 17 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:05,956 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 719.0) internal successors, (12223), 17 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:05,956 INFO L175 Difference]: Start difference. First operand has 405 places, 744 transitions, 15904 flow. Second operand 16 states and 3788 transitions. [2023-08-27 06:20:05,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 789 transitions, 17972 flow [2023-08-27 06:20:06,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 789 transitions, 17548 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-27 06:20:06,682 INFO L231 Difference]: Finished difference. Result has 417 places, 742 transitions, 16504 flow [2023-08-27 06:20:06,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=15343, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16504, PETRI_PLACES=417, PETRI_TRANSITIONS=742} [2023-08-27 06:20:06,683 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-27 06:20:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 742 transitions, 16504 flow [2023-08-27 06:20:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 233.96) internal successors, (5849), 25 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:06,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:06,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:06,884 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:06,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1242523750, now seen corresponding path program 22 times [2023-08-27 06:20:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973553196] [2023-08-27 06:20:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973553196] [2023-08-27 06:20:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973553196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733532228] [2023-08-27 06:20:07,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:20:07,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:07,309 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:07,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 06:20:07,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:20:07,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:07,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:20:07,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:07,815 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 112 treesize of output 80 [2023-08-27 06:20:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:07,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:08,188 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:08,189 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 117 treesize of output 69 [2023-08-27 06:20:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733532228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:08,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-27 06:20:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866875848] [2023-08-27 06:20:08,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:20:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:20:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:20:08,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:08,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 742 transitions, 16504 flow. Second operand has 20 states, 20 states have (on average 247.3) internal successors, (4946), 20 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:08,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:08,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:08,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:10,221 INFO L124 PetriNetUnfolderBase]: 2139/4649 cut-off events. [2023-08-27 06:20:10,222 INFO L125 PetriNetUnfolderBase]: For 94782/94782 co-relation queries the response was YES. [2023-08-27 06:20:10,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40556 conditions, 4649 events. 2139/4649 cut-off events. For 94782/94782 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 39023 event pairs, 543 based on Foata normal form. 24/4673 useless extension candidates. Maximal degree in co-relation 40426. Up to 2681 conditions per place. [2023-08-27 06:20:10,279 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 551 selfloop transitions, 261 changer transitions 2/814 dead transitions. [2023-08-27 06:20:10,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 814 transitions, 19258 flow [2023-08-27 06:20:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:20:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:20:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2512 transitions. [2023-08-27 06:20:10,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493741307371349 [2023-08-27 06:20:10,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2512 transitions. [2023-08-27 06:20:10,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2512 transitions. [2023-08-27 06:20:10,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:10,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2512 transitions. [2023-08-27 06:20:10,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.2) internal successors, (2512), 10 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:10,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:10,286 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:10,286 INFO L175 Difference]: Start difference. First operand has 417 places, 742 transitions, 16504 flow. Second operand 10 states and 2512 transitions. [2023-08-27 06:20:10,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 814 transitions, 19258 flow [2023-08-27 06:20:11,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 814 transitions, 18890 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-08-27 06:20:11,207 INFO L231 Difference]: Finished difference. Result has 413 places, 746 transitions, 16813 flow [2023-08-27 06:20:11,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16142, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16813, PETRI_PLACES=413, PETRI_TRANSITIONS=746} [2023-08-27 06:20:11,208 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2023-08-27 06:20:11,208 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 746 transitions, 16813 flow [2023-08-27 06:20:11,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 247.3) internal successors, (4946), 20 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:11,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:11,209 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:11,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-27 06:20:11,415 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:11,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash 13674602, now seen corresponding path program 23 times [2023-08-27 06:20:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768031217] [2023-08-27 06:20:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:11,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768031217] [2023-08-27 06:20:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768031217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297486685] [2023-08-27 06:20:11,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:20:11,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:11,815 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:11,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 06:20:12,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:20:12,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:12,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:20:12,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:12,231 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 84 treesize of output 52 [2023-08-27 06:20:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:12,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:12,599 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:12,599 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 90 treesize of output 66 [2023-08-27 06:20:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:12,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297486685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:12,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:12,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:20:12,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148583127] [2023-08-27 06:20:12,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:20:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:20:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:20:12,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:12,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 746 transitions, 16813 flow. Second operand has 19 states, 19 states have (on average 247.21052631578948) internal successors, (4697), 19 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:12,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:12,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:12,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:14,631 INFO L124 PetriNetUnfolderBase]: 2135/4625 cut-off events. [2023-08-27 06:20:14,631 INFO L125 PetriNetUnfolderBase]: For 99014/99014 co-relation queries the response was YES. [2023-08-27 06:20:14,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40752 conditions, 4625 events. 2135/4625 cut-off events. For 99014/99014 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 38355 event pairs, 360 based on Foata normal form. 16/4641 useless extension candidates. Maximal degree in co-relation 40621. Up to 1580 conditions per place. [2023-08-27 06:20:14,691 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 478 selfloop transitions, 308 changer transitions 0/786 dead transitions. [2023-08-27 06:20:14,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 786 transitions, 18753 flow [2023-08-27 06:20:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:20:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:20:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3254 transitions. [2023-08-27 06:20:14,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34813309083128274 [2023-08-27 06:20:14,694 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3254 transitions. [2023-08-27 06:20:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3254 transitions. [2023-08-27 06:20:14,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:14,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3254 transitions. [2023-08-27 06:20:14,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.30769230769232) internal successors, (3254), 13 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:14,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:14,700 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:14,700 INFO L175 Difference]: Start difference. First operand has 413 places, 746 transitions, 16813 flow. Second operand 13 states and 3254 transitions. [2023-08-27 06:20:14,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 786 transitions, 18753 flow [2023-08-27 06:20:15,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 786 transitions, 18384 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-27 06:20:15,662 INFO L231 Difference]: Finished difference. Result has 414 places, 744 transitions, 17100 flow [2023-08-27 06:20:15,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17100, PETRI_PLACES=414, PETRI_TRANSITIONS=744} [2023-08-27 06:20:15,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2023-08-27 06:20:15,664 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 744 transitions, 17100 flow [2023-08-27 06:20:15,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.21052631578948) internal successors, (4697), 19 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:15,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:15,665 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:15,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:15,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 06:20:15,865 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:15,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1052260274, now seen corresponding path program 24 times [2023-08-27 06:20:15,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:15,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182941565] [2023-08-27 06:20:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:15,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182941565] [2023-08-27 06:20:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182941565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:16,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701470376] [2023-08-27 06:20:16,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:20:16,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:16,249 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:16,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 06:20:16,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:20:16,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:16,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:16,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:16,618 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 112 treesize of output 72 [2023-08-27 06:20:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:16,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:16,903 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 06:20:16,903 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 79 treesize of output 42 [2023-08-27 06:20:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701470376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:16,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-27 06:20:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340324713] [2023-08-27 06:20:16,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:20:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:20:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:20:16,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 744 transitions, 17100 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:18,867 INFO L124 PetriNetUnfolderBase]: 2123/4581 cut-off events. [2023-08-27 06:20:18,867 INFO L125 PetriNetUnfolderBase]: For 99448/99448 co-relation queries the response was YES. [2023-08-27 06:20:18,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40808 conditions, 4581 events. 2123/4581 cut-off events. For 99448/99448 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 37826 event pairs, 235 based on Foata normal form. 4/4585 useless extension candidates. Maximal degree in co-relation 40677. Up to 1555 conditions per place. [2023-08-27 06:20:18,920 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 464 selfloop transitions, 347 changer transitions 5/816 dead transitions. [2023-08-27 06:20:18,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 816 transitions, 19717 flow [2023-08-27 06:20:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:20:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:20:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3257 transitions. [2023-08-27 06:20:18,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484540494276238 [2023-08-27 06:20:18,923 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3257 transitions. [2023-08-27 06:20:18,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3257 transitions. [2023-08-27 06:20:18,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:18,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3257 transitions. [2023-08-27 06:20:18,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.53846153846155) internal successors, (3257), 13 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:18,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:18,929 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:18,929 INFO L175 Difference]: Start difference. First operand has 414 places, 744 transitions, 17100 flow. Second operand 13 states and 3257 transitions. [2023-08-27 06:20:18,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 816 transitions, 19717 flow [2023-08-27 06:20:19,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 816 transitions, 19263 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-08-27 06:20:19,771 INFO L231 Difference]: Finished difference. Result has 416 places, 740 transitions, 17276 flow [2023-08-27 06:20:19,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16623, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17276, PETRI_PLACES=416, PETRI_TRANSITIONS=740} [2023-08-27 06:20:19,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2023-08-27 06:20:19,772 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 740 transitions, 17276 flow [2023-08-27 06:20:19,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:19,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:19,772 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:19,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:19,973 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:19,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1087876, now seen corresponding path program 25 times [2023-08-27 06:20:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916128155] [2023-08-27 06:20:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916128155] [2023-08-27 06:20:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916128155] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873736809] [2023-08-27 06:20:20,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:20:20,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:20,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:20,532 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:20,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 06:20:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:20,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:20,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:20,879 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 112 treesize of output 72 [2023-08-27 06:20:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:20,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:21,294 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:21,295 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 44 treesize of output 28 [2023-08-27 06:20:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:21,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873736809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:21,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:21,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-27 06:20:21,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292520333] [2023-08-27 06:20:21,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:21,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:20:21,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:20:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:20:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:21,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 740 transitions, 17276 flow. Second operand has 18 states, 18 states have (on average 246.94444444444446) internal successors, (4445), 18 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:21,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:21,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:21,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:23,597 INFO L124 PetriNetUnfolderBase]: 2081/4495 cut-off events. [2023-08-27 06:20:23,597 INFO L125 PetriNetUnfolderBase]: For 99317/99317 co-relation queries the response was YES. [2023-08-27 06:20:23,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40866 conditions, 4495 events. 