/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:27:13,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:27:13,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:27:13,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:27:13,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:27:13,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:27:13,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:27:13,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:27:13,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:27:13,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:27:13,313 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:27:13,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:27:13,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:27:13,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:27:13,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:27:13,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:27:13,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:27:13,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:27:13,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:27:13,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:27:13,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:27:13,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:27:13,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:27:13,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:27:13,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:27:13,318 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:27:13,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:27:13,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:27:13,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:27:13,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:27:13,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:27:13,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:27:13,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:27:13,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:27:13,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:27:13,320 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:27:13,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:27:13,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:27:13,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:27:13,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:27:13,649 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:27:13,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-27 02:27:14,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:27:15,119 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:27:15,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-27 02:27:15,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f621d5d/c8afa233337e4505990813c450b4258f/FLAG420ec9e9b [2023-08-27 02:27:15,159 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f621d5d/c8afa233337e4505990813c450b4258f [2023-08-27 02:27:15,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:27:15,165 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:27:15,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:27:15,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:27:15,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:27:15,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee7bee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15, skipping insertion in model container [2023-08-27 02:27:15,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,220 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:27:15,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:27:15,603 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:27:15,617 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-27 02:27:15,619 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-27 02:27:15,636 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-27 02:27:15,640 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-27 02:27:15,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:27:15,699 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:27:15,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15 WrapperNode [2023-08-27 02:27:15,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:27:15,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:27:15,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:27:15,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:27:15,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,736 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-08-27 02:27:15,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:27:15,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:27:15,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:27:15,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:27:15,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:27:15,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:27:15,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:27:15,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:27:15,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (1/1) ... [2023-08-27 02:27:15,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:27:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:15,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:27:15,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:27:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:27:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:27:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-27 02:27:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:27:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:27:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:27:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:27:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:27:15,823 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:27:15,929 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:27:15,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:27:16,158 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:27:16,165 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:27:16,165 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 02:27:16,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:27:16 BoogieIcfgContainer [2023-08-27 02:27:16,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:27:16,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:27:16,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:27:16,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:27:16,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:27:15" (1/3) ... [2023-08-27 02:27:16,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a94be34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:27:16, skipping insertion in model container [2023-08-27 02:27:16,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:27:15" (2/3) ... [2023-08-27 02:27:16,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a94be34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:27:16, skipping insertion in model container [2023-08-27 02:27:16,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:27:16" (3/3) ... [2023-08-27 02:27:16,176 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-08-27 02:27:16,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:27:16,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:27:16,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:27:16,319 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:27:16,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 318 flow [2023-08-27 02:27:16,437 INFO L124 PetriNetUnfolderBase]: 11/149 cut-off events. [2023-08-27 02:27:16,437 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:27:16,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 11/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-08-27 02:27:16,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 318 flow [2023-08-27 02:27:16,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 136 transitions, 284 flow [2023-08-27 02:27:16,454 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:27:16,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 136 transitions, 284 flow [2023-08-27 02:27:16,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 136 transitions, 284 flow [2023-08-27 02:27:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 136 transitions, 284 flow [2023-08-27 02:27:16,517 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-27 02:27:16,517 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:27:16,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-27 02:27:16,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-08-27 02:27:22,512 INFO L134 LiptonReduction]: Checked pairs total: 7564 [2023-08-27 02:27:22,512 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 02:27:22,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:27:22,546 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;@300d252, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:27:22,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:27:22,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:27:22,553 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-27 02:27:22,553 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:27:22,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:22,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:27:22,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:22,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash -663125611, now seen corresponding path program 1 times [2023-08-27 02:27:22,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:22,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673950397] [2023-08-27 02:27:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:22,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673950397] [2023-08-27 02:27:22,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673950397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:22,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:22,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075527302] [2023-08-27 02:27:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:22,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 02:27:22,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 02:27:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 02:27:22,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 264 [2023-08-27 02:27:22,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:22,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:22,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 264 [2023-08-27 02:27:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:22,977 INFO L124 PetriNetUnfolderBase]: 345/596 cut-off events. [2023-08-27 02:27:22,977 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 02:27:22,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 596 events. 