/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:45:09,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:45:09,450 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 09:45:09,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:45:09,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:45:09,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:45:09,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:45:09,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:45:09,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:45:09,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:45:09,496 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:45:09,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:45:09,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:45:09,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:45:09,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:45:09,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:45:09,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:45:09,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:45:09,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:45:09,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:45:09,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:45:09,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:45:09,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:45:09,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:45:09,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:45:09,501 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:45:09,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:45:09,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:45:09,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:45:09,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:45:09,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:45:09,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:45:09,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:45:09,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:45:09,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:45:09,504 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:45:09,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:45:09,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:45:09,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:45:09,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:45:09,838 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:45:09,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-27 09:45:11,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:45:11,327 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:45:11,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-27 09:45:11,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c5a51bc/75aba831b2494d1ba3a202a616919015/FLAG668b57f2d [2023-08-27 09:45:11,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c5a51bc/75aba831b2494d1ba3a202a616919015 [2023-08-27 09:45:11,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:45:11,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:45:11,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:45:11,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:45:11,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:45:11,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1c216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11, skipping insertion in model container [2023-08-27 09:45:11,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,396 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:45:11,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:45:11,748 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:45:11,775 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-27 09:45:11,777 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-27 09:45:11,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:45:11,847 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:45:11,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11 WrapperNode [2023-08-27 09:45:11,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:45:11,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:45:11,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:45:11,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:45:11,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,902 INFO L138 Inliner]: procedures = 177, calls = 48, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 201 [2023-08-27 09:45:11,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:45:11,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:45:11,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:45:11,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:45:11,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:45:11,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:45:11,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:45:11,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:45:11,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (1/1) ... [2023-08-27 09:45:11,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:45:11,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:45:11,975 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 09:45:11,980 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 09:45:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:45:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 09:45:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 09:45:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:45:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:45:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:45:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:45:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:45:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:45:12,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:45:12,011 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 09:45:12,149 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:45:12,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:45:12,398 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:45:12,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:45:12,531 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 09:45:12,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:12 BoogieIcfgContainer [2023-08-27 09:45:12,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:45:12,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:45:12,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:45:12,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:45:12,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:45:11" (1/3) ... [2023-08-27 09:45:12,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318afcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:12, skipping insertion in model container [2023-08-27 09:45:12,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:11" (2/3) ... [2023-08-27 09:45:12,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318afcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:12, skipping insertion in model container [2023-08-27 09:45:12,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:12" (3/3) ... [2023-08-27 09:45:12,541 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2023-08-27 09:45:12,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:45:12,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 09:45:12,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:45:12,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:45:12,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,739 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-27 09:45:12,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:45:12,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-27 09:45:12,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,752 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:45:12,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:45:12,817 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-27 09:45:12,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:45:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-27 09:45:12,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-27 09:45:17,752 INFO L134 LiptonReduction]: Checked pairs total: 2857 [2023-08-27 09:45:17,752 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-27 09:45:17,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:45:17,767 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;@42c6d619, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:45:17,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 09:45:17,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:45:17,771 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-08-27 09:45:17,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:45:17,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:17,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:17,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:17,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1700752710, now seen corresponding path program 1 times [2023-08-27 09:45:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518311191] [2023-08-27 09:45:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:17,993 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 09:45:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518311191] [2023-08-27 09:45:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518311191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:17,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:17,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:45:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76669323] [2023-08-27 09:45:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:18,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:45:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:45:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:45:18,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 274 [2023-08-27 09:45:18,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:18,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 274 [2023-08-27 09:45:18,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:18,132 INFO L124 PetriNetUnfolderBase]: 52/119 cut-off events. [2023-08-27 09:45:18,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:45:18,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 119 events. 52/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 2 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 228. Up to 108 conditions per place. [2023-08-27 09:45:18,137 INFO L140 encePairwiseOnDemand]: 263/274 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-27 09:45:18,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-27 09:45:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:45:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:45:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-27 09:45:18,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683698296836983 [2023-08-27 09:45:18,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-27 09:45:18,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-27 09:45:18,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:18,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-27 09:45:18,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,177 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 385 transitions. [2023-08-27 09:45:18,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-27 09:45:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:45:18,181 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-27 09:45:18,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-27 09:45:18,189 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-27 09:45:18,189 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-27 09:45:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:18,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:45:18,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:18,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -77427529, now seen corresponding path program 1 times [2023-08-27 09:45:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826027451] [2023-08-27 09:45:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:18,373 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 09:45:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826027451] [2023-08-27 09:45:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826027451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:45:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346465618] [2023-08-27 09:45:18,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:18,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:45:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:45:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:45:18,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 274 [2023-08-27 09:45:18,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 274 [2023-08-27 09:45:18,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:18,448 INFO L124 PetriNetUnfolderBase]: 58/134 cut-off events. [2023-08-27 09:45:18,448 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:45:18,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 134 events. 