2081/4495 cut-off events. For 99317/99317 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 36992 event pairs, 60 based on Foata normal form. 16/4511 useless extension candidates. Maximal degree in co-relation 40735. Up to 1189 conditions per place. [2023-08-27 06:20:23,658 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 424 selfloop transitions, 399 changer transitions 7/830 dead transitions. [2023-08-27 06:20:23,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 830 transitions, 20259 flow [2023-08-27 06:20:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 06:20:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 06:20:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4499 transitions. [2023-08-27 06:20:23,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34762787822593105 [2023-08-27 06:20:23,662 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4499 transitions. [2023-08-27 06:20:23,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4499 transitions. [2023-08-27 06:20:23,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:23,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4499 transitions. [2023-08-27 06:20:23,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 249.94444444444446) internal successors, (4499), 18 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:23,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:23,670 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:23,670 INFO L175 Difference]: Start difference. First operand has 416 places, 740 transitions, 17276 flow. Second operand 18 states and 4499 transitions. [2023-08-27 06:20:23,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 830 transitions, 20259 flow [2023-08-27 06:20:24,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 830 transitions, 19518 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-08-27 06:20:24,523 INFO L231 Difference]: Finished difference. Result has 417 places, 734 transitions, 17231 flow [2023-08-27 06:20:24,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16423, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17231, PETRI_PLACES=417, PETRI_TRANSITIONS=734} [2023-08-27 06:20:24,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-27 06:20:24,524 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 734 transitions, 17231 flow [2023-08-27 06:20:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 246.94444444444446) internal successors, (4445), 18 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:24,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:24,525 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:24,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:24,725 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:24,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1252811518, now seen corresponding path program 26 times [2023-08-27 06:20:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041871432] [2023-08-27 06:20:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041871432] [2023-08-27 06:20:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041871432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076916324] [2023-08-27 06:20:25,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:20:25,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:25,078 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:25,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 06:20:25,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:20:25,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:25,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:25,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:25,485 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 105 treesize of output 65 [2023-08-27 06:20:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:25,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:25,753 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:25,754 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 70 treesize of output 46 [2023-08-27 06:20:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076916324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:25,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:25,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-27 06:20:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398966014] [2023-08-27 06:20:25,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:25,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:20:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:20:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:20:25,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:25,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 734 transitions, 17231 flow. Second operand has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:25,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:25,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:25,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:27,507 INFO L124 PetriNetUnfolderBase]: 2075/4453 cut-off events. [2023-08-27 06:20:27,507 INFO L125 PetriNetUnfolderBase]: For 101764/101764 co-relation queries the response was YES. [2023-08-27 06:20:27,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40973 conditions, 4453 events. 2075/4453 cut-off events. For 101764/101764 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36303 event pairs, 441 based on Foata normal form. 32/4485 useless extension candidates. Maximal degree in co-relation 40845. Up to 2313 conditions per place. [2023-08-27 06:20:27,563 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 470 selfloop transitions, 291 changer transitions 0/761 dead transitions. [2023-08-27 06:20:27,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 761 transitions, 18958 flow [2023-08-27 06:20:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:20:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:20:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2506 transitions. [2023-08-27 06:20:27,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34853963838664814 [2023-08-27 06:20:27,565 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2506 transitions. [2023-08-27 06:20:27,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2506 transitions. [2023-08-27 06:20:27,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:27,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2506 transitions. [2023-08-27 06:20:27,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.6) internal successors, (2506), 10 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:27,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:27,570 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:27,570 INFO L175 Difference]: Start difference. First operand has 417 places, 734 transitions, 17231 flow. Second operand 10 states and 2506 transitions. [2023-08-27 06:20:27,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 761 transitions, 18958 flow [2023-08-27 06:20:28,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 761 transitions, 18395 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-27 06:20:28,395 INFO L231 Difference]: Finished difference. Result has 413 places, 730 transitions, 17226 flow [2023-08-27 06:20:28,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16431, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17226, PETRI_PLACES=413, PETRI_TRANSITIONS=730} [2023-08-27 06:20:28,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2023-08-27 06:20:28,396 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 730 transitions, 17226 flow [2023-08-27 06:20:28,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:28,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:28,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:28,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-27 06:20:28,603 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:28,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 574787062, now seen corresponding path program 27 times [2023-08-27 06:20:28,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:28,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836934617] [2023-08-27 06:20:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:28,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:28,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836934617] [2023-08-27 06:20:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836934617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:28,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642739447] [2023-08-27 06:20:28,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:20:28,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:28,968 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:28,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 06:20:29,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:20:29,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:29,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 06:20:29,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:29,361 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 112 treesize of output 80 [2023-08-27 06:20:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:29,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:29,674 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:29,674 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 125 treesize of output 69 [2023-08-27 06:20:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642739447] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:29,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:29,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-27 06:20:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143241233] [2023-08-27 06:20:29,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:29,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:20:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:20:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:20:29,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:29,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 730 transitions, 17226 flow. Second operand has 17 states, 17 states have (on average 247.23529411764707) internal successors, (4203), 17 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:29,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:29,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:29,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:31,439 INFO L124 PetriNetUnfolderBase]: 2081/4459 cut-off events. [2023-08-27 06:20:31,439 INFO L125 PetriNetUnfolderBase]: For 104541/104541 co-relation queries the response was YES. [2023-08-27 06:20:31,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41064 conditions, 4459 events. 2081/4459 cut-off events. For 104541/104541 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36272 event pairs, 842 based on Foata normal form. 24/4483 useless extension candidates. Maximal degree in co-relation 40935. Up to 3967 conditions per place. [2023-08-27 06:20:31,498 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 628 selfloop transitions, 137 changer transitions 0/765 dead transitions. [2023-08-27 06:20:31,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 765 transitions, 19219 flow [2023-08-27 06:20:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:20:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:20:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2504 transitions. [2023-08-27 06:20:31,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482614742698192 [2023-08-27 06:20:31,500 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2504 transitions. [2023-08-27 06:20:31,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2504 transitions. [2023-08-27 06:20:31,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:31,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2504 transitions. [2023-08-27 06:20:31,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:31,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:31,504 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:31,505 INFO L175 Difference]: Start difference. First operand has 413 places, 730 transitions, 17226 flow. Second operand 10 states and 2504 transitions. [2023-08-27 06:20:31,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 765 transitions, 19219 flow [2023-08-27 06:20:32,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 765 transitions, 18850 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-27 06:20:32,364 INFO L231 Difference]: Finished difference. Result has 417 places, 734 transitions, 17302 flow [2023-08-27 06:20:32,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16857, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17302, PETRI_PLACES=417, PETRI_TRANSITIONS=734} [2023-08-27 06:20:32,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-27 06:20:32,365 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 734 transitions, 17302 flow [2023-08-27 06:20:32,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.23529411764707) internal successors, (4203), 17 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:32,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:32,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:32,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:32,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:32,566 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:32,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1563131268, now seen corresponding path program 28 times [2023-08-27 06:20:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:32,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38553975] [2023-08-27 06:20:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:20:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38553975] [2023-08-27 06:20:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38553975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133816270] [2023-08-27 06:20:33,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:20:33,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:33,193 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:33,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 06:20:33,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:20:33,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:33,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:33,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:33,625 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 84 treesize of output 52 [2023-08-27 06:20:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:33,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:34,022 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:34,023 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 44 treesize of output 28 [2023-08-27 06:20:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133816270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:34,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 22 [2023-08-27 06:20:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297950514] [2023-08-27 06:20:34,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:34,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 06:20:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 06:20:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-08-27 06:20:34,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-27 06:20:34,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 734 transitions, 17302 flow. Second operand has 22 states, 22 states have (on average 233.95454545454547) internal successors, (5147), 22 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:34,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:34,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-27 06:20:34,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:36,108 INFO L124 PetriNetUnfolderBase]: 2107/4493 cut-off events. [2023-08-27 06:20:36,108 INFO L125 PetriNetUnfolderBase]: For 103074/103074 co-relation queries the response was YES. [2023-08-27 06:20:36,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41400 conditions, 4493 events. 2107/4493 cut-off events. For 103074/103074 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36526 event pairs, 58 based on Foata normal form. 8/4501 useless extension candidates. Maximal degree in co-relation 41269. Up to 1267 conditions per place. [2023-08-27 06:20:36,165 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 437 selfloop transitions, 393 changer transitions 4/834 dead transitions. [2023-08-27 06:20:36,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 834 transitions, 20745 flow [2023-08-27 06:20:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:20:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:20:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4019 transitions. [2023-08-27 06:20:36,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32880634868690173 [2023-08-27 06:20:36,168 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4019 transitions. [2023-08-27 06:20:36,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4019 transitions. [2023-08-27 06:20:36,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:36,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4019 transitions. [2023-08-27 06:20:36,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 236.41176470588235) internal successors, (4019), 17 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:36,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:36,176 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:36,176 INFO L175 Difference]: Start difference. First operand has 417 places, 734 transitions, 17302 flow. Second operand 17 states and 4019 transitions. [2023-08-27 06:20:36,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 834 transitions, 20745 flow [2023-08-27 06:20:37,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 834 transitions, 20197 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-08-27 06:20:37,055 INFO L231 Difference]: Finished difference. Result has 424 places, 750 transitions, 18067 flow [2023-08-27 06:20:37,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16603, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18067, PETRI_PLACES=424, PETRI_TRANSITIONS=750} [2023-08-27 06:20:37,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2023-08-27 06:20:37,056 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 750 transitions, 18067 flow [2023-08-27 06:20:37,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 233.95454545454547) internal successors, (5147), 22 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:37,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:37,056 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:37,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:37,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-27 06:20:37,263 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:37,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1813923978, now seen corresponding path program 29 times [2023-08-27 06:20:37,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:37,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375552744] [2023-08-27 06:20:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:37,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375552744] [2023-08-27 06:20:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375552744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481990610] [2023-08-27 06:20:37,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:20:37,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:37,686 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:37,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 06:20:37,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:20:37,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:37,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:20:37,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:38,059 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 91 treesize of output 59 [2023-08-27 06:20:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:38,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:38,426 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:38,426 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 117 treesize of output 61 [2023-08-27 06:20:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:38,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481990610] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:38,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:38,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-27 06:20:38,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608897130] [2023-08-27 06:20:38,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:38,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:20:38,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:20:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:20:38,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:20:38,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 750 transitions, 18067 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:38,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:38,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:20:38,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:40,122 INFO L124 PetriNetUnfolderBase]: 2061/4375 cut-off events. [2023-08-27 06:20:40,122 INFO L125 PetriNetUnfolderBase]: For 108048/108048 co-relation queries the response was YES. [2023-08-27 06:20:40,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40957 conditions, 4375 events. 