345/596 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2614 event pairs, 261 based on Foata normal form. 24/421 useless extension candidates. Maximal degree in co-relation 1074. Up to 563 conditions per place. [2023-08-27 02:27:22,986 INFO L140 encePairwiseOnDemand]: 263/264 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-27 02:27:22,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 146 flow [2023-08-27 02:27:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 02:27:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 02:27:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-08-27 02:27:22,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890151515151515 [2023-08-27 02:27:22,999 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-08-27 02:27:22,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-08-27 02:27:23,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:23,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-08-27 02:27:23,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,010 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,011 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 88 flow. Second operand 2 states and 311 transitions. [2023-08-27 02:27:23,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 146 flow [2023-08-27 02:27:23,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:27:23,016 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-27 02:27:23,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-27 02:27:23,020 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-27 02:27:23,020 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-27 02:27:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:23,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:27:23,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:23,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 917851547, now seen corresponding path program 1 times [2023-08-27 02:27:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984398952] [2023-08-27 02:27:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:23,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:23,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984398952] [2023-08-27 02:27:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984398952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:23,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:23,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:23,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952686243] [2023-08-27 02:27:23,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:27:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:27:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:27:23,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 02:27:23,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:23,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 02:27:23,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:23,355 INFO L124 PetriNetUnfolderBase]: 753/1260 cut-off events. [2023-08-27 02:27:23,355 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:27:23,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1260 events. 753/1260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5818 event pairs, 86 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 2487. Up to 863 conditions per place. [2023-08-27 02:27:23,361 INFO L140 encePairwiseOnDemand]: 253/264 looper letters, 77 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2023-08-27 02:27:23,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 91 transitions, 369 flow [2023-08-27 02:27:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:27:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:27:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2023-08-27 02:27:23,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446969696969697 [2023-08-27 02:27:23,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2023-08-27 02:27:23,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2023-08-27 02:27:23,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:23,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2023-08-27 02:27:23,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,373 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 5 states and 719 transitions. [2023-08-27 02:27:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 91 transitions, 369 flow [2023-08-27 02:27:23,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 369 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:27:23,375 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 178 flow [2023-08-27 02:27:23,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-27 02:27:23,376 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-27 02:27:23,376 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 178 flow [2023-08-27 02:27:23,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:23,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:27:23,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:23,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1611368603, now seen corresponding path program 1 times [2023-08-27 02:27:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629830988] [2023-08-27 02:27:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629830988] [2023-08-27 02:27:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629830988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:23,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218500631] [2023-08-27 02:27:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:27:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:27:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:27:23,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 02:27:23,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:23,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 02:27:23,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:23,569 INFO L124 PetriNetUnfolderBase]: 551/1050 cut-off events. [2023-08-27 02:27:23,569 INFO L125 PetriNetUnfolderBase]: For 324/332 co-relation queries the response was YES. [2023-08-27 02:27:23,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 1050 events. 551/1050 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5392 event pairs, 186 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 2610. Up to 750 conditions per place. [2023-08-27 02:27:23,576 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 54 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-27 02:27:23,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 347 flow [2023-08-27 02:27:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:27:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:27:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-27 02:27:23,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2023-08-27 02:27:23,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-27 02:27:23,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-27 02:27:23,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:23,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-27 02:27:23,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,582 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 178 flow. Second operand 3 states and 453 transitions. [2023-08-27 02:27:23,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 347 flow [2023-08-27 02:27:23,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 347 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:27:23,585 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 213 flow [2023-08-27 02:27:23,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-27 02:27:23,586 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-27 02:27:23,586 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 213 flow [2023-08-27 02:27:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:23,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:27:23,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:23,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash 437237865, now seen corresponding path program 1 times [2023-08-27 02:27:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:23,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857537581] [2023-08-27 02:27:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857537581] [2023-08-27 02:27:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857537581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625931674] [2023-08-27 02:27:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:23,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:23,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:27:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:23,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:27:23,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:23,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:27:23,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625931674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:23,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:27:23,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-27 02:27:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916876154] [2023-08-27 02:27:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:23,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:27:23,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:27:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:27:23,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 02:27:23,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 02:27:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:24,136 INFO L124 PetriNetUnfolderBase]: 935/1580 cut-off events. [2023-08-27 02:27:24,136 INFO L125 PetriNetUnfolderBase]: For 741/741 co-relation queries the response was YES. [2023-08-27 02:27:24,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 1580 events. 