58/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 362 event pairs, 12 based on Foata normal form. 3/107 useless extension candidates. Maximal degree in co-relation 261. Up to 98 conditions per place. [2023-08-27 09:45:18,449 INFO L140 encePairwiseOnDemand]: 268/274 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-27 09:45:18,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-27 09:45:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:45:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:45:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-27 09:45:18,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172749391727494 [2023-08-27 09:45:18,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-27 09:45:18,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-27 09:45:18,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:18,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-27 09:45:18,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,456 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 343 transitions. [2023-08-27 09:45:18,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-27 09:45:18,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:45:18,457 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-27 09:45:18,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-27 09:45:18,458 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-27 09:45:18,458 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-27 09:45:18,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:18,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:18,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:45:18,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:18,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash -245149443, now seen corresponding path program 1 times [2023-08-27 09:45:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:18,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891621022] [2023-08-27 09:45:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:18,556 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 09:45:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891621022] [2023-08-27 09:45:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891621022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:45:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403957075] [2023-08-27 09:45:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:45:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:45:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:45:18,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 274 [2023-08-27 09:45:18,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:18,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 274 [2023-08-27 09:45:18,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:18,682 INFO L124 PetriNetUnfolderBase]: 99/214 cut-off events. [2023-08-27 09:45:18,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:45:18,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 214 events. 99/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 527 event pairs, 12 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 451. Up to 110 conditions per place. [2023-08-27 09:45:18,684 INFO L140 encePairwiseOnDemand]: 265/274 looper letters, 45 selfloop transitions, 9 changer transitions 1/56 dead transitions. [2023-08-27 09:45:18,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 56 transitions, 251 flow [2023-08-27 09:45:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:45:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:45:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-27 09:45:18,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802919708029197 [2023-08-27 09:45:18,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-27 09:45:18,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-27 09:45:18,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:18,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-27 09:45:18,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,691 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,691 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 5 states and 521 transitions. [2023-08-27 09:45:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 56 transitions, 251 flow [2023-08-27 09:45:18,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 56 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:45:18,693 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 143 flow [2023-08-27 09:45:18,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-08-27 09:45:18,694 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-27 09:45:18,694 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 143 flow [2023-08-27 09:45:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:18,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:45:18,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:18,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -245149438, now seen corresponding path program 1 times [2023-08-27 09:45:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049560151] [2023-08-27 09:45:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:18,776 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 09:45:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049560151] [2023-08-27 09:45:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049560151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:18,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:45:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114864609] [2023-08-27 09:45:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:45:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:45:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:45:18,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 274 [2023-08-27 09:45:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:18,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 274 [2023-08-27 09:45:18,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:18,929 INFO L124 PetriNetUnfolderBase]: 103/224 cut-off events. [2023-08-27 09:45:18,929 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-27 09:45:18,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 224 events. 103/224 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 542 event pairs, 6 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 540. Up to 81 conditions per place. [2023-08-27 09:45:18,931 INFO L140 encePairwiseOnDemand]: 263/274 looper letters, 47 selfloop transitions, 13 changer transitions 1/62 dead transitions. [2023-08-27 09:45:18,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 319 flow [2023-08-27 09:45:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:45:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:45:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 622 transitions. [2023-08-27 09:45:18,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32429614181439 [2023-08-27 09:45:18,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 622 transitions. [2023-08-27 09:45:18,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 622 transitions. [2023-08-27 09:45:18,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:18,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 622 transitions. [2023-08-27 09:45:18,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,939 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,939 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 143 flow. Second operand 7 states and 622 transitions. [2023-08-27 09:45:18,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 319 flow [2023-08-27 09:45:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 303 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 09:45:18,942 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 181 flow [2023-08-27 09:45:18,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-27 09:45:18,943 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-27 09:45:18,943 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 181 flow [2023-08-27 09:45:18,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:18,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:18,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:18,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:45:18,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:18,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -245149440, now seen corresponding path program 1 times [2023-08-27 09:45:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:18,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824141239] [2023-08-27 09:45:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824141239] [2023-08-27 09:45:19,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824141239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:19,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:19,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:45:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698166200] [2023-08-27 09:45:19,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:45:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:45:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:45:19,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 274 [2023-08-27 09:45:19,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:19,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 274 [2023-08-27 09:45:19,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:19,165 INFO L124 PetriNetUnfolderBase]: 101/219 cut-off events. [2023-08-27 09:45:19,166 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-27 09:45:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 219 events. 101/219 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 526 event pairs, 12 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 581. Up to 120 conditions per place. [2023-08-27 09:45:19,171 INFO L140 encePairwiseOnDemand]: 263/274 looper letters, 46 selfloop transitions, 11 changer transitions 1/59 dead transitions. [2023-08-27 09:45:19,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 341 flow [2023-08-27 09:45:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:45:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:45:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-08-27 09:45:19,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3222106360792492 [2023-08-27 09:45:19,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-08-27 09:45:19,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-08-27 09:45:19,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:19,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-08-27 09:45:19,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,184 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 181 flow. Second operand 7 states and 618 transitions. [2023-08-27 09:45:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 341 flow [2023-08-27 09:45:19,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 329 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:45:19,191 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 197 flow [2023-08-27 09:45:19,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-27 09:45:19,194 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-27 09:45:19,195 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 197 flow [2023-08-27 09:45:19,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:19,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:19,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:45:19,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:19,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash -21378504, now seen corresponding path program 1 times [2023-08-27 09:45:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689519209] [2023-08-27 09:45:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:19,618 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 09:45:19,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689519209] [2023-08-27 09:45:19,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689519209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:19,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:45:19,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:45:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007405153] [2023-08-27 09:45:19,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:45:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:19,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:45:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:45:19,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 274 [2023-08-27 09:45:19,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 197 flow. Second operand has 9 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:19,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 274 [2023-08-27 09:45:19,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:19,909 INFO L124 PetriNetUnfolderBase]: 133/324 cut-off events. [2023-08-27 09:45:19,910 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 09:45:19,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 324 events. 133/324 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1110 event pairs, 6 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 903. Up to 102 conditions per place. [2023-08-27 09:45:19,912 INFO L140 encePairwiseOnDemand]: 261/274 looper letters, 61 selfloop transitions, 32 changer transitions 0/94 dead transitions. [2023-08-27 09:45:19,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 94 transitions, 630 flow [2023-08-27 09:45:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 09:45:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 09:45:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 881 transitions. [2023-08-27 09:45:19,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32153284671532845 [2023-08-27 09:45:19,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 881 transitions. [2023-08-27 09:45:19,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 881 transitions. [2023-08-27 09:45:19,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:19,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 881 transitions. [2023-08-27 09:45:19,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.1) internal successors, (881), 10 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 09:45:19,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,923 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,923 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 197 flow. Second operand 10 states and 881 transitions. [2023-08-27 09:45:19,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 94 transitions, 630 flow [2023-08-27 09:45:19,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 94 transitions, 574 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-27 09:45:19,927 INFO L231 Difference]: Finished difference. Result has 54 places, 62 transitions, 347 flow [2023-08-27 09:45:19,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2023-08-27 09:45:19,928 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-08-27 09:45:19,928 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 347 flow [2023-08-27 09:45:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:19,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:19,929 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:45:19,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:19,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1210082629, now seen corresponding path program 1 times [2023-08-27 09:45:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556532849] [2023-08-27 