2061/4375 cut-off events. For 108048/108048 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 35216 event pairs, 472 based on Foata normal form. 20/4395 useless extension candidates. Maximal degree in co-relation 40824. Up to 2874 conditions per place. [2023-08-27 06:20:40,177 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 469 selfloop transitions, 284 changer transitions 0/753 dead transitions. [2023-08-27 06:20:40,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 753 transitions, 19277 flow [2023-08-27 06:20:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:20:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:20:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2502 transitions. [2023-08-27 06:20:40,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3479833101529903 [2023-08-27 06:20:40,180 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2502 transitions. [2023-08-27 06:20:40,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2502 transitions. [2023-08-27 06:20:40,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:40,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2502 transitions. [2023-08-27 06:20:40,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.2) internal successors, (2502), 10 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:40,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:40,184 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:40,184 INFO L175 Difference]: Start difference. First operand has 424 places, 750 transitions, 18067 flow. Second operand 10 states and 2502 transitions. [2023-08-27 06:20:40,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 753 transitions, 19277 flow [2023-08-27 06:20:41,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 753 transitions, 18501 flow, removed 18 selfloop flow, removed 16 redundant places. [2023-08-27 06:20:41,049 INFO L231 Difference]: Finished difference. Result has 414 places, 732 transitions, 17450 flow [2023-08-27 06:20:41,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16795, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17450, PETRI_PLACES=414, PETRI_TRANSITIONS=732} [2023-08-27 06:20:41,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2023-08-27 06:20:41,050 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 732 transitions, 17450 flow [2023-08-27 06:20:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:41,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:41,051 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:41,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:41,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:41,251 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:41,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 110698622, now seen corresponding path program 30 times [2023-08-27 06:20:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215132084] [2023-08-27 06:20:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:41,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215132084] [2023-08-27 06:20:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215132084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653486258] [2023-08-27 06:20:41,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:20:41,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:41,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:41,697 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:41,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 06:20:41,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:20:41,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:41,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 06:20:41,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:42,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:20:42,104 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 23 treesize of output 23 [2023-08-27 06:20:42,162 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 84 treesize of output 52 [2023-08-27 06:20:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:42,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:42,435 WARN L839 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1706 (Array Int Int))) (not (= c_~name_1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1706) c_~nondet_0~0.base) c_~nondet_0~0.offset)))) (forall ((v_ArrVal_1706 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1706) c_~nondet_0~0.base) c_~nondet_0~0.offset) c_~name_2~0)))) (= c_~name_1~0 c_~name_2~0) (not (= 0 c_~break_6~0))) is different from false [2023-08-27 06:20:42,448 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:42,448 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 70 treesize of output 54 [2023-08-27 06:20:42,451 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 39 treesize of output 37 [2023-08-27 06:20:42,453 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 37 treesize of output 35 [2023-08-27 06:20:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2023-08-27 06:20:42,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653486258] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:42,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:42,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 06:20:42,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532089708] [2023-08-27 06:20:42,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 06:20:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 06:20:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=381, Unknown=7, NotChecked=40, Total=506 [2023-08-27 06:20:42,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-27 06:20:42,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 732 transitions, 17450 flow. Second operand has 23 states, 23 states have (on average 242.69565217391303) internal successors, (5582), 23 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:42,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:42,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-27 06:20:42,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:44,679 INFO L124 PetriNetUnfolderBase]: 2097/4415 cut-off events. [2023-08-27 06:20:44,679 INFO L125 PetriNetUnfolderBase]: For 106917/106917 co-relation queries the response was YES. [2023-08-27 06:20:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41381 conditions, 4415 events. 2097/4415 cut-off events. For 106917/106917 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 35360 event pairs, 135 based on Foata normal form. 64/4479 useless extension candidates. Maximal degree in co-relation 41251. Up to 1532 conditions per place. [2023-08-27 06:20:44,728 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 411 selfloop transitions, 406 changer transitions 3/820 dead transitions. [2023-08-27 06:20:44,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 820 transitions, 20615 flow [2023-08-27 06:20:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:20:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:20:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3208 transitions. [2023-08-27 06:20:44,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34321172568738634 [2023-08-27 06:20:44,731 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3208 transitions. [2023-08-27 06:20:44,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3208 transitions. [2023-08-27 06:20:44,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:44,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3208 transitions. [2023-08-27 06:20:44,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 246.76923076923077) internal successors, (3208), 13 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:44,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:44,737 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:44,738 INFO L175 Difference]: Start difference. First operand has 414 places, 732 transitions, 17450 flow. Second operand 13 states and 3208 transitions. [2023-08-27 06:20:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 820 transitions, 20615 flow [2023-08-27 06:20:45,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 820 transitions, 20245 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-27 06:20:45,505 INFO L231 Difference]: Finished difference. Result has 419 places, 753 transitions, 18643 flow [2023-08-27 06:20:45,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=17108, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18643, PETRI_PLACES=419, PETRI_TRANSITIONS=753} [2023-08-27 06:20:45,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2023-08-27 06:20:45,506 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 753 transitions, 18643 flow [2023-08-27 06:20:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 242.69565217391303) internal successors, (5582), 23 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:45,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:45,506 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:45,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:45,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-27 06:20:45,707 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:45,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 566977574, now seen corresponding path program 31 times [2023-08-27 06:20:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:45,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91337119] [2023-08-27 06:20:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:20:46,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91337119] [2023-08-27 06:20:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91337119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839489135] [2023-08-27 06:20:46,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:20:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:46,405 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:46,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 06:20:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:46,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:20:46,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:46,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:20:46,838 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 25 treesize of output 25 [2023-08-27 06:20:46,920 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 72 treesize of output 48 [2023-08-27 06:20:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:46,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:47,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:47,319 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 145 treesize of output 97 [2023-08-27 06:20:47,323 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 19 treesize of output 15 [2023-08-27 06:20:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:47,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839489135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:47,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:47,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2023-08-27 06:20:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180167802] [2023-08-27 06:20:47,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:47,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 06:20:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 06:20:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=756, Unknown=2, NotChecked=0, Total=870 [2023-08-27 06:20:47,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:20:47,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 753 transitions, 18643 flow. Second operand has 30 states, 30 states have (on average 218.76666666666668) internal successors, (6563), 30 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:47,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:47,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:20:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:49,441 INFO L124 PetriNetUnfolderBase]: 2064/4353 cut-off events. [2023-08-27 06:20:49,441 INFO L125 PetriNetUnfolderBase]: For 110176/110176 co-relation queries the response was YES. [2023-08-27 06:20:49,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41836 conditions, 4353 events. 2064/4353 cut-off events. For 110176/110176 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 34796 event pairs, 732 based on Foata normal form. 16/4369 useless extension candidates. Maximal degree in co-relation 41705. Up to 3221 conditions per place. [2023-08-27 06:20:49,502 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 554 selfloop transitions, 201 changer transitions 18/773 dead transitions. [2023-08-27 06:20:49,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 773 transitions, 20303 flow [2023-08-27 06:20:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:20:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:20:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2440 transitions. [2023-08-27 06:20:49,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30850929321026677 [2023-08-27 06:20:49,504 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2440 transitions. [2023-08-27 06:20:49,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2440 transitions. [2023-08-27 06:20:49,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:49,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2440 transitions. [2023-08-27 06:20:49,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.8181818181818) internal successors, (2440), 11 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:49,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:49,509 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:49,509 INFO L175 Difference]: Start difference. First operand has 419 places, 753 transitions, 18643 flow. Second operand 11 states and 2440 transitions. [2023-08-27 06:20:49,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 773 transitions, 20303 flow [2023-08-27 06:20:50,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 773 transitions, 19985 flow, removed 58 selfloop flow, removed 8 redundant places. [2023-08-27 06:20:50,368 INFO L231 Difference]: Finished difference. Result has 421 places, 738 transitions, 18330 flow [2023-08-27 06:20:50,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=18253, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18330, PETRI_PLACES=421, PETRI_TRANSITIONS=738} [2023-08-27 06:20:50,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2023-08-27 06:20:50,368 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 738 transitions, 18330 flow [2023-08-27 06:20:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 218.76666666666668) internal successors, (6563), 30 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:50,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:50,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:50,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-27 06:20:50,570 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:50,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash -883222964, now seen corresponding path program 32 times [2023-08-27 06:20:50,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:50,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914746636] [2023-08-27 06:20:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:20:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914746636] [2023-08-27 06:20:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914746636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550678903] [2023-08-27 06:20:51,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:20:51,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:51,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:51,229 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:51,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 06:20:51,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:20:51,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:51,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 06:20:51,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:51,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:20:51,644 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 63 treesize of output 59 [2023-08-27 06:20:51,843 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 17 treesize of output 9 [2023-08-27 06:20:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:51,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:52,180 WARN L839 $PredicateComparison]: unable to prove that (or (= c_~name_1~0 c_~name_2~0) (and (forall ((v_ArrVal_1784 (Array Int Int))) (not (= c_~name_1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~nondet_0~0.base) c_~nondet_0~0.offset)))) (forall ((v_ArrVal_1784 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~nondet_0~0.base) c_~nondet_0~0.offset) c_~name_2~0)))) (not (= 0 c_~break_6~0))) is different from false [2023-08-27 06:20:52,192 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:52,193 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 70 treesize of output 54 [2023-08-27 06:20:52,195 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 39 treesize of output 37 [2023-08-27 06:20:52,198 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 37 treesize of output 35 [2023-08-27 06:20:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550678903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:52,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:52,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-08-27 06:20:52,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250093992] [2023-08-27 06:20:52,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:52,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:20:52,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:52,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:20:52,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=644, Unknown=1, NotChecked=52, Total=812 [2023-08-27 06:20:52,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-27 06:20:52,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 738 transitions, 18330 flow. Second operand has 29 states, 29 states have (on average 233.79310344827587) internal successors, (6780), 29 states have internal predecessors, (6780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:52,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:52,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-27 06:20:52,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:54,742 INFO L124 PetriNetUnfolderBase]: 2122/4412 cut-off events. [2023-08-27 06:20:54,742 INFO L125 PetriNetUnfolderBase]: For 116580/116580 co-relation queries the response was YES. [2023-08-27 06:20:54,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 4412 events. 2122/4412 cut-off events. For 116580/116580 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 34918 event pairs, 189 based on Foata normal form. 32/4444 useless extension candidates. Maximal degree in co-relation 42605. Up to 1706 conditions per place. [2023-08-27 06:20:54,797 INFO L140 encePairwiseOnDemand]: 707/719 looper letters, 407 selfloop transitions, 463 changer transitions 2/872 dead transitions. [2023-08-27 06:20:54,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 872 transitions, 22703 flow [2023-08-27 06:20:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:20:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:20:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4033 transitions. [2023-08-27 06:20:54,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32995173034443265 [2023-08-27 06:20:54,800 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4033 transitions. [2023-08-27 06:20:54,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4033 transitions. [2023-08-27 06:20:54,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:54,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4033 transitions. [2023-08-27 06:20:54,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 237.23529411764707) internal successors, (4033), 17 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:54,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:54,808 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:54,808 INFO L175 Difference]: Start difference. First operand has 421 places, 738 transitions, 18330 flow. Second operand 17 states and 4033 transitions. [2023-08-27 06:20:54,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 872 transitions, 22703 flow [2023-08-27 06:20:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 872 transitions, 22453 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-27 06:20:55,719 INFO L231 Difference]: Finished difference. Result has 428 places, 808 transitions, 21054 flow [2023-08-27 06:20:55,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=17967, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21054, PETRI_PLACES=428, PETRI_TRANSITIONS=808} [2023-08-27 06:20:55,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2023-08-27 06:20:55,720 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 808 transitions, 21054 flow [2023-08-27 06:20:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 233.79310344827587) internal successors, (6780), 29 states have internal predecessors, (6780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:55,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:20:55,721 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:20:55,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 06:20:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-27 06:20:55,921 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:20:55,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:20:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1916989782, now seen corresponding path program 33 times [2023-08-27 06:20:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:20:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425931175] [2023-08-27 06:20:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:20:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:20:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:20:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:20:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425931175] [2023-08-27 06:20:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425931175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:20:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135167389] [2023-08-27 06:20:56,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:20:56,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:20:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:20:56,481 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:20:56,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 06:20:56,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:20:56,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:20:56,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 06:20:56,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:20:56,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:20:56,890 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 65 treesize of output 61 [2023-08-27 06:20:57,148 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 82 treesize of output 50 [2023-08-27 06:20:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:57,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:20:57,655 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:20:57,655 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 115 treesize of output 83 [2023-08-27 06:20:57,658 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 19 treesize of output 15 [2023-08-27 06:20:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:20:57,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135167389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:20:57,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:20:57,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 06:20:57,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643903066] [2023-08-27 06:20:57,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:20:57,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:20:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:20:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:20:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=538, Unknown=2, NotChecked=0, Total=650 [2023-08-27 06:20:57,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-27 06:20:57,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 808 transitions, 21054 flow. Second operand has 26 states, 26 states have (on average 242.84615384615384) internal successors, (6314), 26 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:57,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:20:57,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-27 06:20:57,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:20:59,785 INFO L124 PetriNetUnfolderBase]: 2078/4334 cut-off events. [2023-08-27 06:20:59,786 INFO L125 PetriNetUnfolderBase]: For 126363/126363 co-relation queries the response was YES. [2023-08-27 06:20:59,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44153 conditions, 4334 events. 