935/1580 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6784 event pairs, 169 based on Foata normal form. 44/1282 useless extension candidates. Maximal degree in co-relation 4255. Up to 659 conditions per place. [2023-08-27 02:27:24,147 INFO L140 encePairwiseOnDemand]: 250/264 looper letters, 98 selfloop transitions, 32 changer transitions 3/135 dead transitions. [2023-08-27 02:27:24,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 135 transitions, 758 flow [2023-08-27 02:27:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:27:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:27:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1007 transitions. [2023-08-27 02:27:24,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449134199134199 [2023-08-27 02:27:24,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1007 transitions. [2023-08-27 02:27:24,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1007 transitions. [2023-08-27 02:27:24,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:24,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1007 transitions. [2023-08-27 02:27:24,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.85714285714286) internal successors, (1007), 7 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,158 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,158 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 213 flow. Second operand 7 states and 1007 transitions. [2023-08-27 02:27:24,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 135 transitions, 758 flow [2023-08-27 02:27:24,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 135 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:27:24,164 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 438 flow [2023-08-27 02:27:24,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2023-08-27 02:27:24,164 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2023-08-27 02:27:24,165 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 438 flow [2023-08-27 02:27:24,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:24,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:24,176 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 02:27:24,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:24,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:24,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash 472916021, now seen corresponding path program 1 times [2023-08-27 02:27:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:24,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163362294] [2023-08-27 02:27:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:24,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163362294] [2023-08-27 02:27:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163362294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:27:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319674492] [2023-08-27 02:27:24,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:24,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:27:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:27:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:27:24,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 264 [2023-08-27 02:27:24,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:24,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 264 [2023-08-27 02:27:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:24,615 INFO L124 PetriNetUnfolderBase]: 346/741 cut-off events. [2023-08-27 02:27:24,615 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2023-08-27 02:27:24,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 741 events. 346/741 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3453 event pairs, 102 based on Foata normal form. 52/725 useless extension candidates. Maximal degree in co-relation 2065. Up to 388 conditions per place. [2023-08-27 02:27:24,619 INFO L140 encePairwiseOnDemand]: 252/264 looper letters, 32 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2023-08-27 02:27:24,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 365 flow [2023-08-27 02:27:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:27:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:27:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-08-27 02:27:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2023-08-27 02:27:24,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-08-27 02:27:24,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-08-27 02:27:24,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:24,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-08-27 02:27:24,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,655 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 438 flow. Second operand 3 states and 411 transitions. [2023-08-27 02:27:24,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 365 flow [2023-08-27 02:27:24,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 332 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-27 02:27:24,664 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 244 flow [2023-08-27 02:27:24,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-27 02:27:24,665 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-08-27 02:27:24,665 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 244 flow [2023-08-27 02:27:24,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:24,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:27:24,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:24,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1658777371, now seen corresponding path program 1 times [2023-08-27 02:27:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774029076] [2023-08-27 02:27:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:24,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774029076] [2023-08-27 02:27:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774029076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:27:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297943834] [2023-08-27 02:27:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:24,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:27:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:27:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:27:24,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 02:27:24,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:24,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 02:27:24,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:24,941 INFO L124 PetriNetUnfolderBase]: 389/802 cut-off events. [2023-08-27 02:27:24,941 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-08-27 02:27:24,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 802 events. 389/802 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3608 event pairs, 79 based on Foata normal form. 12/770 useless extension candidates. Maximal degree in co-relation 2318. Up to 313 conditions per place. [2023-08-27 02:27:24,946 INFO L140 encePairwiseOnDemand]: 253/264 looper letters, 67 selfloop transitions, 12 changer transitions 3/84 dead transitions. [2023-08-27 02:27:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 518 flow [2023-08-27 02:27:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:27:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:27:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 829 transitions. [2023-08-27 02:27:24,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233585858585859 [2023-08-27 02:27:24,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 829 transitions. [2023-08-27 02:27:24,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 829 transitions. [2023-08-27 02:27:24,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:24,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 829 transitions. [2023-08-27 02:27:24,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,956 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,956 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 244 flow. Second operand 6 states and 829 transitions. [2023-08-27 02:27:24,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 518 flow [2023-08-27 02:27:24,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 484 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 02:27:24,961 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 271 flow [2023-08-27 02:27:24,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-27 02:27:24,966 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2023-08-27 02:27:24,966 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 271 flow [2023-08-27 02:27:24,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:24,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:24,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:24,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:27:24,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:24,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash -675772138, now seen corresponding path program 1 times [2023-08-27 02:27:24,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295637795] [2023-08-27 02:27:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:24,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295637795] [2023-08-27 02:27:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295637795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738884614] [2023-08-27 02:27:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:25,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:27:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:27:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:27:25,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 02:27:25,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:25,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 02:27:25,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:25,129 INFO L124 PetriNetUnfolderBase]: 334/745 cut-off events. [2023-08-27 02:27:25,129 INFO L125 PetriNetUnfolderBase]: For 614/618 co-relation queries the response was YES. [2023-08-27 02:27:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 745 events. 