09:45:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:20,370 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 09:45:20,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556532849] [2023-08-27 09:45:20,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556532849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:45:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193644244] [2023-08-27 09:45:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:20,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:45:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:45:20,381 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 09:45:20,421 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 09:45:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:20,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 09:45:20,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:45:20,595 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:45:20,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 09:45:20,869 INFO L322 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-08-27 09:45:20,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2023-08-27 09:45:20,900 INFO L322 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2023-08-27 09:45:20,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 81 [2023-08-27 09:45:20,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-27 09:45:20,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-27 09:45:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:45:20,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 9 [2023-08-27 09:45:20,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-08-27 09:45:21,022 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:45:21,023 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2023-08-27 09:45:21,061 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 14 treesize of output 16 [2023-08-27 09:45:21,087 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 09:45:21,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:45:23,201 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse1 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse0 |c_~#top~0.offset|)))) (and (or (forall ((v_ArrVal_166 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| Int) (v_ArrVal_169 (Array Int Int))) (not (= (select (select (store (store (store |c_#memory_int| |c_~#top~0.base| (store .cse0 |c_~#top~0.offset| |c_thr1Thread1of1ForFork0_push_~newTop~0#1|)) |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| (store (select (store |c_#memory_int| |c_~#top~0.base| v_ArrVal_166) |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7|) |c_thr1Thread1of1ForFork0_push_~#casret~0#1.offset| 1)) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_169) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (not .cse1)) (or .cse1 (forall ((|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_169 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| v_ArrVal_168) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_169) |c_~#top~0.base|) |c_~#top~0.offset|) 0))))))) is different from false [2023-08-27 09:45:23,258 INFO L322 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2023-08-27 09:45:23,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 73 [2023-08-27 09:45:23,266 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:45:23,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-08-27 09:45:23,279 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:45:23,279 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 146 treesize of output 146 [2023-08-27 09:45:23,288 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 52 treesize of output 48 [2023-08-27 09:45:23,298 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:45:23,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2023-08-27 09:45:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193644244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:45:23,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:45:23,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-08-27 09:45:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431816573] [2023-08-27 09:45:23,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:45:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 09:45:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 09:45:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=437, Unknown=3, NotChecked=42, Total=552 [2023-08-27 09:45:23,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 274 [2023-08-27 09:45:23,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 49.25) internal successors, (1182), 24 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:23,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:23,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 274 [2023-08-27 09:45:23,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:32,592 WARN L234 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 67 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 09:45:34,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:45:40,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:45:58,894 INFO L124 PetriNetUnfolderBase]: 232/681 cut-off events. [2023-08-27 09:45:58,894 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-08-27 09:45:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 681 events. 232/681 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3308 event pairs, 17 based on Foata normal form. 8/595 useless extension candidates. Maximal degree in co-relation 2090. Up to 146 conditions per place. [2023-08-27 09:45:58,899 INFO L140 encePairwiseOnDemand]: 255/274 looper letters, 112 selfloop transitions, 128 changer transitions 3/244 dead transitions. [2023-08-27 09:45:58,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 244 transitions, 1619 flow [2023-08-27 09:45:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 09:45:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 09:45:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2024 transitions. [2023-08-27 09:45:58,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18940670035560547 [2023-08-27 09:45:58,907 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2024 transitions. [2023-08-27 09:45:58,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2024 transitions. [2023-08-27 09:45:58,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:58,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2024 transitions. [2023-08-27 09:45:58,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 51.8974358974359) internal successors, (2024), 39 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:58,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 274.0) internal successors, (10960), 40 states have internal predecessors, (10960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:58,924 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 274.0) internal successors, (10960), 40 states have internal predecessors, (10960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:58,924 INFO L175 Difference]: Start difference. First operand has 54 places, 62 transitions, 347 flow. Second operand 39 states and 2024 transitions. [2023-08-27 09:45:58,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 244 transitions, 1619 flow [2023-08-27 09:45:58,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 244 transitions, 1589 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 09:45:58,931 INFO L231 Difference]: Finished difference. Result has 94 places, 155 transitions, 1164 flow [2023-08-27 09:45:58,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1164, PETRI_PLACES=94, PETRI_TRANSITIONS=155} [2023-08-27 09:45:58,932 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2023-08-27 09:45:58,932 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 155 transitions, 1164 flow [2023-08-27 09:45:58,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.25) internal successors, (1182), 24 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:58,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:58,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:58,944 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 09:45:59,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:45:59,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:59,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1231024006, now seen corresponding path program 1 times [2023-08-27 09:45:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:59,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100603457] [2023-08-27 09:45:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100603457] [2023-08-27 09:45:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100603457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:45:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171990414] [2023-08-27 09:45:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:59,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:45:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:45:59,225 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 09:45:59,228 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 09:45:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:59,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 09:45:59,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:45:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:59,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:45:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171990414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:45:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:45:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 09:45:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242353526] [2023-08-27 09:45:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:45:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:45:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:45:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:45:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:45:59,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 274 [2023-08-27 09:45:59,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 155 transitions, 1164 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:59,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:45:59,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 274 [2023-08-27 09:45:59,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:45:59,520 INFO L124 PetriNetUnfolderBase]: 210/604 cut-off events. [2023-08-27 09:45:59,521 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-08-27 09:45:59,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 604 events. 210/604 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2769 event pairs, 24 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 2381. Up to 537 conditions per place. [2023-08-27 09:45:59,526 INFO L140 encePairwiseOnDemand]: 270/274 looper letters, 147 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2023-08-27 09:45:59,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 150 transitions, 1402 flow [2023-08-27 09:45:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:45:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:45:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2023-08-27 09:45:59,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005474452554745 [2023-08-27 09:45:59,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2023-08-27 09:45:59,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2023-08-27 09:45:59,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:45:59,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2023-08-27 09:45:59,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:59,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:59,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:59,531 INFO L175 Difference]: Start difference. First operand has 94 places, 155 transitions, 1164 flow. Second operand 4 states and 439 transitions. [2023-08-27 09:45:59,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 150 transitions, 1402 flow [2023-08-27 09:45:59,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1262 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-08-27 09:45:59,545 INFO L231 Difference]: Finished difference. Result has 84 places, 147 transitions, 956 flow [2023-08-27 09:45:59,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=956, PETRI_PLACES=84, PETRI_TRANSITIONS=147} [2023-08-27 09:45:59,547 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2023-08-27 09:45:59,547 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 147 transitions, 956 flow [2023-08-27 09:45:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:45:59,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:45:59,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:45:59,561 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 09:45:59,756 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,SelfDestructingSolverStorable7 [2023-08-27 09:45:59,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:45:59,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:45:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1231024034, now seen corresponding path program 1 times [2023-08-27 09:45:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:45:59,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137312734] [2023-08-27 09:45:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:45:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:59,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:45:59,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137312734] [2023-08-27 09:45:59,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137312734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:45:59,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140408628] [2023-08-27 09:45:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:45:59,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:45:59,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:45:59,822 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 09:45:59,840 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 09:45:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:45:59,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 09:45:59,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:45:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:45:59,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:46:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:46:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140408628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:46:00,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:46:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 09:46:00,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643612839] [2023-08-27 09:46:00,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:46:00,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:46:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:46:00,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:46:00,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 274 [2023-08-27 09:46:00,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 147 transitions, 956 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:00,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 274 [2023-08-27 09:46:00,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:00,165 INFO L124 PetriNetUnfolderBase]: 137/402 cut-off events. [2023-08-27 09:46:00,165 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-08-27 09:46:00,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 402 events. 