2078/4334 cut-off events. For 126363/126363 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 34273 event pairs, 470 based on Foata normal form. 20/4354 useless extension candidates. Maximal degree in co-relation 44023. Up to 2248 conditions per place. [2023-08-27 06:20:59,842 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 522 selfloop transitions, 321 changer transitions 8/851 dead transitions. [2023-08-27 06:20:59,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 851 transitions, 23167 flow [2023-08-27 06:20:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:20:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:20:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3451 transitions. [2023-08-27 06:20:59,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3428372739916551 [2023-08-27 06:20:59,845 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3451 transitions. [2023-08-27 06:20:59,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3451 transitions. [2023-08-27 06:20:59,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:20:59,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3451 transitions. [2023-08-27 06:20:59,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 246.5) internal successors, (3451), 14 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:59,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:59,852 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:20:59,852 INFO L175 Difference]: Start difference. First operand has 428 places, 808 transitions, 21054 flow. Second operand 14 states and 3451 transitions. [2023-08-27 06:20:59,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 851 transitions, 23167 flow [2023-08-27 06:21:00,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 851 transitions, 22430 flow, removed 64 selfloop flow, removed 12 redundant places. [2023-08-27 06:21:00,869 INFO L231 Difference]: Finished difference. Result has 431 places, 804 transitions, 21001 flow [2023-08-27 06:21:00,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=20281, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21001, PETRI_PLACES=431, PETRI_TRANSITIONS=804} [2023-08-27 06:21:00,870 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2023-08-27 06:21:00,870 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 804 transitions, 21001 flow [2023-08-27 06:21:00,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 242.84615384615384) internal successors, (6314), 26 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:00,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:21:00,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:21:00,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-27 06:21:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-27 06:21:01,072 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:21:01,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:21:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -719246700, now seen corresponding path program 34 times [2023-08-27 06:21:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:21:01,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989867920] [2023-08-27 06:21:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:21:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:21:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:21:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989867920] [2023-08-27 06:21:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989867920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:21:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170394526] [2023-08-27 06:21:01,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:21:01,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:01,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:21:01,554 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:21:01,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 06:21:01,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:21:01,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:21:01,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:21:01,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:21:01,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:21:01,944 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 65 treesize of output 61 [2023-08-27 06:21:02,101 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 112 treesize of output 80 [2023-08-27 06:21:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:02,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:21:02,478 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:02,478 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 74 treesize of output 58 [2023-08-27 06:21:02,481 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 43 treesize of output 41 [2023-08-27 06:21:02,483 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 41 treesize of output 39 [2023-08-27 06:21:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170394526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:21:02,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:21:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 06:21:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602563766] [2023-08-27 06:21:02,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:21:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:21:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:21:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:21:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=517, Unknown=3, NotChecked=0, Total=600 [2023-08-27 06:21:02,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-27 06:21:02,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 804 transitions, 21001 flow. Second operand has 25 states, 25 states have (on average 242.68) internal successors, (6067), 25 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:02,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:21:02,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-27 06:21:02,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:21:05,894 INFO L124 PetriNetUnfolderBase]: 2090/4301 cut-off events. [2023-08-27 06:21:05,895 INFO L125 PetriNetUnfolderBase]: For 124590/124590 co-relation queries the response was YES. [2023-08-27 06:21:05,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44530 conditions, 4301 events. 2090/4301 cut-off events. For 124590/124590 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 33634 event pairs, 76 based on Foata normal form. 16/4317 useless extension candidates. Maximal degree in co-relation 44400. Up to 1148 conditions per place. [2023-08-27 06:21:05,949 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 339 selfloop transitions, 560 changer transitions 0/899 dead transitions. [2023-08-27 06:21:05,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 899 transitions, 24097 flow [2023-08-27 06:21:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:21:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:21:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5668 transitions. [2023-08-27 06:21:05,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3427465683013848 [2023-08-27 06:21:05,953 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5668 transitions. [2023-08-27 06:21:05,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5668 transitions. [2023-08-27 06:21:05,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:21:05,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5668 transitions. [2023-08-27 06:21:05,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 246.43478260869566) internal successors, (5668), 23 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:05,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:05,963 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:05,963 INFO L175 Difference]: Start difference. First operand has 431 places, 804 transitions, 21001 flow. Second operand 23 states and 5668 transitions. [2023-08-27 06:21:05,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 899 transitions, 24097 flow [2023-08-27 06:21:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 899 transitions, 23533 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-08-27 06:21:06,894 INFO L231 Difference]: Finished difference. Result has 443 places, 833 transitions, 22950 flow [2023-08-27 06:21:06,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=20178, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22950, PETRI_PLACES=443, PETRI_TRANSITIONS=833} [2023-08-27 06:21:06,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2023-08-27 06:21:06,895 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 833 transitions, 22950 flow [2023-08-27 06:21:06,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 242.68) internal successors, (6067), 25 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:06,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:21:06,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:21:06,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-27 06:21:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:07,096 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:21:07,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:21:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1658916358, now seen corresponding path program 35 times [2023-08-27 06:21:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:21:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500925999] [2023-08-27 06:21:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:21:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:21:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:07,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:21:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500925999] [2023-08-27 06:21:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500925999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:21:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625166782] [2023-08-27 06:21:07,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:21:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:21:07,526 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:21:07,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 06:21:07,778 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:21:07,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:21:07,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 06:21:07,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:21:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:21:07,888 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 52 treesize of output 48 [2023-08-27 06:21:08,021 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 91 treesize of output 59 [2023-08-27 06:21:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:08,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:21:08,645 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:08,646 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 137 treesize of output 89 [2023-08-27 06:21:08,727 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 19 treesize of output 15 [2023-08-27 06:21:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:08,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625166782] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:21:08,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:21:08,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 06:21:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103467583] [2023-08-27 06:21:08,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:21:08,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:21:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:21:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:21:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=559, Unknown=2, NotChecked=0, Total=650 [2023-08-27 06:21:08,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-27 06:21:08,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 833 transitions, 22950 flow. Second operand has 26 states, 26 states have (on average 242.69230769230768) internal successors, (6310), 26 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:08,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:21:08,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-27 06:21:08,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:21:11,768 INFO L124 PetriNetUnfolderBase]: 2072/4253 cut-off events. [2023-08-27 06:21:11,769 INFO L125 PetriNetUnfolderBase]: For 138244/138244 co-relation queries the response was YES. [2023-08-27 06:21:11,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45917 conditions, 4253 events. 2072/4253 cut-off events. For 138244/138244 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 32978 event pairs, 296 based on Foata normal form. 12/4265 useless extension candidates. Maximal degree in co-relation 45785. Up to 1550 conditions per place. [2023-08-27 06:21:11,829 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 448 selfloop transitions, 423 changer transitions 5/876 dead transitions. [2023-08-27 06:21:11,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 876 transitions, 24885 flow [2023-08-27 06:21:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:21:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:21:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5644 transitions. [2023-08-27 06:21:11,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34129527725705994 [2023-08-27 06:21:11,833 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5644 transitions. [2023-08-27 06:21:11,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5644 transitions. [2023-08-27 06:21:11,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:21:11,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5644 transitions. [2023-08-27 06:21:11,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 245.3913043478261) internal successors, (5644), 23 states have internal predecessors, (5644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:11,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:11,844 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:11,844 INFO L175 Difference]: Start difference. First operand has 443 places, 833 transitions, 22950 flow. Second operand 23 states and 5644 transitions. [2023-08-27 06:21:11,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 876 transitions, 24885 flow [2023-08-27 06:21:13,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 876 transitions, 24021 flow, removed 89 selfloop flow, removed 16 redundant places. [2023-08-27 06:21:13,075 INFO L231 Difference]: Finished difference. Result has 447 places, 826 transitions, 22715 flow [2023-08-27 06:21:13,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=21926, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22715, PETRI_PLACES=447, PETRI_TRANSITIONS=826} [2023-08-27 06:21:13,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2023-08-27 06:21:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 826 transitions, 22715 flow [2023-08-27 06:21:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 242.69230769230768) internal successors, (6310), 26 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:13,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:21:13,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:21:13,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-27 06:21:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:13,286 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:21:13,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:21:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 904731363, now seen corresponding path program 36 times [2023-08-27 06:21:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:21:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509363138] [2023-08-27 06:21:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:21:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:21:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:14,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:21:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509363138] [2023-08-27 06:21:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509363138] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:21:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402594221] [2023-08-27 06:21:14,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:21:14,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:14,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:21:14,264 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:21:14,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 06:21:14,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:21:14,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:21:14,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 06:21:14,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:21:15,161 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:15,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 127 [2023-08-27 06:21:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:15,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:21:21,302 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:21,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 554 treesize of output 389 [2023-08-27 06:21:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402594221] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:21:21,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:21:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-27 06:21:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699411229] [2023-08-27 06:21:21,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:21:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 06:21:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:21:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 06:21:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-08-27 06:21:21,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:21:21,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 826 transitions, 22715 flow. Second operand has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:21,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:21:21,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:21:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:21:47,203 INFO L124 PetriNetUnfolderBase]: 3778/7777 cut-off events. [2023-08-27 06:21:47,204 INFO L125 PetriNetUnfolderBase]: For 242885/242885 co-relation queries the response was YES. [2023-08-27 06:21:47,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80542 conditions, 7777 events. 