334/745 cut-off events. For 614/618 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3520 event pairs, 190 based on Foata normal form. 18/711 useless extension candidates. Maximal degree in co-relation 2114. Up to 498 conditions per place. [2023-08-27 02:27:25,134 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-27 02:27:25,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 445 flow [2023-08-27 02:27:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:27:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:27:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-27 02:27:25,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-08-27 02:27:25,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-27 02:27:25,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-27 02:27:25,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:25,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-27 02:27:25,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,142 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 271 flow. Second operand 3 states and 444 transitions. [2023-08-27 02:27:25,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 445 flow [2023-08-27 02:27:25,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 423 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 02:27:25,146 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 270 flow [2023-08-27 02:27:25,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-27 02:27:25,147 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2023-08-27 02:27:25,147 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 270 flow [2023-08-27 02:27:25,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:25,148 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 02:27:25,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:27:25,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:25,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -306404136, now seen corresponding path program 1 times [2023-08-27 02:27:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:25,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454471323] [2023-08-27 02:27:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:25,256 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 02:27:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454471323] [2023-08-27 02:27:25,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454471323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:25,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876175557] [2023-08-27 02:27:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:25,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:25,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:27:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:25,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:27:25,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:25,412 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 02:27:25,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:27:25,470 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 02:27:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876175557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:27:25,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:27:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 02:27:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401508949] [2023-08-27 02:27:25,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:27:25,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:27:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:27:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:27:25,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 02:27:25,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:25,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 02:27:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:25,705 INFO L124 PetriNetUnfolderBase]: 410/873 cut-off events. [2023-08-27 02:27:25,705 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-08-27 02:27:25,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 873 events. 410/873 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3973 event pairs, 71 based on Foata normal form. 46/875 useless extension candidates. Maximal degree in co-relation 2525. Up to 359 conditions per place. [2023-08-27 02:27:25,710 INFO L140 encePairwiseOnDemand]: 245/264 looper letters, 58 selfloop transitions, 26 changer transitions 3/89 dead transitions. [2023-08-27 02:27:25,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 557 flow [2023-08-27 02:27:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:27:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:27:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1161 transitions. [2023-08-27 02:27:25,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2023-08-27 02:27:25,714 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1161 transitions. [2023-08-27 02:27:25,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1161 transitions. [2023-08-27 02:27:25,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:25,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1161 transitions. [2023-08-27 02:27:25,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,720 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,721 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 270 flow. Second operand 9 states and 1161 transitions. [2023-08-27 02:27:25,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 557 flow [2023-08-27 02:27:25,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:27:25,724 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 323 flow [2023-08-27 02:27:25,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-27 02:27:25,725 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-08-27 02:27:25,725 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 323 flow [2023-08-27 02:27:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:25,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:25,726 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 02:27:25,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:25,931 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 02:27:25,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:25,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1415535615, now seen corresponding path program 1 times [2023-08-27 02:27:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770486490] [2023-08-27 02:27:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:26,039 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 02:27:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770486490] [2023-08-27 02:27:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770486490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:26,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:27:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298255131] [2023-08-27 02:27:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:27:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:27:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:27:26,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 02:27:26,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 02:27:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:26,310 INFO L124 PetriNetUnfolderBase]: 516/1085 cut-off events. [2023-08-27 02:27:26,311 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2023-08-27 02:27:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 1085 events. 516/1085 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5218 event pairs, 105 based on Foata normal form. 20/1037 useless extension candidates. Maximal degree in co-relation 3574. Up to 395 conditions per place. [2023-08-27 02:27:26,316 INFO L140 encePairwiseOnDemand]: 249/264 looper letters, 81 selfloop transitions, 18 changer transitions 3/104 dead transitions. [2023-08-27 02:27:26,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 732 flow [2023-08-27 02:27:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:27:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:27:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1177 transitions. [2023-08-27 02:27:26,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-27 02:27:26,320 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1177 transitions. [2023-08-27 02:27:26,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1177 transitions. [2023-08-27 02:27:26,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:26,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1177 transitions. [2023-08-27 02:27:26,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.77777777777777) internal successors, (1177), 9 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,327 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 323 flow. Second operand 9 states and 1177 transitions. [2023-08-27 02:27:26,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 732 flow [2023-08-27 02:27:26,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 659 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-27 02:27:26,332 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 378 flow [2023-08-27 02:27:26,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-27 02:27:26,333 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2023-08-27 02:27:26,333 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 378 flow [2023-08-27 02:27:26,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:26,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:27:26,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:26,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1184207826, now seen corresponding path program 1 times [2023-08-27 02:27:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:26,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388842563] [2023-08-27 02:27:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:26,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:26,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:26,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388842563] [2023-08-27 02:27:26,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388842563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:26,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163974372] [2023-08-27 02:27:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:27:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:27:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:27:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 02:27:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 02:27:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:26,502 INFO L124 PetriNetUnfolderBase]: 424/931 cut-off events. [2023-08-27 02:27:26,502 INFO L125 PetriNetUnfolderBase]: For 1067/1069 co-relation queries the response was YES. [2023-08-27 02:27:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 931 events. 