137/402 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1485 event pairs, 21 based on Foata normal form. 5/372 useless extension candidates. Maximal degree in co-relation 1430. Up to 235 conditions per place. [2023-08-27 09:46:00,168 INFO L140 encePairwiseOnDemand]: 270/274 looper letters, 113 selfloop transitions, 3 changer transitions 1/118 dead transitions. [2023-08-27 09:46:00,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 949 flow [2023-08-27 09:46:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:46:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:46:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2023-08-27 09:46:00,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051094890510949 [2023-08-27 09:46:00,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2023-08-27 09:46:00,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2023-08-27 09:46:00,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:00,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2023-08-27 09:46:00,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,175 INFO L175 Difference]: Start difference. First operand has 84 places, 147 transitions, 956 flow. Second operand 5 states and 555 transitions. [2023-08-27 09:46:00,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 949 flow [2023-08-27 09:46:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 938 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 09:46:00,179 INFO L231 Difference]: Finished difference. Result has 73 places, 103 transitions, 646 flow [2023-08-27 09:46:00,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=646, PETRI_PLACES=73, PETRI_TRANSITIONS=103} [2023-08-27 09:46:00,180 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-08-27 09:46:00,180 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 103 transitions, 646 flow [2023-08-27 09:46:00,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:00,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:00,189 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 09:46:00,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:46:00,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:46:00,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1290506845, now seen corresponding path program 1 times [2023-08-27 09:46:00,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:00,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597117531] [2023-08-27 09:46:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 09:46:00,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597117531] [2023-08-27 09:46:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597117531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:00,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:46:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859005280] [2023-08-27 09:46:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:00,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:46:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:46:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:46:00,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 274 [2023-08-27 09:46:00,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 103 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:00,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 274 [2023-08-27 09:46:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:00,539 INFO L124 PetriNetUnfolderBase]: 131/369 cut-off events. [2023-08-27 09:46:00,539 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-08-27 09:46:00,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 369 events. 131/369 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1264 event pairs, 15 based on Foata normal form. 14/353 useless extension candidates. Maximal degree in co-relation 1268. Up to 324 conditions per place. [2023-08-27 09:46:00,541 INFO L140 encePairwiseOnDemand]: 272/274 looper letters, 96 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-27 09:46:00,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 798 flow [2023-08-27 09:46:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:46:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:46:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-27 09:46:00,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41119221411192214 [2023-08-27 09:46:00,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-27 09:46:00,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-27 09:46:00,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:00,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-27 09:46:00,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,546 INFO L175 Difference]: Start difference. First operand has 73 places, 103 transitions, 646 flow. Second operand 3 states and 338 transitions. [2023-08-27 09:46:00,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 798 flow [2023-08-27 09:46:00,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 787 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:46:00,551 INFO L231 Difference]: Finished difference. Result has 69 places, 97 transitions, 589 flow [2023-08-27 09:46:00,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=589, PETRI_PLACES=69, PETRI_TRANSITIONS=97} [2023-08-27 09:46:00,552 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2023-08-27 09:46:00,552 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 97 transitions, 589 flow [2023-08-27 09:46:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:00,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:00,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:46:00,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 09:46:00,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:00,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1290506847, now seen corresponding path program 1 times [2023-08-27 09:46:00,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:00,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8486914] [2023-08-27 09:46:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:00,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:46:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8486914] [2023-08-27 09:46:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8486914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:46:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363153512] [2023-08-27 09:46:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:00,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:46:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:46:00,685 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 09:46:00,693 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 09:46:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:00,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 09:46:00,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:46:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:46:00,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:46:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:46:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363153512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:46:00,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:46:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 09:46:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303686880] [2023-08-27 09:46:00,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:46:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 09:46:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 09:46:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-27 09:46:00,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 274 [2023-08-27 09:46:00,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 97 transitions, 589 flow. Second operand has 13 states, 13 states have (on average 84.07692307692308) internal successors, (1093), 13 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:00,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 274 [2023-08-27 09:46:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:01,271 INFO L124 PetriNetUnfolderBase]: 173/460 cut-off events. [2023-08-27 09:46:01,271 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2023-08-27 09:46:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 460 events. 173/460 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1739 event pairs, 20 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1549. Up to 160 conditions per place. [2023-08-27 09:46:01,273 INFO L140 encePairwiseOnDemand]: 265/274 looper letters, 0 selfloop transitions, 0 changer transitions 148/148 dead transitions. [2023-08-27 09:46:01,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1132 flow [2023-08-27 09:46:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 09:46:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 09:46:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 948 transitions. [2023-08-27 09:46:01,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31453218314532183 [2023-08-27 09:46:01,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 948 transitions. [2023-08-27 09:46:01,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 948 transitions. [2023-08-27 09:46:01,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:01,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 948 transitions. [2023-08-27 09:46:01,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.18181818181819) internal successors, (948), 11 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:01,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:01,283 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:01,283 INFO L175 Difference]: Start difference. First operand has 69 places, 97 transitions, 589 flow. Second operand 11 states and 948 transitions. [2023-08-27 09:46:01,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1132 flow [2023-08-27 09:46:01,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 148 transitions, 1131 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:46:01,287 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-27 09:46:01,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-27 09:46:01,288 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-08-27 09:46:01,288 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-27 09:46:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 84.07692307692308) internal successors, (1093), 13 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:01,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONASSERT (16 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 09:46:01,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONASSERT (2 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 09:46:01,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 09:46:01,299 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 09:46:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:46:01,498 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:01,500 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 09:46:01,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,514 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-27 09:46:01,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:46:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-27 09:46:01,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:46:01,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-27 09:46:01,524 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-27 09:46:01,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:46:01,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-27 09:46:01,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-27 09:46:07,082 INFO L134 LiptonReduction]: Checked pairs total: 3013 [2023-08-27 09:46:07,082 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-27 09:46:07,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 09:46:07,083 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;@42c6d619, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:46:07,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 09:46:07,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:46:07,085 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-27 09:46:07,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:46:07,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:07,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 09:46:07,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 09:46:07,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1093256204, now seen corresponding path program 1 times [2023-08-27 09:46:07,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:07,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591346294] [2023-08-27 09:46:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:46:07,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:46:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:46:07,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:46:07,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:46:07,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 09:46:07,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:46:07,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:46:07,123 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 09:46:07,124 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 09:46:07,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 09:46:07,170 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:46:07,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,197 INFO L124 PetriNetUnfolderBase]: 21/255 cut-off events. [2023-08-27 09:46:07,197 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:46:07,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 255 events. 