3778/7777 cut-off events. For 242885/242885 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 67298 event pairs, 462 based on Foata normal form. 34/7811 useless extension candidates. Maximal degree in co-relation 80412. Up to 1594 conditions per place. [2023-08-27 06:21:47,298 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 919 selfloop transitions, 683 changer transitions 54/1656 dead transitions. [2023-08-27 06:21:47,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1656 transitions, 43750 flow [2023-08-27 06:21:47,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-27 06:21:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-27 06:21:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 15111 transitions. [2023-08-27 06:21:47,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3335982515398371 [2023-08-27 06:21:47,307 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 15111 transitions. [2023-08-27 06:21:47,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 15111 transitions. [2023-08-27 06:21:47,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:21:47,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 15111 transitions. [2023-08-27 06:21:47,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 239.85714285714286) internal successors, (15111), 63 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:47,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 719.0) internal successors, (46016), 64 states have internal predecessors, (46016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:47,338 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 719.0) internal successors, (46016), 64 states have internal predecessors, (46016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:47,338 INFO L175 Difference]: Start difference. First operand has 447 places, 826 transitions, 22715 flow. Second operand 63 states and 15111 transitions. [2023-08-27 06:21:47,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1656 transitions, 43750 flow [2023-08-27 06:21:49,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1656 transitions, 42684 flow, removed 33 selfloop flow, removed 16 redundant places. [2023-08-27 06:21:49,278 INFO L231 Difference]: Finished difference. Result has 528 places, 1165 transitions, 31680 flow [2023-08-27 06:21:49,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=21709, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=31680, PETRI_PLACES=528, PETRI_TRANSITIONS=1165} [2023-08-27 06:21:49,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2023-08-27 06:21:49,279 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1165 transitions, 31680 flow [2023-08-27 06:21:49,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:49,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:21:49,280 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:21:49,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-27 06:21:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-08-27 06:21:49,480 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:21:49,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:21:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1477920765, now seen corresponding path program 37 times [2023-08-27 06:21:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:21:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104875294] [2023-08-27 06:21:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:21:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:21:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:50,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:21:50,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104875294] [2023-08-27 06:21:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104875294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:21:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039366195] [2023-08-27 06:21:50,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:21:50,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:21:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:21:50,680 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:21:50,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 06:21:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:21:50,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-27 06:21:50,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:21:51,317 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:21:51,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 139 [2023-08-27 06:21:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:51,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:21:54,051 INFO L322 Elim1Store]: treesize reduction 13, result has 62.9 percent of original size [2023-08-27 06:21:54,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 85 [2023-08-27 06:21:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:21:54,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039366195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:21:54,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:21:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-27 06:21:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733039004] [2023-08-27 06:21:54,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:21:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:21:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:21:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:21:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-08-27 06:21:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:21:54,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1165 transitions, 31680 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:21:54,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:21:54,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:21:54,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:22:09,328 INFO L124 PetriNetUnfolderBase]: 3968/8157 cut-off events. [2023-08-27 06:22:09,328 INFO L125 PetriNetUnfolderBase]: For 301256/301256 co-relation queries the response was YES. [2023-08-27 06:22:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91076 conditions, 8157 events. 3968/8157 cut-off events. For 301256/301256 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 70989 event pairs, 648 based on Foata normal form. 80/8237 useless extension candidates. Maximal degree in co-relation 90908. Up to 3355 conditions per place. [2023-08-27 06:22:09,459 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 638 selfloop transitions, 722 changer transitions 73/1433 dead transitions. [2023-08-27 06:22:09,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1433 transitions, 40095 flow [2023-08-27 06:22:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-27 06:22:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-27 06:22:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13824 transitions. [2023-08-27 06:22:09,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3314948923313031 [2023-08-27 06:22:09,467 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13824 transitions. [2023-08-27 06:22:09,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13824 transitions. [2023-08-27 06:22:09,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:22:09,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13824 transitions. [2023-08-27 06:22:09,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.3448275862069) internal successors, (13824), 58 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:09,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 719.0) internal successors, (42421), 59 states have internal predecessors, (42421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:09,499 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 719.0) internal successors, (42421), 59 states have internal predecessors, (42421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:09,499 INFO L175 Difference]: Start difference. First operand has 528 places, 1165 transitions, 31680 flow. Second operand 58 states and 13824 transitions. [2023-08-27 06:22:09,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1433 transitions, 40095 flow [2023-08-27 06:22:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 1433 transitions, 37911 flow, removed 547 selfloop flow, removed 19 redundant places. [2023-08-27 06:22:12,746 INFO L231 Difference]: Finished difference. Result has 564 places, 1276 transitions, 34611 flow [2023-08-27 06:22:12,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=29349, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=601, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=34611, PETRI_PLACES=564, PETRI_TRANSITIONS=1276} [2023-08-27 06:22:12,749 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2023-08-27 06:22:12,749 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 1276 transitions, 34611 flow [2023-08-27 06:22:12,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:12,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:22:12,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:22:12,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-27 06:22:12,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:22:12,958 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:22:12,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:22:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash 678628635, now seen corresponding path program 38 times [2023-08-27 06:22:12,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:22:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146081075] [2023-08-27 06:22:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:22:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:22:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:22:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:22:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146081075] [2023-08-27 06:22:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146081075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:22:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784728979] [2023-08-27 06:22:13,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:22:13,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:22:13,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:22:13,917 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:22:13,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-27 06:22:14,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:22:14,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:22:14,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-27 06:22:14,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:22:14,764 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:22:14,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 119 [2023-08-27 06:22:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:15,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:22:18,268 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:22:18,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 269 treesize of output 197 [2023-08-27 06:22:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:18,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784728979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:22:18,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:22:18,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-27 06:22:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282887708] [2023-08-27 06:22:18,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:22:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:22:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:22:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:22:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-08-27 06:22:18,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:22:18,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 1276 transitions, 34611 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:18,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:22:18,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:22:18,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:22:48,585 INFO L124 PetriNetUnfolderBase]: 4668/9685 cut-off events. [2023-08-27 06:22:48,585 INFO L125 PetriNetUnfolderBase]: For 360311/360311 co-relation queries the response was YES. [2023-08-27 06:22:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104437 conditions, 9685 events. 4668/9685 cut-off events. For 360311/360311 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 87774 event pairs, 524 based on Foata normal form. 80/9765 useless extension candidates. Maximal degree in co-relation 104274. Up to 2911 conditions per place. [2023-08-27 06:22:48,750 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 685 selfloop transitions, 1000 changer transitions 82/1767 dead transitions. [2023-08-27 06:22:48,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1767 transitions, 48418 flow [2023-08-27 06:22:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-27 06:22:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-27 06:22:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 17415 transitions. [2023-08-27 06:22:48,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33179644483395887 [2023-08-27 06:22:48,760 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 17415 transitions. [2023-08-27 06:22:48,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 17415 transitions. [2023-08-27 06:22:48,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:22:48,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 17415 transitions. [2023-08-27 06:22:48,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 238.56164383561645) internal successors, (17415), 73 states have internal predecessors, (17415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:48,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 719.0) internal successors, (53206), 74 states have internal predecessors, (53206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:48,803 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 719.0) internal successors, (53206), 74 states have internal predecessors, (53206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:48,803 INFO L175 Difference]: Start difference. First operand has 564 places, 1276 transitions, 34611 flow. Second operand 73 states and 17415 transitions. [2023-08-27 06:22:48,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1767 transitions, 48418 flow [2023-08-27 06:22:53,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 1767 transitions, 45446 flow, removed 1037 selfloop flow, removed 26 redundant places. [2023-08-27 06:22:53,064 INFO L231 Difference]: Finished difference. Result has 612 places, 1521 transitions, 41476 flow [2023-08-27 06:22:53,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=32426, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=773, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=41476, PETRI_PLACES=612, PETRI_TRANSITIONS=1521} [2023-08-27 06:22:53,065 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 571 predicate places. [2023-08-27 06:22:53,065 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 1521 transitions, 41476 flow [2023-08-27 06:22:53,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:22:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:22:53,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-27 06:22:53,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-08-27 06:22:53,267 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:22:53,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:22:53,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1472793677, now seen corresponding path program 39 times [2023-08-27 06:22:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:22:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143734946] [2023-08-27 06:22:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:22:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:22:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:22:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:22:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143734946] [2023-08-27 06:22:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143734946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:22:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853312470] [2023-08-27 06:22:54,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:22:54,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:22:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:22:54,406 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:22:54,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-27 06:22:54,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:22:54,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:22:54,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-27 06:22:54,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:22:55,042 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 194 treesize of output 126 [2023-08-27 06:22:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:55,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:22:57,521 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:22:57,521 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 336 treesize of output 246 [2023-08-27 06:22:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:22:57,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853312470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:22:57,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:22:57,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 28 [2023-08-27 06:22:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246839561] [2023-08-27 06:22:57,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:22:57,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:22:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:22:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:22:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2023-08-27 06:22:57,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:22:57,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1521 transitions, 41476 flow. Second operand has 29 states, 29 states have (on average 235.89655172413794) internal successors, (6841), 29 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:22:57,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:22:57,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:22:57,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:23:15,243 INFO L124 PetriNetUnfolderBase]: 6238/12977 cut-off events. [2023-08-27 06:23:15,243 INFO L125 PetriNetUnfolderBase]: For 465142/465142 co-relation queries the response was YES. [2023-08-27 06:23:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141229 conditions, 12977 events. 6238/12977 cut-off events. For 465142/465142 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 122985 event pairs, 543 based on Foata normal form. 74/13051 useless extension candidates. Maximal degree in co-relation 141065. Up to 4580 conditions per place. [2023-08-27 06:23:15,458 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1226 selfloop transitions, 980 changer transitions 81/2287 dead transitions. [2023-08-27 06:23:15,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 2287 transitions, 65660 flow [2023-08-27 06:23:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-27 06:23:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-27 06:23:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 12472 transitions. [2023-08-27 06:23:15,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3335829677971542 [2023-08-27 06:23:15,563 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 12472 transitions. [2023-08-27 06:23:15,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 12472 transitions. [2023-08-27 06:23:15,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:23:15,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 12472 transitions. [2023-08-27 06:23:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 239.84615384615384) internal successors, (12472), 52 states have internal predecessors, (12472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:15,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 719.0) internal successors, (38107), 53 states have internal predecessors, (38107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:15,599 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 719.0) internal successors, (38107), 53 states have internal predecessors, (38107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:15,600 INFO L175 Difference]: Start difference. First operand has 612 places, 1521 transitions, 41476 flow. Second operand 52 states and 12472 transitions. [2023-08-27 06:23:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 2287 transitions, 65660 flow [2023-08-27 06:23:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 2287 transitions, 63149 flow, removed 846 selfloop flow, removed 29 redundant places. [2023-08-27 06:23:21,616 INFO L231 Difference]: Finished difference. Result has 650 places, 1853 transitions, 52193 flow [2023-08-27 06:23:21,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=39425, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=52193, PETRI_PLACES=650, PETRI_TRANSITIONS=1853} [2023-08-27 06:23:21,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 609 predicate places. [2023-08-27 06:23:21,618 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 1853 transitions, 52193 flow [2023-08-27 06:23:21,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 235.89655172413794) internal successors, (6841), 29 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:21,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:23:21,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:23:21,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-27 06:23:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:23:21,819 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:23:21,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:23:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1174723383, now seen corresponding path program 40 times [2023-08-27 06:23:21,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:23:21,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831089381] [2023-08-27 06:23:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:23:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:23:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:23:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:23:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:23:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831089381] [2023-08-27 06:23:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831089381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:23:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643047182] [2023-08-27 06:23:22,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:23:22,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:23:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:23:22,939 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:23:22,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-27 06:23:23,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:23:23,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:23:23,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 06:23:23,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:23:23,528 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 254 treesize of output 140 [2023-08-27 06:23:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:23:23,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:23:25,913 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:23:25,914 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 384 treesize of output 267 [2023-08-27 06:23:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:23:26,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643047182] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:23:26,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:23:26,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-27 06:23:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648768790] [2023-08-27 06:23:26,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:23:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:23:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:23:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:23:26,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2023-08-27 06:23:26,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:23:26,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 1853 transitions, 52193 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:26,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:23:26,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:23:26,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:23:45,788 INFO L124 PetriNetUnfolderBase]: 7406/15247 cut-off events. [2023-08-27 06:23:45,788 INFO L125 PetriNetUnfolderBase]: For 582419/582419 co-relation queries the response was YES. [2023-08-27 06:23:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169736 conditions, 15247 events. 