424/931 cut-off events. For 1067/1069 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4452 event pairs, 190 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 2996. Up to 440 conditions per place. [2023-08-27 02:27:26,508 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 59 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-08-27 02:27:26,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 630 flow [2023-08-27 02:27:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:27:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:27:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-27 02:27:26,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5618686868686869 [2023-08-27 02:27:26,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-27 02:27:26,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-27 02:27:26,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:26,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-27 02:27:26,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,514 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 378 flow. Second operand 3 states and 445 transitions. [2023-08-27 02:27:26,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 630 flow [2023-08-27 02:27:26,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:27:26,519 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 369 flow [2023-08-27 02:27:26,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-08-27 02:27:26,520 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2023-08-27 02:27:26,520 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 369 flow [2023-08-27 02:27:26,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:26,520 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:26,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:27:26,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:26,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -114654468, now seen corresponding path program 1 times [2023-08-27 02:27:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797303839] [2023-08-27 02:27:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:26,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797303839] [2023-08-27 02:27:26,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797303839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:26,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:26,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:27:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830928336] [2023-08-27 02:27:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:27:26,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:27:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:27:26,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 02:27:26,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:26,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 02:27:26,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:26,669 INFO L124 PetriNetUnfolderBase]: 386/837 cut-off events. [2023-08-27 02:27:26,669 INFO L125 PetriNetUnfolderBase]: For 1130/1132 co-relation queries the response was YES. [2023-08-27 02:27:26,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 837 events. 386/837 cut-off events. For 1130/1132 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3804 event pairs, 96 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 2701. Up to 508 conditions per place. [2023-08-27 02:27:26,674 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 49 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2023-08-27 02:27:26,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 535 flow [2023-08-27 02:27:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:27:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:27:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-27 02:27:26,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547979797979798 [2023-08-27 02:27:26,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-27 02:27:26,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-27 02:27:26,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:26,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-27 02:27:26,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,679 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 369 flow. Second operand 3 states and 434 transitions. [2023-08-27 02:27:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 535 flow [2023-08-27 02:27:26,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:27:26,684 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 364 flow [2023-08-27 02:27:26,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-08-27 02:27:26,685 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2023-08-27 02:27:26,685 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 364 flow [2023-08-27 02:27:26,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:26,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:27:26,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:26,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1907734116, now seen corresponding path program 1 times [2023-08-27 02:27:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:26,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515562187] [2023-08-27 02:27:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:26,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515562187] [2023-08-27 02:27:26,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515562187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:26,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873902348] [2023-08-27 02:27:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:26,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:26,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:27:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:26,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:27:26,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:26,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:27:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873902348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:27:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:27:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315144169] [2023-08-27 02:27:26,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:26,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:27:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:27:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:27:26,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 02:27:26,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:26,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:26,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 02:27:26,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:26,997 INFO L124 PetriNetUnfolderBase]: 352/757 cut-off events. [2023-08-27 02:27:26,997 INFO L125 PetriNetUnfolderBase]: For 1247/1253 co-relation queries the response was YES. [2023-08-27 02:27:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 757 events. 352/757 cut-off events. For 1247/1253 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3220 event pairs, 114 based on Foata normal form. 14/769 useless extension candidates. Maximal degree in co-relation 2503. Up to 585 conditions per place. [2023-08-27 02:27:27,003 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-27 02:27:27,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 499 flow [2023-08-27 02:27:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:27:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:27:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-08-27 02:27:27,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464015151515151 [2023-08-27 02:27:27,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-08-27 02:27:27,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-08-27 02:27:27,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:27,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-08-27 02:27:27,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,009 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 364 flow. Second operand 4 states and 577 transitions. [2023-08-27 02:27:27,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 499 flow [2023-08-27 02:27:27,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:27:27,013 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 345 flow [2023-08-27 02:27:27,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-08-27 02:27:27,014 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-27 02:27:27,014 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 345 flow [2023-08-27 02:27:27,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:27,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:27,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:27,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:27,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1178191017, now seen corresponding path program 1 times [2023-08-27 02:27:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595636417] [2023-08-27 02:27:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:27,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:27,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:27,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595636417] [2023-08-27 02:27:27,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595636417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:27,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158276610] [2023-08-27 02:27:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:27,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:27,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:27,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:27:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:27,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:27:27,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:27:27,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:27:27,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158276610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:27,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:27:27,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:27:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903417091] [2023-08-27 02:27:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:27:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:27:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:27:27,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 02:27:27,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:27,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 02:27:27,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:27,551 INFO L124 PetriNetUnfolderBase]: 325/688 cut-off events. [2023-08-27 02:27:27,551 INFO L125 PetriNetUnfolderBase]: For 1177/1183 co-relation queries the response was YES. [2023-08-27 02:27:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 688 events. 