21/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 551 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-27 09:46:07,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,201 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:46:07,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 478 flow [2023-08-27 09:46:07,226 INFO L124 PetriNetUnfolderBase]: 21/255 cut-off events. [2023-08-27 09:46:07,226 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:46:07,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 255 events. 21/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 551 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-27 09:46:07,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 24500 [2023-08-27 09:46:13,011 INFO L134 LiptonReduction]: Checked pairs total: 64697 [2023-08-27 09:46:13,011 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-27 09:46:13,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:46:13,013 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;@42c6d619, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:46:13,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-27 09:46:13,016 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:46:13,017 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-08-27 09:46:13,017 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:46:13,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:13,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:13,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:13,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1813259146, now seen corresponding path program 1 times [2023-08-27 09:46:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98029166] [2023-08-27 09:46:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:13,052 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 09:46:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:13,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98029166] [2023-08-27 09:46:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98029166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:13,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:46:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782240415] [2023-08-27 09:46:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:46:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:46:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:46:13,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 414 [2023-08-27 09:46:13,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:13,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 414 [2023-08-27 09:46:13,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:13,629 INFO L124 PetriNetUnfolderBase]: 2090/3878 cut-off events. [2023-08-27 09:46:13,629 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-27 09:46:13,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 3878 events. 2090/3878 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25911 event pairs, 765 based on Foata normal form. 0/2707 useless extension candidates. Maximal degree in co-relation 6634. Up to 2624 conditions per place. [2023-08-27 09:46:13,661 INFO L140 encePairwiseOnDemand]: 399/414 looper letters, 109 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2023-08-27 09:46:13,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 153 transitions, 562 flow [2023-08-27 09:46:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:46:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:46:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1100 transitions. [2023-08-27 09:46:13,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2023-08-27 09:46:13,665 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1100 transitions. [2023-08-27 09:46:13,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1100 transitions. [2023-08-27 09:46:13,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:13,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1100 transitions. [2023-08-27 09:46:13,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,672 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 208 flow. Second operand 5 states and 1100 transitions. [2023-08-27 09:46:13,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 153 transitions, 562 flow [2023-08-27 09:46:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 153 transitions, 560 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 09:46:13,675 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-27 09:46:13,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2023-08-27 09:46:13,676 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2023-08-27 09:46:13,676 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-27 09:46:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:13,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:13,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:46:13,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:13,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -562551483, now seen corresponding path program 1 times [2023-08-27 09:46:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:13,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24180749] [2023-08-27 09:46:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:13,734 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 09:46:13,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:13,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24180749] [2023-08-27 09:46:13,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24180749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:13,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:13,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:46:13,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093491984] [2023-08-27 09:46:13,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:46:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:46:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:46:13,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 414 [2023-08-27 09:46:13,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:13,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:13,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 414 [2023-08-27 09:46:13,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:14,739 INFO L124 PetriNetUnfolderBase]: 5775/9455 cut-off events. [2023-08-27 09:46:14,740 INFO L125 PetriNetUnfolderBase]: For 1959/1969 co-relation queries the response was YES. [2023-08-27 09:46:14,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20343 conditions, 9455 events. 5775/9455 cut-off events. For 1959/1969 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 65148 event pairs, 1749 based on Foata normal form. 10/7171 useless extension candidates. Maximal degree in co-relation 15408. Up to 7809 conditions per place. [2023-08-27 09:46:14,815 INFO L140 encePairwiseOnDemand]: 397/414 looper letters, 122 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2023-08-27 09:46:14,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 138 transitions, 625 flow [2023-08-27 09:46:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:46:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:46:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-27 09:46:14,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233494363929146 [2023-08-27 09:46:14,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-27 09:46:14,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-27 09:46:14,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:14,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-27 09:46:14,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:14,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:14,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:14,821 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 650 transitions. [2023-08-27 09:46:14,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 138 transitions, 625 flow [2023-08-27 09:46:14,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 625 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:46:14,824 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 311 flow [2023-08-27 09:46:14,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2023-08-27 09:46:14,825 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2023-08-27 09:46:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 311 flow [2023-08-27 09:46:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:14,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:14,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:46:14,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:14,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1603448715, now seen corresponding path program 1 times [2023-08-27 09:46:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12621941] [2023-08-27 09:46:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:14,863 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 09:46:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12621941] [2023-08-27 09:46:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12621941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:14,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:14,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:46:14,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904940094] [2023-08-27 09:46:14,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:14,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:46:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:14,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:46:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:46:14,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 414 [2023-08-27 09:46:14,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:14,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:14,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 414 [2023-08-27 09:46:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:15,419 INFO L124 PetriNetUnfolderBase]: 2218/4708 cut-off events. [2023-08-27 09:46:15,419 INFO L125 PetriNetUnfolderBase]: For 912/922 co-relation queries the response was YES. [2023-08-27 09:46:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9495 conditions, 4708 events. 2218/4708 cut-off events. For 912/922 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 36063 event pairs, 1551 based on Foata normal form. 10/3796 useless extension candidates. Maximal degree in co-relation 6423. Up to 3148 conditions per place. [2023-08-27 09:46:15,455 INFO L140 encePairwiseOnDemand]: 408/414 looper letters, 75 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-27 09:46:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 534 flow [2023-08-27 09:46:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:46:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:46:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-27 09:46:15,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458937198067633 [2023-08-27 09:46:15,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-27 09:46:15,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-27 09:46:15,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:15,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-27 09:46:15,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:15,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:15,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:15,467 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 311 flow. Second operand 3 states and 678 transitions. [2023-08-27 09:46:15,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 534 flow [2023-08-27 09:46:15,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:46:15,470 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 316 flow [2023-08-27 09:46:15,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2023-08-27 09:46:15,472 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2023-08-27 09:46:15,472 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 316 flow [2023-08-27 09:46:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:15,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:15,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:46:15,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:15,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1603448688, now seen corresponding path program 1 times [2023-08-27 09:46:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025346479] [2023-08-27 09:46:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:15,520 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 09:46:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025346479] [2023-08-27 09:46:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025346479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:15,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:15,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:46:15,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207345958] [2023-08-27 09:46:15,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:15,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:46:15,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:46:15,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:46:15,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 414 [2023-08-27 09:46:15,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:15,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:15,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 414 [2023-08-27 09:46:15,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:16,099 INFO L124 PetriNetUnfolderBase]: 2143/4555 cut-off events. [2023-08-27 09:46:16,099 INFO L125 PetriNetUnfolderBase]: For 1021/1031 co-relation queries the response was YES. [2023-08-27 09:46:16,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9376 conditions, 4555 events. 