7406/15247 cut-off events. For 582419/582419 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 146222 event pairs, 1498 based on Foata normal form. 50/15297 useless extension candidates. Maximal degree in co-relation 169557. Up to 7357 conditions per place. [2023-08-27 06:23:46,033 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1574 selfloop transitions, 892 changer transitions 67/2533 dead transitions. [2023-08-27 06:23:46,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 2533 transitions, 74434 flow [2023-08-27 06:23:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-27 06:23:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-27 06:23:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10773 transitions. [2023-08-27 06:23:46,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33296244784422807 [2023-08-27 06:23:46,040 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10773 transitions. [2023-08-27 06:23:46,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10773 transitions. [2023-08-27 06:23:46,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:23:46,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10773 transitions. [2023-08-27 06:23:46,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 239.4) internal successors, (10773), 45 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:46,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 719.0) internal successors, (33074), 46 states have internal predecessors, (33074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:46,062 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 719.0) internal successors, (33074), 46 states have internal predecessors, (33074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:46,062 INFO L175 Difference]: Start difference. First operand has 650 places, 1853 transitions, 52193 flow. Second operand 45 states and 10773 transitions. [2023-08-27 06:23:46,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 2533 transitions, 74434 flow [2023-08-27 06:23:54,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2533 transitions, 71475 flow, removed 1253 selfloop flow, removed 14 redundant places. [2023-08-27 06:23:54,751 INFO L231 Difference]: Finished difference. Result has 691 places, 2288 transitions, 63850 flow [2023-08-27 06:23:54,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=50047, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=63850, PETRI_PLACES=691, PETRI_TRANSITIONS=2288} [2023-08-27 06:23:54,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 650 predicate places. [2023-08-27 06:23:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 2288 transitions, 63850 flow [2023-08-27 06:23:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:23:54,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:23:54,753 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:23:54,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-27 06:23:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:23:54,954 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:23:54,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:23:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1324501459, now seen corresponding path program 41 times [2023-08-27 06:23:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:23:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029192219] [2023-08-27 06:23:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:23:54,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:23:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:23:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:23:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:23:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029192219] [2023-08-27 06:23:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029192219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:23:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279465851] [2023-08-27 06:23:55,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:23:55,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:23:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:23:55,709 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:23:55,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-27 06:23:56,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:23:56,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:23:56,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-27 06:23:56,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:23:56,589 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:23:56,589 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 166 treesize of output 92 [2023-08-27 06:23:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:23:56,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:23:59,892 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:23:59,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 495 treesize of output 359 [2023-08-27 06:24:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279465851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:24:01,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:24:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-27 06:24:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000219521] [2023-08-27 06:24:01,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:24:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 06:24:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:24:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 06:24:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-08-27 06:24:01,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:24:01,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 2288 transitions, 63850 flow. Second operand has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:01,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:24:01,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:24:01,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:24:19,878 INFO L124 PetriNetUnfolderBase]: 7570/15449 cut-off events. [2023-08-27 06:24:19,878 INFO L125 PetriNetUnfolderBase]: For 586906/586906 co-relation queries the response was YES. [2023-08-27 06:24:20,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172017 conditions, 15449 events. 7570/15449 cut-off events. For 586906/586906 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 147166 event pairs, 1144 based on Foata normal form. 36/15485 useless extension candidates. Maximal degree in co-relation 171823. Up to 5140 conditions per place. [2023-08-27 06:24:20,158 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1383 selfloop transitions, 1084 changer transitions 41/2508 dead transitions. [2023-08-27 06:24:20,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 2508 transitions, 74406 flow [2023-08-27 06:24:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 06:24:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 06:24:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7177 transitions. [2023-08-27 06:24:20,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33273064441353734 [2023-08-27 06:24:20,163 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7177 transitions. [2023-08-27 06:24:20,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7177 transitions. [2023-08-27 06:24:20,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:24:20,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7177 transitions. [2023-08-27 06:24:20,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 239.23333333333332) internal successors, (7177), 30 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:20,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:20,176 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:20,176 INFO L175 Difference]: Start difference. First operand has 691 places, 2288 transitions, 63850 flow. Second operand 30 states and 7177 transitions. [2023-08-27 06:24:20,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 2508 transitions, 74406 flow [2023-08-27 06:24:29,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 2508 transitions, 73054 flow, removed 623 selfloop flow, removed 15 redundant places. [2023-08-27 06:24:29,480 INFO L231 Difference]: Finished difference. Result has 702 places, 2392 transitions, 67790 flow [2023-08-27 06:24:29,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=62518, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=994, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=67790, PETRI_PLACES=702, PETRI_TRANSITIONS=2392} [2023-08-27 06:24:29,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 661 predicate places. [2023-08-27 06:24:29,482 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 2392 transitions, 67790 flow [2023-08-27 06:24:29,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:29,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:24:29,483 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:24:29,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-27 06:24:29,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-08-27 06:24:29,695 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:24:29,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:24:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash 163295917, now seen corresponding path program 42 times [2023-08-27 06:24:29,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:24:29,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126248533] [2023-08-27 06:24:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:24:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:24:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:24:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:24:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126248533] [2023-08-27 06:24:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126248533] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:24:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439057518] [2023-08-27 06:24:30,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:24:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:24:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:24:30,624 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:24:30,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-27 06:24:30,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:24:30,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:24:30,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-27 06:24:30,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:24:31,555 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:24:31,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 124 [2023-08-27 06:24:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:31,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:24:35,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:24:35,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 405 treesize of output 294 [2023-08-27 06:24:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:24:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439057518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:24:36,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:24:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-27 06:24:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892673168] [2023-08-27 06:24:36,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:24:36,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:24:36,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:24:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:24:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-08-27 06:24:36,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:24:36,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 2392 transitions, 67790 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:36,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:24:36,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:24:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:24:54,028 INFO L124 PetriNetUnfolderBase]: 8072/16631 cut-off events. [2023-08-27 06:24:54,029 INFO L125 PetriNetUnfolderBase]: For 656550/656550 co-relation queries the response was YES. [2023-08-27 06:24:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185055 conditions, 16631 events. 8072/16631 cut-off events. For 656550/656550 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 161953 event pairs, 1200 based on Foata normal form. 36/16667 useless extension candidates. Maximal degree in co-relation 184861. Up to 5362 conditions per place. [2023-08-27 06:24:54,348 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1455 selfloop transitions, 1163 changer transitions 48/2666 dead transitions. [2023-08-27 06:24:54,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2666 transitions, 80108 flow [2023-08-27 06:24:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 06:24:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 06:24:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7413 transitions. [2023-08-27 06:24:54,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.332585580331105 [2023-08-27 06:24:54,353 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7413 transitions. [2023-08-27 06:24:54,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7413 transitions. [2023-08-27 06:24:54,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:24:54,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7413 transitions. [2023-08-27 06:24:54,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 239.1290322580645) internal successors, (7413), 31 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:54,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:54,367 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:24:54,367 INFO L175 Difference]: Start difference. First operand has 702 places, 2392 transitions, 67790 flow. Second operand 31 states and 7413 transitions. [2023-08-27 06:24:54,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2666 transitions, 80108 flow [2023-08-27 06:25:05,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 2666 transitions, 78952 flow, removed 296 selfloop flow, removed 17 redundant places. [2023-08-27 06:25:05,523 INFO L231 Difference]: Finished difference. Result has 721 places, 2513 transitions, 72709 flow [2023-08-27 06:25:05,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=66742, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=72709, PETRI_PLACES=721, PETRI_TRANSITIONS=2513} [2023-08-27 06:25:05,525 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 680 predicate places. [2023-08-27 06:25:05,525 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 2513 transitions, 72709 flow [2023-08-27 06:25:05,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:05,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:25:05,526 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:25:05,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-27 06:25:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-08-27 06:25:05,727 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:25:05,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:25:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash 129564589, now seen corresponding path program 43 times [2023-08-27 06:25:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:25:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172094359] [2023-08-27 06:25:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:25:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:25:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:25:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:25:06,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:25:06,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172094359] [2023-08-27 06:25:06,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172094359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:25:06,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392372144] [2023-08-27 06:25:06,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:25:06,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:25:06,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:25:06,168 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:25:06,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-27 06:25:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:25:06,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 06:25:06,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:25:06,612 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 111 treesize of output 79 [2023-08-27 06:25:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:25:06,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:25:06,932 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:25:06,932 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 73 treesize of output 49 [2023-08-27 06:25:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:25:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392372144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:25:07,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:25:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2023-08-27 06:25:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433408780] [2023-08-27 06:25:07,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:25:07,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:25:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:25:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:25:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:25:07,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-27 06:25:07,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 2513 transitions, 72709 flow. Second operand has 19 states, 19 states have (on average 247.10526315789474) internal successors, (4695), 19 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:07,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:25:07,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-27 06:25:07,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:25:20,893 INFO L124 PetriNetUnfolderBase]: 7888/16107 cut-off events. [2023-08-27 06:25:20,893 INFO L125 PetriNetUnfolderBase]: For 683638/683638 co-relation queries the response was YES. [2023-08-27 06:25:21,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183945 conditions, 16107 events. 