325/688 cut-off events. For 1177/1183 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2791 event pairs, 78 based on Foata normal form. 22/708 useless extension candidates. Maximal degree in co-relation 2229. Up to 399 conditions per place. [2023-08-27 02:27:27,555 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 56 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-27 02:27:27,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 544 flow [2023-08-27 02:27:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:27:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:27:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-08-27 02:27:27,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-27 02:27:27,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-08-27 02:27:27,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-08-27 02:27:27,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:27,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-08-27 02:27:27,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,561 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 345 flow. Second operand 4 states and 576 transitions. [2023-08-27 02:27:27,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 544 flow [2023-08-27 02:27:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:27:27,565 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 326 flow [2023-08-27 02:27:27,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-27 02:27:27,566 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-27 02:27:27,566 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 326 flow [2023-08-27 02:27:27,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:27,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:27,567 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 02:27:27,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:27,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:27,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1339107025, now seen corresponding path program 1 times [2023-08-27 02:27:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:27,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606090872] [2023-08-27 02:27:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606090872] [2023-08-27 02:27:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606090872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099558933] [2023-08-27 02:27:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:27,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:27,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:27,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 02:27:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:28,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 02:27:28,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:28,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:27:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:28,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099558933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:27:28,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:27:28,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-08-27 02:27:28,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429188751] [2023-08-27 02:27:28,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:27:28,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:27:28,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:27:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:27:28,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 02:27:28,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:28,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 02:27:28,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:28,196 INFO L124 PetriNetUnfolderBase]: 369/810 cut-off events. [2023-08-27 02:27:28,196 INFO L125 PetriNetUnfolderBase]: For 1270/1276 co-relation queries the response was YES. [2023-08-27 02:27:28,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 810 events. 369/810 cut-off events. For 1270/1276 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3092 event pairs, 126 based on Foata normal form. 78/886 useless extension candidates. Maximal degree in co-relation 2644. Up to 278 conditions per place. [2023-08-27 02:27:28,201 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 72 selfloop transitions, 7 changer transitions 1/93 dead transitions. [2023-08-27 02:27:28,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 730 flow [2023-08-27 02:27:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:27:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:27:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-08-27 02:27:28,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2023-08-27 02:27:28,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-08-27 02:27:28,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-08-27 02:27:28,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:28,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-08-27 02:27:28,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,208 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 326 flow. Second operand 5 states and 730 transitions. [2023-08-27 02:27:28,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 730 flow [2023-08-27 02:27:28,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:27:28,213 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 382 flow [2023-08-27 02:27:28,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-27 02:27:28,214 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2023-08-27 02:27:28,214 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 382 flow [2023-08-27 02:27:28,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:28,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:28,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:28,421 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,SelfDestructingSolverStorable13 [2023-08-27 02:27:28,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:28,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash 375299925, now seen corresponding path program 2 times [2023-08-27 02:27:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347291924] [2023-08-27 02:27:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:27:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:28,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347291924] [2023-08-27 02:27:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347291924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:28,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:27:28,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:27:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842204165] [2023-08-27 02:27:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:27:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:27:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:27:28,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 02:27:28,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:28,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 02:27:28,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:28,676 INFO L124 PetriNetUnfolderBase]: 456/939 cut-off events. [2023-08-27 02:27:28,676 INFO L125 PetriNetUnfolderBase]: For 1796/1796 co-relation queries the response was YES. [2023-08-27 02:27:28,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 939 events. 456/939 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3668 event pairs, 83 based on Foata normal form. 10/949 useless extension candidates. Maximal degree in co-relation 3291. Up to 382 conditions per place. [2023-08-27 02:27:28,690 INFO L140 encePairwiseOnDemand]: 256/264 looper letters, 70 selfloop transitions, 17 changer transitions 3/92 dead transitions. [2023-08-27 02:27:28,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 729 flow [2023-08-27 02:27:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:27:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:27:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2023-08-27 02:27:28,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157828282828283 [2023-08-27 02:27:28,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2023-08-27 02:27:28,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2023-08-27 02:27:28,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:28,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2023-08-27 02:27:28,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,698 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 382 flow. Second operand 6 states and 817 transitions. [2023-08-27 02:27:28,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 729 flow [2023-08-27 02:27:28,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 723 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 02:27:28,703 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 438 flow [2023-08-27 02:27:28,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2023-08-27 