2143/4555 cut-off events. For 1021/1031 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 34668 event pairs, 1486 based on Foata normal form. 10/3707 useless extension candidates. Maximal degree in co-relation 6325. Up to 3027 conditions per place. [2023-08-27 09:46:16,127 INFO L140 encePairwiseOnDemand]: 409/414 looper letters, 75 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-08-27 09:46:16,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 535 flow [2023-08-27 09:46:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:46:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:46:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-08-27 09:46:16,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450885668276972 [2023-08-27 09:46:16,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-08-27 09:46:16,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-08-27 09:46:16,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:16,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-08-27 09:46:16,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,133 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 316 flow. Second operand 3 states and 677 transitions. [2023-08-27 09:46:16,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 535 flow [2023-08-27 09:46:16,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:46:16,136 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 312 flow [2023-08-27 09:46:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-08-27 09:46:16,138 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2023-08-27 09:46:16,138 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 312 flow [2023-08-27 09:46:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:16,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:16,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 09:46:16,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:16,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1832699895, now seen corresponding path program 1 times [2023-08-27 09:46:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:16,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132556690] [2023-08-27 09:46:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:16,175 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 09:46:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132556690] [2023-08-27 09:46:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132556690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:46:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960013319] [2023-08-27 09:46:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:46:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:46:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:46:16,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 414 [2023-08-27 09:46:16,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:16,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 414 [2023-08-27 09:46:16,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:16,725 INFO L124 PetriNetUnfolderBase]: 2054/4622 cut-off events. [2023-08-27 09:46:16,726 INFO L125 PetriNetUnfolderBase]: For 994/1004 co-relation queries the response was YES. [2023-08-27 09:46:16,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 4622 events. 2054/4622 cut-off events. For 994/1004 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 37560 event pairs, 753 based on Foata normal form. 10/3917 useless extension candidates. Maximal degree in co-relation 6270. Up to 1987 conditions per place. [2023-08-27 09:46:16,752 INFO L140 encePairwiseOnDemand]: 412/414 looper letters, 78 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2023-08-27 09:46:16,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 126 transitions, 535 flow [2023-08-27 09:46:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:46:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:46:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-27 09:46:16,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209339774557166 [2023-08-27 09:46:16,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-27 09:46:16,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-27 09:46:16,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:16,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-27 09:46:16,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,758 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 312 flow. Second operand 3 states and 647 transitions. [2023-08-27 09:46:16,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 126 transitions, 535 flow [2023-08-27 09:46:16,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:46:16,762 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 309 flow [2023-08-27 09:46:16,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-08-27 09:46:16,762 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2023-08-27 09:46:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 309 flow [2023-08-27 09:46:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:16,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:16,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 09:46:16,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:16,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1832699894, now seen corresponding path program 1 times [2023-08-27 09:46:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774649421] [2023-08-27 09:46:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:16,844 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 09:46:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774649421] [2023-08-27 09:46:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774649421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:46:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471591064] [2023-08-27 09:46:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:46:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:46:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:46:16,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 414 [2023-08-27 09:46:16,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 309 flow. Second operand has 6 states, 6 states have (on average 153.5) internal successors, (921), 6 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:16,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:16,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 414 [2023-08-27 09:46:16,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:18,788 INFO L124 PetriNetUnfolderBase]: 8855/14315 cut-off events. [2023-08-27 09:46:18,788 INFO L125 PetriNetUnfolderBase]: For 3297/3307 co-relation queries the response was YES. [2023-08-27 09:46:18,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 14315 events. 8855/14315 cut-off events. For 3297/3307 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 102600 event pairs, 1859 based on Foata normal form. 10/12518 useless extension candidates. Maximal degree in co-relation 27296. Up to 6014 conditions per place. [2023-08-27 09:46:18,894 INFO L140 encePairwiseOnDemand]: 403/414 looper letters, 342 selfloop transitions, 17 changer transitions 0/372 dead transitions. [2023-08-27 09:46:18,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 372 transitions, 1763 flow [2023-08-27 09:46:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:46:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:46:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1705 transitions. [2023-08-27 09:46:18,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575952764358561 [2023-08-27 09:46:18,897 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1705 transitions. [2023-08-27 09:46:18,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1705 transitions. [2023-08-27 09:46:18,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:18,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1705 transitions. [2023-08-27 09:46:18,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:18,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:18,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:18,907 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 309 flow. Second operand 9 states and 1705 transitions. [2023-08-27 09:46:18,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 372 transitions, 1763 flow [2023-08-27 09:46:18,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 372 transitions, 1763 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:46:18,913 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 410 flow [2023-08-27 09:46:18,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=410, PETRI_PLACES=110, PETRI_TRANSITIONS=111} [2023-08-27 09:46:18,914 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 21 predicate places. [2023-08-27 09:46:18,914 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 410 flow [2023-08-27 09:46:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.5) internal successors, (921), 6 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:18,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:18,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 09:46:18,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:18,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1832699574, now seen corresponding path program 1 times [2023-08-27 09:46:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066851515] [2023-08-27 09:46:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:19,010 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 09:46:19,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066851515] [2023-08-27 09:46:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066851515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:46:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230053172] [2023-08-27 09:46:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:19,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:46:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:46:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:46:19,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 414 [2023-08-27 09:46:19,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:19,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:19,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 414 [2023-08-27 09:46:19,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:20,681 INFO L124 PetriNetUnfolderBase]: 8781/14249 cut-off events. [2023-08-27 09:46:20,681 INFO L125 PetriNetUnfolderBase]: For 4917/4927 co-relation queries the response was YES. [2023-08-27 09:46:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34486 conditions, 14249 events. 8781/14249 cut-off events. For 4917/4927 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 101386 event pairs, 3071 based on Foata normal form. 10/12685 useless extension candidates. Maximal degree in co-relation 29084. Up to 9353 conditions per place. [2023-08-27 09:46:20,784 INFO L140 encePairwiseOnDemand]: 406/414 looper letters, 239 selfloop transitions, 9 changer transitions 0/261 dead transitions. [2023-08-27 09:46:20,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 261 transitions, 1319 flow [2023-08-27 09:46:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:46:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:46:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1217 transitions. [2023-08-27 09:46:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48993558776167473 [2023-08-27 09:46:20,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1217 transitions. [2023-08-27 09:46:20,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1217 transitions. [2023-08-27 09:46:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1217 transitions. [2023-08-27 09:46:20,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:20,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:20,792 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:20,792 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 410 flow. Second operand 6 states and 1217 transitions. [2023-08-27 09:46:20,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 261 transitions, 1319 flow [2023-08-27 09:46:20,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 261 transitions, 1314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:46:20,813 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 418 flow [2023-08-27 09:46:20,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2023-08-27 09:46:20,813 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 25 predicate places. [2023-08-27 09:46:20,813 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 418 flow [2023-08-27 09:46:20,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:20,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:20,814 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 09:46:20,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:20,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash -716262928, now seen corresponding path program 1 times [2023-08-27 09:46:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:20,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393884916] [2023-08-27 09:46:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:46:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:20,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393884916] [2023-08-27 09:46:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393884916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:46:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051904423] [2023-08-27 09:46:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:46:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:46:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:46:20,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 414 [2023-08-27 09:46:20,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:20,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:20,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 414 [2023-08-27 09:46:20,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:23,060 INFO L124 PetriNetUnfolderBase]: 12531/20263 cut-off events. [2023-08-27 09:46:23,060 INFO L125 PetriNetUnfolderBase]: For 7443/7453 co-relation queries the response was YES. [2023-08-27 09:46:23,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48969 conditions, 20263 events. 