7888/16107 cut-off events. For 683638/683638 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 154525 event pairs, 2304 based on Foata normal form. 48/16155 useless extension candidates. Maximal degree in co-relation 183743. Up to 10125 conditions per place. [2023-08-27 06:25:21,202 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 1846 selfloop transitions, 645 changer transitions 26/2517 dead transitions. [2023-08-27 06:25:21,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2517 transitions, 77545 flow [2023-08-27 06:25:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:25:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:25:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3495 transitions. [2023-08-27 06:25:21,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472084243989668 [2023-08-27 06:25:21,205 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3495 transitions. [2023-08-27 06:25:21,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3495 transitions. [2023-08-27 06:25:21,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:25:21,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3495 transitions. [2023-08-27 06:25:21,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 249.64285714285714) internal successors, (3495), 14 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,212 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:21,212 INFO L175 Difference]: Start difference. First operand has 721 places, 2513 transitions, 72709 flow. Second operand 14 states and 3495 transitions. [2023-08-27 06:25:21,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2517 transitions, 77545 flow [2023-08-27 06:25:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 2517 transitions, 76101 flow, removed 217 selfloop flow, removed 17 redundant places. [2023-08-27 06:25:32,003 INFO L231 Difference]: Finished difference. Result has 712 places, 2467 transitions, 71382 flow [2023-08-27 06:25:32,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=70103, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=71382, PETRI_PLACES=712, PETRI_TRANSITIONS=2467} [2023-08-27 06:25:32,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 671 predicate places. [2023-08-27 06:25:32,005 INFO L495 AbstractCegarLoop]: Abstraction has has 712 places, 2467 transitions, 71382 flow [2023-08-27 06:25:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.10526315789474) internal successors, (4695), 19 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:32,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:25:32,006 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:25:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-27 06:25:32,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-08-27 06:25:32,207 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:25:32,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:25:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1142867257, now seen corresponding path program 44 times [2023-08-27 06:25:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:25:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951901290] [2023-08-27 06:25:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:25:32,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:25:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:25:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:25:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:25:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951901290] [2023-08-27 06:25:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951901290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:25:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111440144] [2023-08-27 06:25:33,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:25:33,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:25:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:25:33,360 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:25:33,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-27 06:25:33,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:25:33,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:25:33,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 06:25:33,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:25:34,473 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:25:34,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 147 [2023-08-27 06:25:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:25:34,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:25:38,383 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:25:38,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 479 treesize of output 321 [2023-08-27 06:25:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:25:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111440144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:25:38,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:25:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 31 [2023-08-27 06:25:38,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496443710] [2023-08-27 06:25:38,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:25:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 06:25:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:25:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 06:25:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2023-08-27 06:25:38,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:25:38,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 2467 transitions, 71382 flow. Second operand has 32 states, 32 states have (on average 218.6875) internal successors, (6998), 32 states have internal predecessors, (6998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:25:38,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:25:38,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:25:38,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:26:02,051 INFO L124 PetriNetUnfolderBase]: 8238/16927 cut-off events. [2023-08-27 06:26:02,051 INFO L125 PetriNetUnfolderBase]: For 735588/735588 co-relation queries the response was YES. [2023-08-27 06:26:02,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190941 conditions, 16927 events. 8238/16927 cut-off events. For 735588/735588 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 164784 event pairs, 2181 based on Foata normal form. 24/16951 useless extension candidates. Maximal degree in co-relation 190743. Up to 10210 conditions per place. [2023-08-27 06:26:02,597 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1851 selfloop transitions, 865 changer transitions 29/2745 dead transitions. [2023-08-27 06:26:02,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 2745 transitions, 83451 flow [2023-08-27 06:26:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-27 06:26:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-27 06:26:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 7774 transitions. [2023-08-27 06:26:02,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089211206040135 [2023-08-27 06:26:02,602 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 7774 transitions. [2023-08-27 06:26:02,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 7774 transitions. [2023-08-27 06:26:02,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:26:02,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 7774 transitions. [2023-08-27 06:26:02,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 222.11428571428573) internal successors, (7774), 35 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:02,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 719.0) internal successors, (25884), 36 states have internal predecessors, (25884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:02,619 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 719.0) internal successors, (25884), 36 states have internal predecessors, (25884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:02,619 INFO L175 Difference]: Start difference. First operand has 712 places, 2467 transitions, 71382 flow. Second operand 35 states and 7774 transitions. [2023-08-27 06:26:02,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 2745 transitions, 83451 flow [2023-08-27 06:26:14,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 2745 transitions, 82661 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-08-27 06:26:14,161 INFO L231 Difference]: Finished difference. Result has 737 places, 2600 transitions, 76627 flow [2023-08-27 06:26:14,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=70613, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=76627, PETRI_PLACES=737, PETRI_TRANSITIONS=2600} [2023-08-27 06:26:14,163 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 696 predicate places. [2023-08-27 06:26:14,163 INFO L495 AbstractCegarLoop]: Abstraction has has 737 places, 2600 transitions, 76627 flow [2023-08-27 06:26:14,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 218.6875) internal successors, (6998), 32 states have internal predecessors, (6998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:14,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:26:14,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:26:14,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-27 06:26:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:14,365 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:26:14,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:26:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash 229900729, now seen corresponding path program 45 times [2023-08-27 06:26:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:26:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946884350] [2023-08-27 06:26:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:26:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:26:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:26:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:26:15,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:26:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946884350] [2023-08-27 06:26:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946884350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:26:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503460622] [2023-08-27 06:26:15,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:26:15,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:15,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:26:15,487 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:26:15,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-27 06:26:15,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:26:15,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:26:15,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 06:26:15,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:26:16,088 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 06:26:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:26:16,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:26:18,517 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:26:18,518 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 419 treesize of output 291 [2023-08-27 06:26:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:19,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503460622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:26:19,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:26:19,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 31 [2023-08-27 06:26:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123108933] [2023-08-27 06:26:19,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:26:19,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 06:26:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:26:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 06:26:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2023-08-27 06:26:19,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 719 [2023-08-27 06:26:19,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 2600 transitions, 76627 flow. Second operand has 32 states, 32 states have (on average 222.6875) internal successors, (7126), 32 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:19,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:26:19,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 719 [2023-08-27 06:26:19,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:26:38,705 INFO L124 PetriNetUnfolderBase]: 9242/18483 cut-off events. [2023-08-27 06:26:38,706 INFO L125 PetriNetUnfolderBase]: For 868806/868806 co-relation queries the response was YES. [2023-08-27 06:26:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215813 conditions, 18483 events. 9242/18483 cut-off events. For 868806/868806 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 177423 event pairs, 2056 based on Foata normal form. 28/18511 useless extension candidates. Maximal degree in co-relation 215608. Up to 10205 conditions per place. [2023-08-27 06:26:39,073 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 2063 selfloop transitions, 1004 changer transitions 35/3102 dead transitions. [2023-08-27 06:26:39,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 3102 transitions, 96801 flow [2023-08-27 06:26:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-27 06:26:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-27 06:26:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7671 transitions. [2023-08-27 06:26:39,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3137936676756934 [2023-08-27 06:26:39,078 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7671 transitions. [2023-08-27 06:26:39,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7671 transitions. [2023-08-27 06:26:39,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:26:39,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7671 transitions. [2023-08-27 06:26:39,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 225.61764705882354) internal successors, (7671), 34 states have internal predecessors, (7671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:39,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 719.0) internal successors, (25165), 35 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:39,093 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 719.0) internal successors, (25165), 35 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:39,093 INFO L175 Difference]: Start difference. First operand has 737 places, 2600 transitions, 76627 flow. Second operand 34 states and 7671 transitions. [2023-08-27 06:26:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 3102 transitions, 96801 flow [2023-08-27 06:26:53,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 750 places, 3102 transitions, 95510 flow, removed 565 selfloop flow, removed 18 redundant places. [2023-08-27 06:26:53,319 INFO L231 Difference]: Finished difference. Result has 765 places, 2928 transitions, 89779 flow [2023-08-27 06:26:53,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=75256, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=89779, PETRI_PLACES=765, PETRI_TRANSITIONS=2928} [2023-08-27 06:26:53,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 724 predicate places. [2023-08-27 06:26:53,321 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 2928 transitions, 89779 flow [2023-08-27 06:26:53,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 222.6875) internal successors, (7126), 32 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:53,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:26:53,322 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:26:53,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-27 06:26:53,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:53,522 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:26:53,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:26:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -966906131, now seen corresponding path program 46 times [2023-08-27 06:26:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:26:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118415371] [2023-08-27 06:26:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:26:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:26:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:26:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:26:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118415371] [2023-08-27 06:26:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118415371] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:26:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099238832] [2023-08-27 06:26:54,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:26:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:26:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:26:54,393 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:26:54,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-27 06:26:54,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:26:54,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:26:54,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 06:26:54,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:26:55,299 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:26:55,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 118 [2023-08-27 06:26:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:55,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:26:58,755 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:26:58,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 547 treesize of output 407 [2023-08-27 06:26:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:26:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099238832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:26:59,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:26:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-27 06:26:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305128084] [2023-08-27 06:26:59,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:26:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:26:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:26:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:26:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-08-27 06:26:59,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:26:59,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 2928 transitions, 89779 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:26:59,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:26:59,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:26:59,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:27:23,781 INFO L124 PetriNetUnfolderBase]: 9380/18739 cut-off events. [2023-08-27 06:27:23,781 INFO L125 PetriNetUnfolderBase]: For 965974/965974 co-relation queries the response was YES. [2023-08-27 06:27:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225086 conditions, 18739 events. 