02:27:28,704 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2023-08-27 02:27:28,704 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 438 flow [2023-08-27 02:27:28,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:28,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:28,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:28,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:27:28,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:28,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash 709319315, now seen corresponding path program 3 times [2023-08-27 02:27:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693589433] [2023-08-27 02:27:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:27:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693589433] [2023-08-27 02:27:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693589433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601937679] [2023-08-27 02:27:28,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:27:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:28,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:28,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 02:27:29,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:27:29,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:27:29,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:27:29,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:27:29,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:27:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601937679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:27:29,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:27:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-27 02:27:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940287325] [2023-08-27 02:27:29,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:27:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:27:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:27:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:27:29,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 02:27:29,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:29,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 02:27:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:29,226 INFO L124 PetriNetUnfolderBase]: 446/919 cut-off events. [2023-08-27 02:27:29,227 INFO L125 PetriNetUnfolderBase]: For 2032/2032 co-relation queries the response was YES. [2023-08-27 02:27:29,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 919 events. 446/919 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3561 event pairs, 148 based on Foata normal form. 12/931 useless extension candidates. Maximal degree in co-relation 3368. Up to 463 conditions per place. [2023-08-27 02:27:29,252 INFO L140 encePairwiseOnDemand]: 258/264 looper letters, 65 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2023-08-27 02:27:29,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 689 flow [2023-08-27 02:27:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:27:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:27:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 804 transitions. [2023-08-27 02:27:29,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2023-08-27 02:27:29,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 804 transitions. [2023-08-27 02:27:29,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 804 transitions. [2023-08-27 02:27:29,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:29,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 804 transitions. [2023-08-27 02:27:29,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,259 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 438 flow. Second operand 6 states and 804 transitions. [2023-08-27 02:27:29,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 689 flow [2023-08-27 02:27:29,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:27:29,265 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 424 flow [2023-08-27 02:27:29,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=424, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2023-08-27 02:27:29,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2023-08-27 02:27:29,265 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 424 flow [2023-08-27 02:27:29,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:29,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:29,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:29,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 02:27:29,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:29,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1642677609, now seen corresponding path program 2 times [2023-08-27 02:27:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298631731] [2023-08-27 02:27:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298631731] [2023-08-27 02:27:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298631731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681055559] [2023-08-27 02:27:29,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:27:29,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:29,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:29,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:29,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 02:27:29,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:27:29,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:27:29,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:27:29,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:29,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:27:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:27:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681055559] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:27:29,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:27:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-08-27 02:27:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526763800] [2023-08-27 02:27:29,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:27:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:27:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:27:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:27:29,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 02:27:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 424 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 02:27:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:29,954 INFO L124 PetriNetUnfolderBase]: 474/1069 cut-off events. [2023-08-27 02:27:29,954 INFO L125 PetriNetUnfolderBase]: For 2854/2874 co-relation queries the response was YES. [2023-08-27 02:27:29,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 1069 events. 474/1069 cut-off events. For 2854/2874 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4896 event pairs, 141 based on Foata normal form. 62/1120 useless extension candidates. Maximal degree in co-relation 3881. Up to 456 conditions per place. [2023-08-27 02:27:29,960 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 77 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2023-08-27 02:27:29,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 928 flow [2023-08-27 02:27:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:27:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:27:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2023-08-27 02:27:29,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431818181818182 [2023-08-27 02:27:29,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2023-08-27 02:27:29,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2023-08-27 02:27:29,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:29,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2023-08-27 02:27:29,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,967 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 424 flow. Second operand 5 states and 717 transitions. [2023-08-27 02:27:29,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 928 flow [2023-08-27 02:27:29,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 895 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:27:29,973 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 470 flow [2023-08-27 02:27:29,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2023-08-27 02:27:29,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2023-08-27 02:27:29,974 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 470 flow [2023-08-27 02:27:29,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:29,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:29,975 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:29,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:30,181 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:30,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1275871779, now seen corresponding path program 3 times [2023-08-27 02:27:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420135787] [2023-08-27 02:27:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:27:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 02:27:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:27:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420135787] [2023-08-27 02:27:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420135787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:27:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713970130] [2023-08-27 02:27:30,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:27:30,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:27:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:27:30,359 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:27:30,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 02:27:30,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 02:27:30,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:27:30,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 02:27:30,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:27:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 02:27:30,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:27:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 02:27:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713970130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:27:30,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:27:30,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-27 02:27:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857140270] [2023-08-27 02:27:30,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:27:30,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:27:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:27:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:27:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:27:30,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 02:27:30,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:30,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:27:30,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 02:27:30,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:27:30,943 INFO L124 PetriNetUnfolderBase]: 381/824 cut-off events. [2023-08-27 02:27:30,943 INFO L125 PetriNetUnfolderBase]: For 2264/2264 co-relation queries the response was YES. [2023-08-27 02:27:30,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 824 events. 381/824 cut-off events. For 2264/2264 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3126 event pairs, 106 based on Foata normal form. 30/854 useless extension candidates. Maximal degree in co-relation 3250. Up to 347 conditions per place. [2023-08-27 02:27:30,948 INFO L140 encePairwiseOnDemand]: 255/264 looper letters, 64 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2023-08-27 02:27:30,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 759 flow [2023-08-27 02:27:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:27:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:27:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-27 02:27:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834280303030303 [2023-08-27 02:27:30,950 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-27 02:27:30,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-27 02:27:30,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:27:30,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-27 02:27:30,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:30,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:30,955 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:30,955 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 470 flow. Second operand 8 states and 1021 transitions. [2023-08-27 02:27:30,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 759 flow [2023-08-27 02:27:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 715 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 02:27:30,962 INFO L231 Difference]: Finished difference. Result has 81 places, 51 transitions, 427 flow [2023-08-27 02:27:30,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=81, PETRI_TRANSITIONS=51} [2023-08-27 02:27:30,962 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2023-08-27 02:27:30,962 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 51 transitions, 427 flow [2023-08-27 02:27:30,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:27:30,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:27:30,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:30,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:27:31,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 02:27:31,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:27:31,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:27:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1059603841, now seen corresponding path program 4 times [2023-08-27 02:27:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:27:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546386609] [2023-08-27 02:27:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:27:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:27:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:27:31,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:27:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:27:31,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:27:31,243 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:27:31,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 02:27:31,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 02:27:31,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 02:27:31,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:27:31,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:27:31,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:27:31,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:27:31,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:27:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:27:31,247 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:27:31,252 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:27:31,252 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:27:31,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:27:31 BasicIcfg [2023-08-27 02:27:31,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:27:31,318 INFO L158 Benchmark]: Toolchain (without parser) took 16152.87ms. Allocated memory was 348.1MB in the beginning and 509.6MB in the end (delta: 161.5MB). Free memory was 323.2MB in the beginning and 477.0MB in the end (delta: -153.8MB). Peak memory consumption was 298.7MB. Max. memory is 16.0GB. [2023-08-27 02:27:31,318 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:27:31,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.25ms. Allocated memory is still 348.1MB. Free memory was 322.7MB in the beginning and 296.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 02:27:31,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.77ms. Allocated memory is still 348.1MB. Free memory was 296.5MB in the beginning and 293.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 02:27:31,318 INFO L158 Benchmark]: Boogie Preprocessor took 25.59ms. Allocated memory is still 348.1MB. Free memory was 293.9MB in the beginning and 292.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:27:31,319 INFO L158 Benchmark]: RCFGBuilder took 405.93ms. Allocated memory is still 348.1MB. Free memory was 292.3MB in the beginning and 274.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:27:31,319 INFO L158 Benchmark]: TraceAbstraction took 15146.17ms. Allocated memory was 348.1MB in the beginning and 509.6MB in the end (delta: 161.5MB). Free memory was 273.5MB in the beginning and 477.0MB in the end (delta: -203.5MB). Peak memory consumption was 250.5MB. Max. memory is 16.0GB. [2023-08-27 02:27:31,320 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 532.25ms. Allocated memory is still 348.1MB. Free memory was 322.7MB in the beginning and 296.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.77ms. Allocated memory is still 348.1MB. Free memory was 296.5MB in the beginning and 293.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.59ms. Allocated memory is still 348.1MB. Free memory was 293.9MB in the beginning and 292.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 405.93ms. Allocated memory is still 348.1MB. Free memory was 292.3MB in the beginning and 274.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 15146.17ms. Allocated memory was 348.1MB in the beginning and 509.6MB in the end (delta: 161.5MB). Free memory was 273.5MB in the beginning and 477.0MB in the end (delta: -203.5MB). Peak memory consumption was 250.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 218]: Unsoundness Warning unspecified type, defaulting to int C: short [218] - GenericResultAtLocation [Line: 219]: Unsoundness Warning unspecified type, defaulting to int C: short [219] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] - GenericResultAtLocation [Line: 871]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [871] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 135 PlacesBefore, 40 PlacesAfterwards, 136 TransitionsBefore, 38 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 8 FixpointIterations, 55 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 113 TotalNumberOfCompositions, 7564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, independent: 4262, independent conditional: 0, independent unconditional: 4262, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1712, independent: 1671, independent conditional: 0, independent unconditional: 1671, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, independent: 2591, independent conditional: 0, independent unconditional: 2591, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 1712, unknown conditional: 0, unknown unconditional: 1712] , Statistics on independence cache: Total cache size (in pairs): 208, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: assertion can be violated assertion can be violated We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={6:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={6:0}, t2={7:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] CALL 0 reach_error() [L18] COND FALSE 0 !(0) [L18] 0 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] - UnprovableResult [Line: 882]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 882]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 885]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 885]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 897]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 897]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 900]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 900]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 202 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 678 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 678 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1947 IncrementalHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 7 mSDtfsCounter, 1947 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 317 SyntacticMatches, 15 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=17, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 604 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680 SizeOfPredicates, 17 NumberOfNonLiveVariables, 2220 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 209/279 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-27 02:27:31,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...