12531/20263 cut-off events. For 7443/7453 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 150183 event pairs, 4066 based on Foata normal form. 10/17929 useless extension candidates. Maximal degree in co-relation 42249. Up to 12685 conditions per place. [2023-08-27 09:46:23,307 INFO L140 encePairwiseOnDemand]: 404/414 looper letters, 255 selfloop transitions, 10 changer transitions 0/278 dead transitions. [2023-08-27 09:46:23,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 278 transitions, 1552 flow [2023-08-27 09:46:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:46:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:46:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1212 transitions. [2023-08-27 09:46:23,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792270531400966 [2023-08-27 09:46:23,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1212 transitions. [2023-08-27 09:46:23,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1212 transitions. [2023-08-27 09:46:23,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:23,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1212 transitions. [2023-08-27 09:46:23,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:23,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:23,319 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:23,319 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 418 flow. Second operand 6 states and 1212 transitions. [2023-08-27 09:46:23,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 278 transitions, 1552 flow [2023-08-27 09:46:23,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 278 transitions, 1518 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 09:46:23,338 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 460 flow [2023-08-27 09:46:23,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2023-08-27 09:46:23,339 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2023-08-27 09:46:23,339 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 460 flow [2023-08-27 09:46:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:23,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:23,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 09:46:23,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:23,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -729312815, now seen corresponding path program 1 times [2023-08-27 09:46:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167931928] [2023-08-27 09:46:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:46:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167931928] [2023-08-27 09:46:23,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167931928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:23,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:23,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:46:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823543028] [2023-08-27 09:46:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:23,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:46:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:46:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:46:23,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 414 [2023-08-27 09:46:23,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:23,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:23,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 414 [2023-08-27 09:46:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:25,958 INFO L124 PetriNetUnfolderBase]: 12129/19609 cut-off events. [2023-08-27 09:46:25,958 INFO L125 PetriNetUnfolderBase]: For 7655/7665 co-relation queries the response was YES. [2023-08-27 09:46:26,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48866 conditions, 19609 events. 12129/19609 cut-off events. For 7655/7665 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 146131 event pairs, 3206 based on Foata normal form. 10/17555 useless extension candidates. Maximal degree in co-relation 42108. Up to 12685 conditions per place. [2023-08-27 09:46:26,149 INFO L140 encePairwiseOnDemand]: 404/414 looper letters, 299 selfloop transitions, 11 changer transitions 0/323 dead transitions. [2023-08-27 09:46:26,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 323 transitions, 1834 flow [2023-08-27 09:46:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:46:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:46:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1319 transitions. [2023-08-27 09:46:26,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551414768806073 [2023-08-27 09:46:26,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1319 transitions. [2023-08-27 09:46:26,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1319 transitions. [2023-08-27 09:46:26,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:26,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1319 transitions. [2023-08-27 09:46:26,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:26,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 414.0) internal successors, (3312), 8 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:26,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 414.0) internal successors, (3312), 8 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:26,164 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 460 flow. Second operand 7 states and 1319 transitions. [2023-08-27 09:46:26,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 323 transitions, 1834 flow [2023-08-27 09:46:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 323 transitions, 1831 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:46:26,254 INFO L231 Difference]: Finished difference. Result has 123 places, 116 transitions, 489 flow [2023-08-27 09:46:26,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=123, PETRI_TRANSITIONS=116} [2023-08-27 09:46:26,254 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2023-08-27 09:46:26,255 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 489 flow [2023-08-27 09:46:26,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:26,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:26,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 09:46:26,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:26,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1253109443, now seen corresponding path program 1 times [2023-08-27 09:46:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997280731] [2023-08-27 09:46:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:26,607 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 09:46:26,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997280731] [2023-08-27 09:46:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997280731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:46:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:46:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:46:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717287953] [2023-08-27 09:46:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:46:26,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:46:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:46:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:46:26,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 414 [2023-08-27 09:46:26,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 164.88888888888889) internal successors, (1484), 9 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:26,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:26,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 414 [2023-08-27 09:46:26,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:29,504 INFO L124 PetriNetUnfolderBase]: 11297/22611 cut-off events. [2023-08-27 09:46:29,505 INFO L125 PetriNetUnfolderBase]: For 8757/8769 co-relation queries the response was YES. [2023-08-27 09:46:29,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52444 conditions, 22611 events. 11297/22611 cut-off events. For 8757/8769 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 206280 event pairs, 1980 based on Foata normal form. 12/19781 useless extension candidates. Maximal degree in co-relation 44993. Up to 7121 conditions per place. [2023-08-27 09:46:29,669 INFO L140 encePairwiseOnDemand]: 394/414 looper letters, 235 selfloop transitions, 69 changer transitions 0/355 dead transitions. [2023-08-27 09:46:29,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 355 transitions, 1978 flow [2023-08-27 09:46:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 09:46:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 09:46:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1892 transitions. [2023-08-27 09:46:29,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4570048309178744 [2023-08-27 09:46:29,674 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1892 transitions. [2023-08-27 09:46:29,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1892 transitions. [2023-08-27 09:46:29,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:46:29,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1892 transitions. [2023-08-27 09:46:29,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.2) internal successors, (1892), 10 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:29,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 414.0) internal successors, (4554), 11 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:29,682 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 414.0) internal successors, (4554), 11 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:29,682 INFO L175 Difference]: Start difference. First operand has 123 places, 116 transitions, 489 flow. Second operand 10 states and 1892 transitions. [2023-08-27 09:46:29,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 355 transitions, 1978 flow [2023-08-27 09:46:29,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 355 transitions, 1916 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 09:46:29,710 INFO L231 Difference]: Finished difference. Result has 133 places, 182 transitions, 953 flow [2023-08-27 09:46:29,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=953, PETRI_PLACES=133, PETRI_TRANSITIONS=182} [2023-08-27 09:46:29,711 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 44 predicate places. [2023-08-27 09:46:29,711 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 182 transitions, 953 flow [2023-08-27 09:46:29,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.88888888888889) internal successors, (1484), 9 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:29,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:46:29,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:46:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 09:46:29,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:46:29,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:46:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash 171160867, now seen corresponding path program 1 times [2023-08-27 09:46:29,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:46:29,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902961089] [2023-08-27 09:46:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:46:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:30,064 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 09:46:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:46:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902961089] [2023-08-27 09:46:30,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902961089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:46:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401422673] [2023-08-27 09:46:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:46:30,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:46:30,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:46:30,066 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 09:46:30,069 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 09:46:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:46:30,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-27 09:46:30,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:46:30,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 09:46:30,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:46:30,464 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 14 treesize of output 16 [2023-08-27 09:46:30,627 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 09:46:30,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2023-08-27 09:46:30,925 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 09:46:30,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2023-08-27 09:46:31,015 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:46:31,015 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 21 treesize of output 17 [2023-08-27 09:46:31,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-27 09:46:31,110 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 14 treesize of output 16 [2023-08-27 09:46:31,120 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 15 treesize of output 17 [2023-08-27 09:46:31,163 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 09:46:31,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:46:31,203 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-27 09:46:31,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 66 [2023-08-27 09:46:31,229 INFO L322 Elim1Store]: treesize reduction 22, result has 45.0 percent of original size [2023-08-27 09:46:31,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 61 [2023-08-27 09:46:31,255 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:46:31,257 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2023-08-27 09:46:31,319 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 192 treesize of output 188 [2023-08-27 09:46:31,351 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 6 treesize of output 4 [2023-08-27 09:46:31,366 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 6 treesize of output 4 [2023-08-27 09:46:31,374 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 6 treesize of output 4 [2023-08-27 09:46:31,381 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 6 treesize of output 4 [2023-08-27 09:46:31,899 WARN L839 $PredicateComparison]: unable to prove that (and (or (not (= c_~next_alloc_idx~0 0)) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int) (v_ArrVal_635 (Array Int Int)) (|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (not (= (+ (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635) |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0))))) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (forall ((v_ArrVal_635 (Array Int