9380/18739 cut-off events. For 965974/965974 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 180328 event pairs, 1662 based on Foata normal form. 34/18773 useless extension candidates. Maximal degree in co-relation 224869. Up to 8368 conditions per place. [2023-08-27 06:27:24,248 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1748 selfloop transitions, 1355 changer transitions 37/3140 dead transitions. [2023-08-27 06:27:24,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 3140 transitions, 101986 flow [2023-08-27 06:27:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 06:27:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 06:27:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6464 transitions. [2023-08-27 06:27:24,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3329727502189255 [2023-08-27 06:27:24,252 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6464 transitions. [2023-08-27 06:27:24,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6464 transitions. [2023-08-27 06:27:24,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:27:24,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6464 transitions. [2023-08-27 06:27:24,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 239.40740740740742) internal successors, (6464), 27 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:27:24,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 719.0) internal successors, (20132), 28 states have internal predecessors, (20132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:27:24,265 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 719.0) internal successors, (20132), 28 states have internal predecessors, (20132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:27:24,265 INFO L175 Difference]: Start difference. First operand has 765 places, 2928 transitions, 89779 flow. Second operand 27 states and 6464 transitions. [2023-08-27 06:27:24,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 3140 transitions, 101986 flow [2023-08-27 06:27:40,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 3140 transitions, 100666 flow, removed 576 selfloop flow, removed 14 redundant places. [2023-08-27 06:27:40,778 INFO L231 Difference]: Finished difference. Result has 781 places, 3010 transitions, 94243 flow [2023-08-27 06:27:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=88471, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=94243, PETRI_PLACES=781, PETRI_TRANSITIONS=3010} [2023-08-27 06:27:40,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 740 predicate places. [2023-08-27 06:27:40,781 INFO L495 AbstractCegarLoop]: Abstraction has has 781 places, 3010 transitions, 94243 flow [2023-08-27 06:27:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:27:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:27:40,782 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:27:40,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-27 06:27:40,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:27:40,997 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:27:40,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:27:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1654315909, now seen corresponding path program 47 times [2023-08-27 06:27:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:27:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991267862] [2023-08-27 06:27:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:27:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:27:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:27:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:27:42,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:27:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991267862] [2023-08-27 06:27:42,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991267862] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:27:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246784121] [2023-08-27 06:27:42,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:27:42,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:27:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:27:42,070 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:27:42,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-27 06:27:42,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:27:42,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:27:42,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 06:27:42,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:27:42,856 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:27:42,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 126 [2023-08-27 06:27:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:27:43,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:27:46,642 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:27:46,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 250 treesize of output 164 [2023-08-27 06:27:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:27:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246784121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:27:46,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:27:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 31 [2023-08-27 06:27:46,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113178357] [2023-08-27 06:27:46,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:27:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 06:27:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:27:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 06:27:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2023-08-27 06:27:46,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:27:46,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 781 places, 3010 transitions, 94243 flow. Second operand has 32 states, 32 states have (on average 218.71875) internal successors, (6999), 32 states have internal predecessors, (6999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:27:46,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:27:46,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:27:46,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:28:13,733 INFO L124 PetriNetUnfolderBase]: 9818/19563 cut-off events. [2023-08-27 06:28:13,733 INFO L125 PetriNetUnfolderBase]: For 1086436/1086436 co-relation queries the response was YES. [2023-08-27 06:28:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240719 conditions, 19563 events. 9818/19563 cut-off events. For 1086436/1086436 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 188809 event pairs, 1802 based on Foata normal form. 72/19635 useless extension candidates. Maximal degree in co-relation 240498. Up to 9969 conditions per place. [2023-08-27 06:28:14,181 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1876 selfloop transitions, 1408 changer transitions 26/3310 dead transitions. [2023-08-27 06:28:14,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 3310 transitions, 109673 flow [2023-08-27 06:28:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 06:28:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 06:28:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6888 transitions. [2023-08-27 06:28:14,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090313607609135 [2023-08-27 06:28:14,186 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 6888 transitions. [2023-08-27 06:28:14,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 6888 transitions. [2023-08-27 06:28:14,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:28:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 6888 transitions. [2023-08-27 06:28:14,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 222.19354838709677) internal successors, (6888), 31 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:14,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:14,201 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:14,201 INFO L175 Difference]: Start difference. First operand has 781 places, 3010 transitions, 94243 flow. Second operand 31 states and 6888 transitions. [2023-08-27 06:28:14,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 3310 transitions, 109673 flow [2023-08-27 06:28:32,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 3310 transitions, 107701 flow, removed 393 selfloop flow, removed 16 redundant places. [2023-08-27 06:28:32,350 INFO L231 Difference]: Finished difference. Result has 803 places, 3182 transitions, 103248 flow [2023-08-27 06:28:32,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=91949, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=103248, PETRI_PLACES=803, PETRI_TRANSITIONS=3182} [2023-08-27 06:28:32,353 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 762 predicate places. [2023-08-27 06:28:32,353 INFO L495 AbstractCegarLoop]: Abstraction has has 803 places, 3182 transitions, 103248 flow [2023-08-27 06:28:32,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 218.71875) internal successors, (6999), 32 states have internal predecessors, (6999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:32,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:28:32,355 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:28:32,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-27 06:28:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:28:32,561 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:28:32,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:28:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1682136019, now seen corresponding path program 48 times [2023-08-27 06:28:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:28:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189845253] [2023-08-27 06:28:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:28:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:28:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:28:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:28:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:28:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189845253] [2023-08-27 06:28:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189845253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:28:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774844478] [2023-08-27 06:28:33,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:28:33,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:28:33,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:28:33,616 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:28:33,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-27 06:28:33,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:28:33,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:28:33,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 06:28:33,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:28:34,555 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:28:34,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 118 [2023-08-27 06:28:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:28:34,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:28:36,909 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:28:36,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 175 [2023-08-27 06:28:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:28:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774844478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:28:37,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:28:37,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-27 06:28:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648081698] [2023-08-27 06:28:37,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:28:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:28:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:28:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:28:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-08-27 06:28:37,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-27 06:28:37,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 3182 transitions, 103248 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:28:37,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:28:37,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-27 06:28:37,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:29:10,894 INFO L124 PetriNetUnfolderBase]: 11559/23654 cut-off events. [2023-08-27 06:29:10,894 INFO L125 PetriNetUnfolderBase]: For 1358925/1358925 co-relation queries the response was YES. [2023-08-27 06:29:12,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296077 conditions, 23654 events. 11559/23654 cut-off events. For 1358925/1358925 co-relation queries the response was YES. Maximal size of possible extension queue 1730. Compared 240808 event pairs, 1658 based on Foata normal form. 20/23674 useless extension candidates. Maximal degree in co-relation 295850. Up to 9078 conditions per place. [2023-08-27 06:29:12,331 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1870 selfloop transitions, 2165 changer transitions 24/4059 dead transitions. [2023-08-27 06:29:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 4059 transitions, 139757 flow [2023-08-27 06:29:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 06:29:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 06:29:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7168 transitions. [2023-08-27 06:29:12,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323133982382939 [2023-08-27 06:29:12,339 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7168 transitions. [2023-08-27 06:29:12,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7168 transitions. [2023-08-27 06:29:12,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:29:12,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7168 transitions. [2023-08-27 06:29:12,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 238.93333333333334) internal successors, (7168), 30 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:29:12,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:29:12,356 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:29:12,356 INFO L175 Difference]: Start difference. First operand has 803 places, 3182 transitions, 103248 flow. Second operand 30 states and 7168 transitions. [2023-08-27 06:29:12,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 4059 transitions, 139757 flow [2023-08-27 06:29:38,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 4059 transitions, 136467 flow, removed 815 selfloop flow, removed 13 redundant places. [2023-08-27 06:29:38,912 INFO L231 Difference]: Finished difference. Result has 837 places, 3753 transitions, 128598 flow [2023-08-27 06:29:38,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=100556, PETRI_DIFFERENCE_MINUEND_PLACES=789, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=128598, PETRI_PLACES=837, PETRI_TRANSITIONS=3753} [2023-08-27 06:29:38,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 796 predicate places. [2023-08-27 06:29:38,915 INFO L495 AbstractCegarLoop]: Abstraction has has 837 places, 3753 transitions, 128598 flow [2023-08-27 06:29:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:29:38,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:29:38,916 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:29:38,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-27 06:29:39,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:29:39,123 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:29:39,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:29:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash 11197223, now seen corresponding path program 49 times [2023-08-27 06:29:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:29:39,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687515051] [2023-08-27 06:29:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:29:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:29:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:29:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:29:40,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:29:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687515051] [2023-08-27 06:29:40,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687515051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:29:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332767239] [2023-08-27 06:29:40,155 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:29:40,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:29:40,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:29:40,157 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:29:40,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-27 06:29:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:29:40,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 06:29:40,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:29:41,181 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:29:41,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 92 [2023-08-27 06:29:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:29:41,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:29:44,669 INFO L322 Elim1Store]: treesize reduction 13, result has 62.9 percent of original size [2023-08-27 06:29:44,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 95 [2023-08-27 06:29:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:29:44,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332767239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:29:44,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:29:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 32 [2023-08-27 06:29:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580653380] [2023-08-27 06:29:44,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:29:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 06:29:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:29:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 06:29:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2023-08-27 06:29:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-27 06:29:44,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 3753 transitions, 128598 flow. Second operand has 33 states, 33 states have (on average 218.72727272727272) internal successors, (7218), 33 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:29:44,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:29:44,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-27 06:29:44,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 06:29:48,715 WARN L266 SmtUtils]: Removed 3 from assertion stack [2023-08-27 06:29:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:29:48,717 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (38 of 39 remaining) [2023-08-27 06:29:48,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-27 06:29:48,743 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:29:48,746 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 06:29:48,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:29:48,918 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-08-27 06:29:48,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2023-08-27 06:29:48,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-08-27 06:29:48,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-08-27 06:29:48,922 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-08-27 06:29:48,923 INFO L445 BasicCegarLoop]: Path program histogram: [49, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:29:48,927 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:29:48,928 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:29:48,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:29:48 BasicIcfg [2023-08-27 06:29:48,930 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:29:48,931 INFO L158 Benchmark]: Toolchain (without parser) took 746412.24ms. Allocated memory was 381.7MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 356.2MB in the beginning and 3.7GB in the end (delta: -3.3GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-08-27 06:29:48,931 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory was 359.4MB in the beginning and 359.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:29:48,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.01ms. Allocated memory is still 381.7MB. Free memory was 356.2MB in the beginning and 344.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 06:29:48,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.99ms. Allocated memory is still 381.7MB. Free memory was 343.6MB in the beginning and 341.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:29:48,931 INFO L158 Benchmark]: Boogie Preprocessor took 36.86ms. Allocated memory is still 381.7MB. Free memory was 341.5MB in the beginning and 339.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:29:48,931 INFO L158 Benchmark]: RCFGBuilder took 654.99ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 314.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 06:29:48,932 INFO L158 Benchmark]: TraceAbstraction took 745362.82ms. Allocated memory was 381.7MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 313.5MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-27 06:29:48,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory was 359.4MB in the beginning and 359.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 301.01ms. Allocated memory is still 381.7MB. Free memory was 356.2MB in the beginning and 344.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.99ms. Allocated memory is still 381.7MB. Free memory was 343.6MB in the beginning and 341.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.86ms. Allocated memory is still 381.7MB. Free memory was 341.5MB in the beginning and 339.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 654.99ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 314.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 745362.82ms. Allocated memory was 381.7MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 313.5MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.7s, 295 PlacesBefore, 41 PlacesAfterwards, 311 TransitionsBefore, 37 TransitionsAfterwards, 18512 CoEnabledTransitionPairs, 8 FixpointIterations, 115 TrivialSequentialCompositions, 201 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 50 ConcurrentYvCompositions, 20 ChoiceCompositions, 397 TotalNumberOfCompositions, 18141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17923, independent: 17910, independent conditional: 0, independent unconditional: 17910, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10923, independent: 10917, independent conditional: 0, independent unconditional: 10917, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17923, independent: 6993, independent conditional: 0, independent unconditional: 6993, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 10923, unknown conditional: 0, unknown unconditional: 10923] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 114 for 13ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 464 locations, 39 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: 745.2s, OverallIterations: 76, TraceHistogramMax: 4, PathProgramHistogramMax: 49, EmptinessCheckTime: 0.0s, AutomataDifference: 562.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9234 SdHoareTripleChecker+Valid, 26.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9234 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 23.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 158 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1718 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37176 IncrementalHoareTripleChecker+Invalid, 39052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1718 mSolverCounterUnsat, 0 mSDtfsCounter, 37176 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4131 GetRequests, 1845 SyntacticMatches, 29 SemanticMatches, 2256 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 26073 ImplicationChecksByTransitivity, 191.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128598occurred in iteration=75, InterpolantAutomatonStates: 1310, 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: 1.0s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 141.8s InterpolantComputationTime, 2339 NumberOfCodeBlocks, 2327 NumberOfCodeBlocksAsserted, 193 NumberOfCheckSat, 3160 ConstructedInterpolants, 9 QuantifiedInterpolants, 74035 SizeOfPredicates, 1551 NumberOfNonLiveVariables, 12624 ConjunctsInSsa, 2072 ConjunctsInUnsatCore, 184 InterpolantComputations, 24 PerfectInterpolantSequences, 1145/1712 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