Int))) (not (= (+ (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635) |c_~#top~0.base|) 0) 1) 0))))) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (forall ((v_ArrVal_635 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635))) (or (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select .cse0 |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0))) (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store .cse0 |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))))))) is different from false [2023-08-27 09:46:31,994 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:46:31,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2023-08-27 09:46:32,004 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:46:32,005 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 37 treesize of output 37 [2023-08-27 09:46:32,010 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 24 treesize of output 22 [2023-08-27 09:46:32,040 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:46:32,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2023-08-27 09:46:32,045 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 09:46:32,056 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 09:46:32,056 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 58 treesize of output 49 [2023-08-27 09:46:32,064 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 24 treesize of output 22 [2023-08-27 09:46:32,084 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:46:32,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2023-08-27 09:46:32,099 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 09:46:32,100 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 37 treesize of output 32 [2023-08-27 09:46:32,106 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 24 treesize of output 22 [2023-08-27 09:46:32,218 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 09:46:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401422673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:46:32,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:46:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 26 [2023-08-27 09:46:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162452125] [2023-08-27 09:46:32,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:46:32,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 09:46:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:46:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 09:46:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=587, Unknown=12, NotChecked=50, Total=756 [2023-08-27 09:46:32,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 414 [2023-08-27 09:46:32,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 182 transitions, 953 flow. Second operand has 28 states, 28 states have (on average 123.89285714285714) internal successors, (3469), 28 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:46:32,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:46:32,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 414 [2023-08-27 09:46:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:46:35,131 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= c_~next_alloc_idx~0 0))) (.cse1 (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select |c_#memory_int| |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0))))) (and (not (= |c_~#m~0.base| |c_~#top~0.base|)) (or .cse0 (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int) (v_ArrVal_635 (Array Int Int)) (|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (not (= (+ (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635) |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0))))) (= |c_~#top~0.offset| 0) (or (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0)) .cse1) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (forall ((v_ArrVal_635 (Array Int Int))) (not (= (+ (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635) |c_~#top~0.base|) 0) 1) 0))))) .cse0 (not (= (+ (select (select |c_#memory_int| |c_~#top~0.base|) 0) 1) 0)) (or .cse0 .cse1) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| Int)) (or (< |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| |c_~#m2~0.base|) (forall ((v_ArrVal_635 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_release_~m#1.base_24| v_ArrVal_635))) (or (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select .cse2 |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0))) (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store .cse2 |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0))))))) (< |c_~#top~0.base| |c_~#m2~0.base|))) is different from false [2023-08-27 09:46:38,052 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (not (= c_~next_alloc_idx~0 0))) (.cse1 (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select |c_#memory_int| |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0)))) (.cse0 (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (.cse3 (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select |c_#memory_int| |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset|) 1) 0)))) (.cse4 (select |c_#memory_int| |c_~#top~0.base|))) (and (= |c_~#top~0.offset| 0) (not (= |c_thr1Thread1of2ForFork0_push_~newTop~0#1| 0)) (or .cse0 .cse1) (or .cse2 .cse3) (not (= (+ (select .cse4 0) 1) 0)) (or .cse2 .cse1) (or .cse0 .cse3) (not (= (+ (select .cse4 |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset|) 1) 0)) (or (not (= |c_thr1Thread1of2ForFork0_push_~#casret~0#1.base| |c_~#top~0.base|)) (= |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset| |c_~#top~0.offset|)))) is different from false [2023-08-27 09:46:39,488 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0)) (not (= c_~next_alloc_idx~0 0)) (not (= |c_thr1Thread1of2ForFork0_push_~#casret~0#1.base| |c_~#top~0.base|)) (not (= |c_thr1Thread1of2ForFork0_index_malloc_~curr_alloc_idx~0#1| 0))) is different from false [2023-08-27 09:47:26,022 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (not (= c_~next_alloc_idx~0 0))) (.cse1 (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select |c_#memory_int| |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) 0) 1) 0)))) (.cse0 (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_~#m~0.base| v_ArrVal_637) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (.cse3 (forall ((|thr1Thread1of2ForFork0_push_~#casret~0#1.base| Int)) (not (= (+ (select (select |c_#memory_int| |thr1Thread1of2ForFork0_push_~#casret~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset|) 1) 0)))) (.cse4 (select |c_#memory_int| |c_~#top~0.base|))) (and (= |c_~#top~0.offset| 0) (not (= |c_thr1Thread1of2ForFork0_push_~newTop~0#1| 0)) (or .cse0 .cse1) (or .cse2 .cse3) (not (= (+ (select .cse4 0) 1) 0)) (or .cse2 .cse1) (or .cse0 .cse3) (not (= (+ (select .cse4 |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset|) 1) 0)) (or (not (= (select .cse4 |c_~#top~0.offset|) 0)) (= |c_thr1Thread1of2ForFork0_push_loop_~r~0#1| 0)) (or (not (= |c_thr1Thread1of2ForFork0_push_~#casret~0#1.base| |c_~#top~0.base|)) (= |c_thr1Thread1of2ForFork0_push_~#casret~0#1.offset| |c_~#top~0.offset|)))) is different from false [2023-08-27 09:47:43,517 INFO L124 PetriNetUnfolderBase]: 193875/315265 cut-off events. [2023-08-27 09:47:43,517 INFO L125 PetriNetUnfolderBase]: For 237456/237524 co-relation queries the response was YES. [2023-08-27 09:47:45,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939005 conditions, 315265 events. 193875/315265 cut-off events. For 237456/237524 co-relation queries the response was YES. Maximal size of possible extension queue 6113. Compared 3001683 event pairs, 20777 based on Foata normal form. 2276/298224 useless extension candidates. Maximal degree in co-relation 858520. Up to 77422 conditions per place. [2023-08-27 09:47:46,898 INFO L140 encePairwiseOnDemand]: 342/414 looper letters, 4526 selfloop transitions, 1525 changer transitions 0/6063 dead transitions. [2023-08-27 09:47:46,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 6063 transitions, 36670 flow [2023-08-27 09:47:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-08-27 09:47:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-08-27 09:47:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 20469 transitions. [2023-08-27 09:47:46,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38930731484651376 [2023-08-27 09:47:46,937 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 20469 transitions. [2023-08-27 09:47:46,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 20469 transitions. [2023-08-27 09:47:46,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:47:46,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 20469 transitions. [2023-08-27 09:47:46,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 161.17322834645668) internal successors, (20469), 127 states have internal predecessors, (20469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:47:47,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 414.0) internal successors, (52992), 128 states have internal predecessors, (52992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:47:47,053 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 414.0) internal successors, (52992), 128 states have internal predecessors, (52992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:47:47,053 INFO L175 Difference]: Start difference. First operand has 133 places, 182 transitions, 953 flow. Second operand 127 states and 20469 transitions. [2023-08-27 09:47:47,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 6063 transitions, 36670 flow [2023-08-27 09:47:58,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 6063 transitions, 36615 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-27 09:47:58,620 INFO L231 Difference]: Finished difference. Result has 349 places, 1894 transitions, 16739 flow [2023-08-27 09:47:58,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=16739, PETRI_PLACES=349, PETRI_TRANSITIONS=1894} [2023-08-27 09:47:58,621 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 260 predicate places. [2023-08-27 09:47:58,621 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 1894 transitions, 16739 flow [2023-08-27 09:47:58,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 123.89285714285714) internal successors, (3469), 28 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:47:58,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:47:58,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:47:58,631 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 09:47:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 09:47:58,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err10ASSERT_VIOLATIONASSERT === [thr1Err10ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-27 09:47:58,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:47:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 108497461, now seen corresponding path program 2 times [2023-08-27 09:47:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:47:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131207227] [2023-08-27 09:47:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:47:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:47:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:47:59,292 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 09:47:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:47:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131207227] [2023-08-27 09:47:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131207227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:47:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143651933] [2023-08-27 09:47:59,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:47:59,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:47:59,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:47:59,297 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 09:47:59,301 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 09:47:59,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:47:59,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:47:59,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-27 09:47:59,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:47:59,482 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:47:59,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 09:47:59,917 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-27 09:47:59,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-08-27 09:48:00,004 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 14 treesize of output 16 [2023-08-27 09:48:00,032 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 09:48:00,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:48:00,224 INFO L322 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2023-08-27 09:48:00,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 38 [2023-08-27 09:48:00,232 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:48:00,233 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 51 treesize of output 50 [2023-08-27 09:48:00,238 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 20 treesize of output 18 [2023-08-27 09:48:00,398 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 09:48:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143651933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:48:00,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:48:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 21 [2023-08-27 09:48:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922343530] [2023-08-27 09:48:00,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:48:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 09:48:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:48:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 09:48:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=425, Unknown=9, NotChecked=0, Total=506 [2023-08-27 09:48:00,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 414 [2023-08-27 09:48:00,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1894 transitions, 16739 flow. Second operand has 23 states, 23 states have (on average 112.52173913043478) internal successors, (2588), 23 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:48:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:48:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 414 [2023-08-27 09:48:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand