/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/weaver/popl20-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:12:48,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:12:48,179 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 01:12:48,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:12:48,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:12:48,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:12:48,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:12:48,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:12:48,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:12:48,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:12:48,205 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:12:48,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:12:48,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:12:48,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:12:48,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:12:48,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:12:48,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:12:48,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:12:48,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:12:48,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:12:48,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:12:48,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:12:48,213 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:12:48,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:12:48,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:12:48,214 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:12:48,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:12:48,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:12:48,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:12:48,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:12:48,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:12:48,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:12:48,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:12:48,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:12:48,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:12:48,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:12:48,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:12:48,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:12:48,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:12:48,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:12:48,584 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:12:48,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-27 01:12:49,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:12:49,934 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:12:49,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-27 01:12:49,941 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de601f6aa/b65748b6d228411eb794ce10a8e02abf/FLAG8c5fcca9c [2023-08-27 01:12:49,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de601f6aa/b65748b6d228411eb794ce10a8e02abf [2023-08-27 01:12:49,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:12:49,955 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:12:49,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:12:49,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:12:49,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:12:49,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:12:49" (1/1) ... [2023-08-27 01:12:49,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ab25cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:49, skipping insertion in model container [2023-08-27 01:12:49,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:12:49" (1/1) ... [2023-08-27 01:12:49,981 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:12:50,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:12:50,189 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:12:50,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:12:50,236 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:12:50,236 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:12:50,246 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:12:50,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50 WrapperNode [2023-08-27 01:12:50,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:12:50,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:12:50,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:12:50,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:12:50,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,300 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-08-27 01:12:50,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:12:50,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:12:50,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:12:50,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:12:50,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:12:50,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:12:50,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:12:50,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:12:50,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (1/1) ... [2023-08-27 01:12:50,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:12:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:50,378 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 01:12:50,408 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 01:12:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:12:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:12:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:12:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:12:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:12:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:12:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:12:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:12:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:12:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:12:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:12:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:12:50,425 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 01:12:50,541 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:12:50,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:12:50,911 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:12:50,992 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:12:50,992 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:12:50,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:12:50 BoogieIcfgContainer [2023-08-27 01:12:50,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:12:50,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:12:50,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:12:50,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:12:50,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:12:49" (1/3) ... [2023-08-27 01:12:51,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27743b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:12:50, skipping insertion in model container [2023-08-27 01:12:51,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:12:50" (2/3) ... [2023-08-27 01:12:51,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27743b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:12:51, skipping insertion in model container [2023-08-27 01:12:51,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:12:50" (3/3) ... [2023-08-27 01:12:51,006 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-08-27 01:12:51,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:12:51,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 01:12:51,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:12:51,090 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:12:51,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 356 flow [2023-08-27 01:12:51,178 INFO L124 PetriNetUnfolderBase]: 12/163 cut-off events. [2023-08-27 01:12:51,179 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:12:51,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 163 events. 12/163 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-08-27 01:12:51,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 166 transitions, 356 flow [2023-08-27 01:12:51,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 152 transitions, 322 flow [2023-08-27 01:12:51,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:12:51,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 152 transitions, 322 flow [2023-08-27 01:12:51,204 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 152 transitions, 322 flow [2023-08-27 01:12:51,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 152 transitions, 322 flow [2023-08-27 01:12:51,237 INFO L124 PetriNetUnfolderBase]: 12/152 cut-off events. [2023-08-27 01:12:51,237 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:12:51,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 12/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-08-27 01:12:51,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-08-27 01:12:56,353 INFO L134 LiptonReduction]: Checked pairs total: 2933 [2023-08-27 01:12:56,353 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-27 01:12:56,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:12:56,372 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;@6554c70e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:12:56,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 01:12:56,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:12:56,375 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:12:56,375 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:12:56,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:56,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:12:56,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:56,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 21671, now seen corresponding path program 1 times [2023-08-27 01:12:56,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378759514] [2023-08-27 01:12:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:56,634 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 01:12:56,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378759514] [2023-08-27 01:12:56,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378759514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:56,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:12:56,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:12:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331448912] [2023-08-27 01:12:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:12:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:12:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:12:56,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 325 [2023-08-27 01:12:56,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:56,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:56,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 325 [2023-08-27 01:12:56,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:56,953 INFO L124 PetriNetUnfolderBase]: 1226/1603 cut-off events. [2023-08-27 01:12:56,954 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 01:12:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 1603 events. 1226/1603 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6139 event pairs, 578 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 2744. Up to 1573 conditions per place. [2023-08-27 01:12:56,974 INFO L140 encePairwiseOnDemand]: 320/325 looper letters, 28 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 01:12:56,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 148 flow [2023-08-27 01:12:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:12:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:12:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-27 01:12:56,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-08-27 01:12:56,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-27 01:12:56,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-27 01:12:57,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:57,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-27 01:12:57,010 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 01:12:57,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,019 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 3 states and 453 transitions. [2023-08-27 01:12:57,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 148 flow [2023-08-27 01:12:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:12:57,028 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 91 flow [2023-08-27 01:12:57,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 01:12:57,035 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-27 01:12:57,036 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 91 flow [2023-08-27 01:12:57,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:57,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:12:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:12:57,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:57,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash 673105, now seen corresponding path program 1 times [2023-08-27 01:12:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:57,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711358663] [2023-08-27 01:12:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711358663] [2023-08-27 01:12:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711358663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916649171] [2023-08-27 01:12:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:57,197 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 01:12:57,232 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 01:12:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:57,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:12:57,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:57,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:12:57,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916649171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:57,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:12:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:12:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496940347] [2023-08-27 01:12:57,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:57,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:12:57,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:12:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:12:57,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 325 [2023-08-27 01:12:57,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:57,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 325 [2023-08-27 01:12:57,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:57,551 INFO L124 PetriNetUnfolderBase]: 1226/1602 cut-off events. [2023-08-27 01:12:57,551 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:12:57,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 1602 events. 1226/1602 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6138 event pairs, 578 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 3193. Up to 1569 conditions per place. [2023-08-27 01:12:57,562 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 26 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-08-27 01:12:57,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 147 flow [2023-08-27 01:12:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:12:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:12:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 591 transitions. [2023-08-27 01:12:57,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546153846153846 [2023-08-27 01:12:57,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 591 transitions. [2023-08-27 01:12:57,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 591 transitions. [2023-08-27 01:12:57,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:57,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 591 transitions. [2023-08-27 01:12:57,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,580 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 91 flow. Second operand 4 states and 591 transitions. [2023-08-27 01:12:57,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 147 flow [2023-08-27 01:12:57,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:12:57,582 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 90 flow [2023-08-27 01:12:57,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-27 01:12:57,583 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-08-27 01:12:57,583 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 90 flow [2023-08-27 01:12:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:57,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:57,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:12:57,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 01:12:57,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:57,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:57,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 673113, now seen corresponding path program 1 times [2023-08-27 01:12:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:57,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951005217] [2023-08-27 01:12:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:57,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951005217] [2023-08-27 01:12:57,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951005217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:57,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240932200] [2023-08-27 01:12:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:57,888 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 01:12:57,890 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 01:12:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:57,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:12:57,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:57,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:12:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:57,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240932200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:12:57,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:12:57,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:12:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471668874] [2023-08-27 01:12:57,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:12:57,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:12:57,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:57,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:12:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:12:58,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 325 [2023-08-27 01:12:58,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 325 [2023-08-27 01:12:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:58,201 INFO L124 PetriNetUnfolderBase]: 1229/1608 cut-off events. [2023-08-27 01:12:58,201 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:12:58,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1608 events. 1229/1608 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6147 event pairs, 578 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 3193. Up to 1575 conditions per place. [2023-08-27 01:12:58,212 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 27 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2023-08-27 01:12:58,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 192 flow [2023-08-27 01:12:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:12:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:12:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 879 transitions. [2023-08-27 01:12:58,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45076923076923076 [2023-08-27 01:12:58,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 879 transitions. [2023-08-27 01:12:58,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 879 transitions. [2023-08-27 01:12:58,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:58,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 879 transitions. [2023-08-27 01:12:58,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,222 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 90 flow. Second operand 6 states and 879 transitions. [2023-08-27 01:12:58,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 192 flow [2023-08-27 01:12:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:12:58,224 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 148 flow [2023-08-27 01:12:58,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-27 01:12:58,225 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-27 01:12:58,225 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 148 flow [2023-08-27 01:12:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:58,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:12:58,235 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 01:12:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 01:12:58,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:58,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:58,433 INFO L85 PathProgramCache]: Analyzing trace with hash 646439431, now seen corresponding path program 1 times [2023-08-27 01:12:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386695119] [2023-08-27 01:12:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:58,481 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 01:12:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386695119] [2023-08-27 01:12:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386695119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:58,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:12:58,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:12:58,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965139313] [2023-08-27 01:12:58,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:12:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:12:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:12:58,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:12:58,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:58,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:12:58,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:58,712 INFO L124 PetriNetUnfolderBase]: 1340/1781 cut-off events. [2023-08-27 01:12:58,712 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 01:12:58,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 1781 events. 1340/1781 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7259 event pairs, 580 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 3574. Up to 1485 conditions per place. [2023-08-27 01:12:58,723 INFO L140 encePairwiseOnDemand]: 320/325 looper letters, 49 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-27 01:12:58,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 284 flow [2023-08-27 01:12:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:12:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:12:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-27 01:12:58,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841025641025641 [2023-08-27 01:12:58,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-27 01:12:58,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-27 01:12:58,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:58,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-27 01:12:58,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,730 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 148 flow. Second operand 3 states and 472 transitions. [2023-08-27 01:12:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 284 flow [2023-08-27 01:12:58,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 263 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:12:58,732 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 148 flow [2023-08-27 01:12:58,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-08-27 01:12:58,733 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-27 01:12:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 148 flow [2023-08-27 01:12:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:58,734 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:12:58,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:12:58,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:58,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1421070545, now seen corresponding path program 2 times [2023-08-27 01:12:58,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:58,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160684738] [2023-08-27 01:12:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:58,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160684738] [2023-08-27 01:12:58,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160684738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143766701] [2023-08-27 01:12:58,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:12:58,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:58,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:58,813 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 01:12:58,836 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 01:12:58,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:12:58,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:12:58,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:12:58,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:12:58,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:12:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143766701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:58,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:12:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:12:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430089243] [2023-08-27 01:12:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:12:58,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:12:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:12:58,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 325 [2023-08-27 01:12:58,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:58,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:58,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 325 [2023-08-27 01:12:58,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:59,052 INFO L124 PetriNetUnfolderBase]: 1121/1500 cut-off events. [2023-08-27 01:12:59,053 INFO L125 PetriNetUnfolderBase]: For 128/183 co-relation queries the response was YES. [2023-08-27 01:12:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1500 events. 1121/1500 cut-off events. For 128/183 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 5899 event pairs, 580 based on Foata normal form. 56/627 useless extension candidates. Maximal degree in co-relation 3451. Up to 1471 conditions per place. [2023-08-27 01:12:59,063 INFO L140 encePairwiseOnDemand]: 323/325 looper letters, 36 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-27 01:12:59,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 212 flow [2023-08-27 01:12:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:12:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:12:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-27 01:12:59,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625641025641026 [2023-08-27 01:12:59,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-27 01:12:59,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-27 01:12:59,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:59,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-27 01:12:59,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,070 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 148 flow. Second operand 3 states and 451 transitions. [2023-08-27 01:12:59,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 212 flow [2023-08-27 01:12:59,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 191 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:12:59,072 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 119 flow [2023-08-27 01:12:59,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-27 01:12:59,074 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-08-27 01:12:59,075 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 119 flow [2023-08-27 01:12:59,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:59,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:12:59,087 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 01:12:59,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:59,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:59,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1435213565, now seen corresponding path program 1 times [2023-08-27 01:12:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742981316] [2023-08-27 01:12:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742981316] [2023-08-27 01:12:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742981316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:12:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 01:12:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372367659] [2023-08-27 01:12:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:59,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:12:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:12:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:12:59,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 325 [2023-08-27 01:12:59,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:59,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 325 [2023-08-27 01:12:59,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:59,567 INFO L124 PetriNetUnfolderBase]: 1295/1735 cut-off events. [2023-08-27 01:12:59,567 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-08-27 01:12:59,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 1735 events. 1295/1735 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7050 event pairs, 689 based on Foata normal form. 1/750 useless extension candidates. Maximal degree in co-relation 3813. Up to 1701 conditions per place. [2023-08-27 01:12:59,575 INFO L140 encePairwiseOnDemand]: 322/325 looper letters, 35 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 01:12:59,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 189 flow [2023-08-27 01:12:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:12:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:12:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-27 01:12:59,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123076923076923 [2023-08-27 01:12:59,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-27 01:12:59,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-27 01:12:59,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:59,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-27 01:12:59,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,579 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 119 flow. Second operand 3 states and 402 transitions. [2023-08-27 01:12:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 189 flow [2023-08-27 01:12:59,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:12:59,580 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 118 flow [2023-08-27 01:12:59,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-27 01:12:59,581 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-27 01:12:59,581 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 118 flow [2023-08-27 01:12:59,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:59,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:59,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 01:12:59,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:12:59,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1117655891, now seen corresponding path program 1 times [2023-08-27 01:12:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841210175] [2023-08-27 01:12:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:59,623 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 01:12:59,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841210175] [2023-08-27 01:12:59,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841210175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816138524] [2023-08-27 01:12:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:59,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:59,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:59,625 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 01:12:59,649 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 01:12:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:59,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:12:59,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:59,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:12:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816138524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:12:59,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:12:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:12:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127439642] [2023-08-27 01:12:59,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:12:59,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:12:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:12:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:12:59,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 325 [2023-08-27 01:12:59,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 118 flow. Second operand has 13 states, 13 states have (on average 125.53846153846153) internal successors, (1632), 13 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:59,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:59,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 325 [2023-08-27 01:12:59,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:00,236 INFO L124 PetriNetUnfolderBase]: 2029/2688 cut-off events. [2023-08-27 01:13:00,236 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-27 01:13:00,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5877 conditions, 2688 events. 2029/2688 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11586 event pairs, 271 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 5867. Up to 681 conditions per place. [2023-08-27 01:13:00,252 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 97 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2023-08-27 01:13:00,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 111 transitions, 498 flow [2023-08-27 01:13:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:13:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:13:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1228 transitions. [2023-08-27 01:13:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198290598290598 [2023-08-27 01:13:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1228 transitions. [2023-08-27 01:13:00,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1228 transitions. [2023-08-27 01:13:00,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:00,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1228 transitions. [2023-08-27 01:13:00,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.44444444444446) internal successors, (1228), 9 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,263 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,263 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 118 flow. Second operand 9 states and 1228 transitions. [2023-08-27 01:13:00,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 111 transitions, 498 flow [2023-08-27 01:13:00,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 111 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:13:00,266 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 168 flow [2023-08-27 01:13:00,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-27 01:13:00,267 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-08-27 01:13:00,267 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 168 flow [2023-08-27 01:13:00,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 125.53846153846153) internal successors, (1632), 13 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:00,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:00,276 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 01:13:00,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:00,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:00,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash -282303666, now seen corresponding path program 1 times [2023-08-27 01:13:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812029334] [2023-08-27 01:13:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:00,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:00,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812029334] [2023-08-27 01:13:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812029334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:13:00,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:13:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:13:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411800871] [2023-08-27 01:13:00,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:13:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:13:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:13:00,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:13:00,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 168 flow. Second operand has 3 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 01:13:00,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:00,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:13:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:00,756 INFO L124 PetriNetUnfolderBase]: 1759/2406 cut-off events. [2023-08-27 01:13:00,756 INFO L125 PetriNetUnfolderBase]: For 2541/2704 co-relation queries the response was YES. [2023-08-27 01:13:00,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6336 conditions, 2406 events. 1759/2406 cut-off events. For 2541/2704 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10670 event pairs, 821 based on Foata normal form. 143/1626 useless extension candidates. Maximal degree in co-relation 6323. Up to 2010 conditions per place. [2023-08-27 01:13:00,777 INFO L140 encePairwiseOnDemand]: 320/325 looper letters, 55 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-27 01:13:00,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 365 flow [2023-08-27 01:13:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:13:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:13:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-27 01:13:00,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48102564102564105 [2023-08-27 01:13:00,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-27 01:13:00,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-27 01:13:00,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:00,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-27 01:13:00,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,782 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 168 flow. Second operand 3 states and 469 transitions. [2023-08-27 01:13:00,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 365 flow [2023-08-27 01:13:00,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:13:00,788 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 176 flow [2023-08-27 01:13:00,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-27 01:13:00,790 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-08-27 01:13:00,790 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 176 flow [2023-08-27 01:13:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 01:13:00,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:00,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:00,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 01:13:00,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:00,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 136697442, now seen corresponding path program 1 times [2023-08-27 01:13:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108865853] [2023-08-27 01:13:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:13:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108865853] [2023-08-27 01:13:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108865853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90049254] [2023-08-27 01:13:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:00,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:00,853 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 01:13:00,856 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 01:13:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:00,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:13:00,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:13:00,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:13:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90049254] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:00,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:00,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:13:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506497520] [2023-08-27 01:13:00,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:00,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:13:00,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:00,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:13:00,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:13:00,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:13:00,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:00,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:13:00,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:01,387 INFO L124 PetriNetUnfolderBase]: 2569/3417 cut-off events. [2023-08-27 01:13:01,388 INFO L125 PetriNetUnfolderBase]: For 2035/2194 co-relation queries the response was YES. [2023-08-27 01:13:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10467 conditions, 3417 events. 2569/3417 cut-off events. For 2035/2194 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 15115 event pairs, 722 based on Foata normal form. 154/2314 useless extension candidates. Maximal degree in co-relation 10453. Up to 1994 conditions per place. [2023-08-27 01:13:01,404 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 95 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2023-08-27 01:13:01,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 636 flow [2023-08-27 01:13:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:13:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:13:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 942 transitions. [2023-08-27 01:13:01,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48307692307692307 [2023-08-27 01:13:01,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 942 transitions. [2023-08-27 01:13:01,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 942 transitions. [2023-08-27 01:13:01,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:01,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 942 transitions. [2023-08-27 01:13:01,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:01,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:01,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:01,412 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 176 flow. Second operand 6 states and 942 transitions. [2023-08-27 01:13:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 636 flow [2023-08-27 01:13:01,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 615 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 01:13:01,420 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 254 flow [2023-08-27 01:13:01,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-08-27 01:13:01,421 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2023-08-27 01:13:01,421 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 254 flow [2023-08-27 01:13:01,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:01,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:01,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:01,431 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 01:13:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:01,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:01,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -161477377, now seen corresponding path program 1 times [2023-08-27 01:13:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41949067] [2023-08-27 01:13:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:01,675 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 01:13:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41949067] [2023-08-27 01:13:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41949067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93547669] [2023-08-27 01:13:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:01,677 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 01:13:01,679 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 01:13:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:01,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:13:01,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:01,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:13:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93547669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:13:01,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:13:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 01:13:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238590839] [2023-08-27 01:13:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:13:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:13:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:13:01,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:13:01,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 254 flow. Second operand has 4 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 01:13:01,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:01,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:13:01,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:02,039 INFO L124 PetriNetUnfolderBase]: 2274/3007 cut-off events. [2023-08-27 01:13:02,039 INFO L125 PetriNetUnfolderBase]: For 5746/5987 co-relation queries the response was YES. [2023-08-27 01:13:02,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10251 conditions, 3007 events. 2274/3007 cut-off events. For 5746/5987 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12708 event pairs, 310 based on Foata normal form. 230/2465 useless extension candidates. Maximal degree in co-relation 10234. Up to 1260 conditions per place. [2023-08-27 01:13:02,059 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 88 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-27 01:13:02,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 734 flow [2023-08-27 01:13:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:13:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:13:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 621 transitions. [2023-08-27 01:13:02,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776923076923077 [2023-08-27 01:13:02,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 621 transitions. [2023-08-27 01:13:02,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 621 transitions. [2023-08-27 01:13:02,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:02,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 621 transitions. [2023-08-27 01:13:02,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:02,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:02,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:02,065 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 254 flow. Second operand 4 states and 621 transitions. [2023-08-27 01:13:02,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 734 flow [2023-08-27 01:13:02,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 95 transitions, 666 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-27 01:13:02,074 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 234 flow [2023-08-27 01:13:02,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-27 01:13:02,075 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-27 01:13:02,075 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 234 flow [2023-08-27 01:13:02,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 01:13:02,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:02,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:02,080 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 01:13:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:02,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:02,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -161477361, now seen corresponding path program 1 times [2023-08-27 01:13:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:02,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259606158] [2023-08-27 01:13:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:02,354 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 01:13:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259606158] [2023-08-27 01:13:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259606158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736140020] [2023-08-27 01:13:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:02,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:02,356 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 01:13:02,359 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 01:13:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:02,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:13:02,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:02,450 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 01:13:02,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:02,464 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 01:13:02,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736140020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:02,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:02,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:13:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975703640] [2023-08-27 01:13:02,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:13:02,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:13:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:13:02,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:13:02,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:02,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:02,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:13:02,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:02,999 INFO L124 PetriNetUnfolderBase]: 3921/5062 cut-off events. [2023-08-27 01:13:02,999 INFO L125 PetriNetUnfolderBase]: For 7175/7559 co-relation queries the response was YES. [2023-08-27 01:13:03,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17283 conditions, 5062 events. 3921/5062 cut-off events. For 7175/7559 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 21645 event pairs, 931 based on Foata normal form. 368/4510 useless extension candidates. Maximal degree in co-relation 17265. Up to 2803 conditions per place. [2023-08-27 01:13:03,036 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 135 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2023-08-27 01:13:03,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 147 transitions, 1064 flow [2023-08-27 01:13:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:13:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:13:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 937 transitions. [2023-08-27 01:13:03,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805128205128205 [2023-08-27 01:13:03,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 937 transitions. [2023-08-27 01:13:03,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 937 transitions. [2023-08-27 01:13:03,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:03,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 937 transitions. [2023-08-27 01:13:03,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.16666666666666) internal successors, (937), 6 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,044 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 234 flow. Second operand 6 states and 937 transitions. [2023-08-27 01:13:03,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 147 transitions, 1064 flow [2023-08-27 01:13:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 147 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:13:03,073 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 292 flow [2023-08-27 01:13:03,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-27 01:13:03,074 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-27 01:13:03,074 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 292 flow [2023-08-27 01:13:03,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:03,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:03,085 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 01:13:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:03,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:03,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash -705967248, now seen corresponding path program 1 times [2023-08-27 01:13:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446294784] [2023-08-27 01:13:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:03,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:03,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446294784] [2023-08-27 01:13:03,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446294784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:13:03,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:13:03,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:13:03,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008149207] [2023-08-27 01:13:03,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:13:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:13:03,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:13:03,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 325 [2023-08-27 01:13:03,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:03,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 325 [2023-08-27 01:13:03,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:03,676 INFO L124 PetriNetUnfolderBase]: 2567/3405 cut-off events. [2023-08-27 01:13:03,676 INFO L125 PetriNetUnfolderBase]: For 8774/9256 co-relation queries the response was YES. [2023-08-27 01:13:03,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 3405 events. 2567/3405 cut-off events. For 8774/9256 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13436 event pairs, 794 based on Foata normal form. 482/3713 useless extension candidates. Maximal degree in co-relation 13476. Up to 1916 conditions per place. [2023-08-27 01:13:03,700 INFO L140 encePairwiseOnDemand]: 321/325 looper letters, 78 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-08-27 01:13:03,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 648 flow [2023-08-27 01:13:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:13:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:13:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 585 transitions. [2023-08-27 01:13:03,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-27 01:13:03,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 585 transitions. [2023-08-27 01:13:03,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 585 transitions. [2023-08-27 01:13:03,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:03,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 585 transitions. [2023-08-27 01:13:03,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,708 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 292 flow. Second operand 4 states and 585 transitions. [2023-08-27 01:13:03,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 648 flow [2023-08-27 01:13:03,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 607 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-27 01:13:03,730 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 275 flow [2023-08-27 01:13:03,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-27 01:13:03,730 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-27 01:13:03,730 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 275 flow [2023-08-27 01:13:03,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:03,731 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 01:13:03,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:03,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1517777455, now seen corresponding path program 1 times [2023-08-27 01:13:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:03,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572661350] [2023-08-27 01:13:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:03,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:03,815 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 01:13:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572661350] [2023-08-27 01:13:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572661350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589317307] [2023-08-27 01:13:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:03,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:03,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:03,817 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 01:13:03,819 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 01:13:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:03,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:13:03,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:13:03,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:13:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589317307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:13:03,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:13:03,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 01:13:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510872915] [2023-08-27 01:13:03,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:03,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:13:03,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:13:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:13:03,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 325 [2023-08-27 01:13:03,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:03,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:03,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 325 [2023-08-27 01:13:03,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:04,167 INFO L124 PetriNetUnfolderBase]: 2055/2691 cut-off events. [2023-08-27 01:13:04,167 INFO L125 PetriNetUnfolderBase]: For 5834/6234 co-relation queries the response was YES. [2023-08-27 01:13:04,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 2691 events. 2055/2691 cut-off events. For 5834/6234 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10170 event pairs, 994 based on Foata normal form. 621/3258 useless extension candidates. Maximal degree in co-relation 9576. Up to 2669 conditions per place. [2023-08-27 01:13:04,186 INFO L140 encePairwiseOnDemand]: 322/325 looper letters, 47 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-27 01:13:04,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 351 flow [2023-08-27 01:13:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:13:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:13:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-27 01:13:04,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553846153846154 [2023-08-27 01:13:04,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-27 01:13:04,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-27 01:13:04,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:04,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-27 01:13:04,190 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 01:13:04,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,191 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 275 flow. Second operand 3 states and 444 transitions. [2023-08-27 01:13:04,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 351 flow [2023-08-27 01:13:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 310 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-27 01:13:04,213 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 216 flow [2023-08-27 01:13:04,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-08-27 01:13:04,213 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-27 01:13:04,213 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 216 flow [2023-08-27 01:13:04,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:04,214 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:13:04,224 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 01:13:04,429 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,SelfDestructingSolverStorable12 [2023-08-27 01:13:04,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:04,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -207501410, now seen corresponding path program 2 times [2023-08-27 01:13:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875169673] [2023-08-27 01:13:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875169673] [2023-08-27 01:13:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875169673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655040123] [2023-08-27 01:13:04,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:13:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:04,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:13:04,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 01:13:04,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:13:04,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:13:04,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:13:04,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 01:13:04,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:13:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655040123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:13:04,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:13:04,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 01:13:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198402625] [2023-08-27 01:13:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:13:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:13:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:13:04,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-27 01:13:04,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 216 flow. Second operand has 3 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 01:13:04,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:04,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-27 01:13:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:04,835 INFO L124 PetriNetUnfolderBase]: 1741/2293 cut-off events. [2023-08-27 01:13:04,835 INFO L125 PetriNetUnfolderBase]: For 2920/3174 co-relation queries the response was YES. [2023-08-27 01:13:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7052 conditions, 2293 events. 1741/2293 cut-off events. For 2920/3174 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8198 event pairs, 882 based on Foata normal form. 338/2491 useless extension candidates. Maximal degree in co-relation 7035. Up to 2286 conditions per place. [2023-08-27 01:13:04,849 INFO L140 encePairwiseOnDemand]: 323/325 looper letters, 47 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-27 01:13:04,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 302 flow [2023-08-27 01:13:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:13:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:13:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-27 01:13:04,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605128205128205 [2023-08-27 01:13:04,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-27 01:13:04,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-27 01:13:04,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:04,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-27 01:13:04,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:04,855 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 216 flow. Second operand 3 states and 449 transitions. [2023-08-27 01:13:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 302 flow [2023-08-27 01:13:04,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 285 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 01:13:04,869 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 191 flow [2023-08-27 01:13:04,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-08-27 01:13:04,870 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-27 01:13:04,870 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 191 flow [2023-08-27 01:13:04,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 01:13:04,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:04,871 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] [2023-08-27 01:13:04,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 01:13:05,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 01:13:05,077 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:05,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash 864075445, now seen corresponding path program 1 times [2023-08-27 01:13:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910266493] [2023-08-27 01:13:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910266493] [2023-08-27 01:13:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910266493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932539418] [2023-08-27 01:13:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:05,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:05,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:13:05,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 01:13:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:05,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:13:05,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:05,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:05,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932539418] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:05,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:13:05,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 01:13:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7331122] [2023-08-27 01:13:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:13:05,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:13:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:13:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:13:05,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 325 [2023-08-27 01:13:05,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 191 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 01:13:05,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:05,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 325 [2023-08-27 01:13:05,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:05,594 INFO L124 PetriNetUnfolderBase]: 2032/2680 cut-off events. [2023-08-27 01:13:05,594 INFO L125 PetriNetUnfolderBase]: For 1905/1995 co-relation queries the response was YES. [2023-08-27 01:13:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 2680 events. 2032/2680 cut-off events. For 1905/1995 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10394 event pairs, 837 based on Foata normal form. 190/2539 useless extension candidates. Maximal degree in co-relation 6941. Up to 2247 conditions per place. [2023-08-27 01:13:05,609 INFO L140 encePairwiseOnDemand]: 320/325 looper letters, 58 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-27 01:13:05,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 362 flow [2023-08-27 01:13:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:13:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:13:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2023-08-27 01:13:05,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024615384615385 [2023-08-27 01:13:05,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2023-08-27 01:13:05,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2023-08-27 01:13:05,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:05,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2023-08-27 01:13:05,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:05,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:05,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:05,618 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 191 flow. Second operand 5 states and 654 transitions. [2023-08-27 01:13:05,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 362 flow [2023-08-27 01:13:05,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:13:05,631 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 192 flow [2023-08-27 01:13:05,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-08-27 01:13:05,631 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-08-27 01:13:05,632 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 192 flow [2023-08-27 01:13:05,632 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 01:13:05,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:05,632 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] [2023-08-27 01:13:05,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 01:13:05,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 01:13:05,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:05,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1413022366, now seen corresponding path program 1 times [2023-08-27 01:13:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445738943] [2023-08-27 01:13:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:05,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:05,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445738943] [2023-08-27 01:13:05,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445738943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:05,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449756541] [2023-08-27 01:13:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:05,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:05,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:05,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:13:05,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 01:13:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:06,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:13:06,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:06,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:13:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449756541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:06,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:06,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 01:13:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779386113] [2023-08-27 01:13:06,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:06,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:13:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:13:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:13:06,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:13:06,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 192 flow. Second operand has 13 states, 13 states have (on average 118.61538461538461) internal successors, (1542), 13 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:06,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:06,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:13:06,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:06,767 INFO L124 PetriNetUnfolderBase]: 2560/3501 cut-off events. [2023-08-27 01:13:06,767 INFO L125 PetriNetUnfolderBase]: For 2404/2569 co-relation queries the response was YES. [2023-08-27 01:13:06,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 3501 events. 2560/3501 cut-off events. For 2404/2569 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14820 event pairs, 254 based on Foata normal form. 165/3481 useless extension candidates. Maximal degree in co-relation 9370. Up to 1264 conditions per place. [2023-08-27 01:13:06,786 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 171 selfloop transitions, 29 changer transitions 0/202 dead transitions. [2023-08-27 01:13:06,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 202 transitions, 1189 flow [2023-08-27 01:13:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:13:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:13:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1614 transitions. [2023-08-27 01:13:06,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3820118343195266 [2023-08-27 01:13:06,791 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1614 transitions. [2023-08-27 01:13:06,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1614 transitions. [2023-08-27 01:13:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:06,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1614 transitions. [2023-08-27 01:13:06,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.15384615384616) internal successors, (1614), 13 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:06,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:06,802 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:06,802 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 192 flow. Second operand 13 states and 1614 transitions. [2023-08-27 01:13:06,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 202 transitions, 1189 flow [2023-08-27 01:13:06,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 202 transitions, 1145 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:13:06,813 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 332 flow [2023-08-27 01:13:06,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-27 01:13:06,814 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-08-27 01:13:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 332 flow [2023-08-27 01:13:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 118.61538461538461) internal successors, (1542), 13 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:06,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:06,815 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 01:13:06,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 01:13:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 01:13:07,021 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:07,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash -930950413, now seen corresponding path program 1 times [2023-08-27 01:13:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852031796] [2023-08-27 01:13:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:08,239 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 01:13:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852031796] [2023-08-27 01:13:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852031796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601167616] [2023-08-27 01:13:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:08,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:08,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:13:08,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 01:13:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:08,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 01:13:08,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:08,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:13:08,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:13:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:13:08,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:13:08,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:13:08,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:13:09,037 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:13:09,039 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:09,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-27 01:13:09,182 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 01:13:09,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:09,557 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~max1~0 c_~max2~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or .cse0 (forall ((v_ArrVal_591 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_591) c_~A~0.base) .cse2))) (or (< c_~max2~0 .cse1) (<= .cse1 c_~max3~0))))) (or (and (or .cse0 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_591 (Array Int Int))) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_591) c_~A~0.base) .cse2)))) (forall ((v_ArrVal_591 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_591) c_~A~0.base) .cse2))) (or (= c_~max1~0 .cse3) (<= .cse3 c_~max2~0) (<= .cse3 c_~max3~0)))))) is different from false [2023-08-27 01:13:50,632 WARN L234 SmtUtils]: Spent 34.81s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 01:13:50,740 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:50,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-08-27 01:13:50,758 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:50,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1264 treesize of output 1200 [2023-08-27 01:13:50,787 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:50,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2023-08-27 01:13:50,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-08-27 01:13:50,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 46 [2023-08-27 01:13:51,107 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:51,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-08-27 01:13:51,128 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:51,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 913 treesize of output 869 [2023-08-27 01:13:51,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 160 [2023-08-27 01:13:51,204 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:51,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 157 [2023-08-27 01:13:51,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 139 [2023-08-27 01:13:51,671 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:51,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-08-27 01:13:51,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:13:51,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:13:51,692 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:13:51,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2023-08-27 01:13:51,711 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:13:51,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-08-27 01:13:51,732 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-27 01:13:51,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 1 [2023-08-27 01:13:51,743 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-27 01:13:51,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 1 [2023-08-27 01:13:51,755 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-27 01:13:51,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 1 [2023-08-27 01:13:51,769 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-27 01:13:51,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 1 [2023-08-27 01:13:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:13:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601167616] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:51,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-08-27 01:13:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307405912] [2023-08-27 01:13:51,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 01:13:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 01:13:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=701, Unknown=16, NotChecked=54, Total=870 [2023-08-27 01:13:51,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 325 [2023-08-27 01:13:51,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 332 flow. Second operand has 30 states, 30 states have (on average 92.2) internal successors, (2766), 30 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:51,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:51,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 325 [2023-08-27 01:13:51,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:56,006 INFO L124 PetriNetUnfolderBase]: 2993/4124 cut-off events. [2023-08-27 01:13:56,007 INFO L125 PetriNetUnfolderBase]: For 7437/7481 co-relation queries the response was YES. [2023-08-27 01:13:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13904 conditions, 4124 events. 2993/4124 cut-off events. For 7437/7481 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17294 event pairs, 586 based on Foata normal form. 45/4169 useless extension candidates. Maximal degree in co-relation 13884. Up to 3687 conditions per place. [2023-08-27 01:13:56,033 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 117 selfloop transitions, 46 changer transitions 1/166 dead transitions. [2023-08-27 01:13:56,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 166 transitions, 1100 flow [2023-08-27 01:13:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:13:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:13:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1083 transitions. [2023-08-27 01:13:56,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30293706293706296 [2023-08-27 01:13:56,037 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1083 transitions. [2023-08-27 01:13:56,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1083 transitions. [2023-08-27 01:13:56,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:56,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1083 transitions. [2023-08-27 01:13:56,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.45454545454545) internal successors, (1083), 11 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:56,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:56,044 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:56,044 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 332 flow. Second operand 11 states and 1083 transitions. [2023-08-27 01:13:56,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 166 transitions, 1100 flow [2023-08-27 01:13:56,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 166 transitions, 996 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-27 01:13:56,089 INFO L231 Difference]: Finished difference. Result has 77 places, 106 transitions, 605 flow [2023-08-27 01:13:56,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=605, PETRI_PLACES=77, PETRI_TRANSITIONS=106} [2023-08-27 01:13:56,089 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-08-27 01:13:56,089 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 106 transitions, 605 flow [2023-08-27 01:13:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 92.2) internal successors, (2766), 30 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:56,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:56,090 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 01:13:56,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 01:13:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 01:13:56,297 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:13:56,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:13:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1919612281, now seen corresponding path program 2 times [2023-08-27 01:13:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:13:56,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492758711] [2023-08-27 01:13:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:13:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:13:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:13:57,390 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 01:13:57,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:13:57,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492758711] [2023-08-27 01:13:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492758711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:13:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880913827] [2023-08-27 01:13:57,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:13:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:13:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:13:57,401 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:13:57,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 01:13:57,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:13:57,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:13:57,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:13:57,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:13:58,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:13:58,011 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:58,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-27 01:13:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:58,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:13:58,396 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:13:58,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-08-27 01:13:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880913827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:58,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:58,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 27 [2023-08-27 01:13:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901576263] [2023-08-27 01:13:58,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:13:58,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:13:58,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:13:58,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 325 [2023-08-27 01:13:58,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 106 transitions, 605 flow. Second operand has 29 states, 29 states have (on average 88.37931034482759) internal successors, (2563), 29 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 325 [2023-08-27 01:13:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:13:59,931 INFO L124 PetriNetUnfolderBase]: 3228/4482 cut-off events. [2023-08-27 01:13:59,931 INFO L125 PetriNetUnfolderBase]: For 8364/8364 co-relation queries the response was YES. [2023-08-27 01:13:59,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15732 conditions, 4482 events. 3228/4482 cut-off events. For 8364/8364 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18910 event pairs, 602 based on Foata normal form. 2/4484 useless extension candidates. Maximal degree in co-relation 15707. Up to 4087 conditions per place. [2023-08-27 01:13:59,952 INFO L140 encePairwiseOnDemand]: 314/325 looper letters, 124 selfloop transitions, 53 changer transitions 1/178 dead transitions. [2023-08-27 01:13:59,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 178 transitions, 1307 flow [2023-08-27 01:13:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:13:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:13:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1118 transitions. [2023-08-27 01:13:59,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2866666666666667 [2023-08-27 01:13:59,956 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1118 transitions. [2023-08-27 01:13:59,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1118 transitions. [2023-08-27 01:13:59,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:13:59,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1118 transitions. [2023-08-27 01:13:59,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.16666666666667) internal successors, (1118), 12 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:59,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:59,963 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:59,963 INFO L175 Difference]: Start difference. First operand has 77 places, 106 transitions, 605 flow. Second operand 12 states and 1118 transitions. [2023-08-27 01:13:59,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 178 transitions, 1307 flow [2023-08-27 01:13:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 178 transitions, 1297 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:13:59,997 INFO L231 Difference]: Finished difference. Result has 92 places, 133 transitions, 956 flow [2023-08-27 01:13:59,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=956, PETRI_PLACES=92, PETRI_TRANSITIONS=133} [2023-08-27 01:13:59,998 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 54 predicate places. [2023-08-27 01:13:59,998 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 133 transitions, 956 flow [2023-08-27 01:13:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 88.37931034482759) internal successors, (2563), 29 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:59,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:13:59,999 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 01:14:00,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:00,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 01:14:00,205 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:00,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:00,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1967521057, now seen corresponding path program 3 times [2023-08-27 01:14:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321170879] [2023-08-27 01:14:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:01,074 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 01:14:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321170879] [2023-08-27 01:14:01,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321170879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647442575] [2023-08-27 01:14:01,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:14:01,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:01,076 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:01,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 01:14:01,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:14:01,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:01,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:14:01,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:01,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:14:01,557 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:01,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-27 01:14:01,678 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 01:14:01,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:01,895 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:01,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-08-27 01:14:02,332 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 01:14:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647442575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:02,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2023-08-27 01:14:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582523705] [2023-08-27 01:14:02,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:02,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:14:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:14:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:14:02,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 325 [2023-08-27 01:14:02,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 133 transitions, 956 flow. Second operand has 25 states, 25 states have (on average 102.64) internal successors, (2566), 25 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:02,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:02,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 325 [2023-08-27 01:14:02,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:03,325 INFO L124 PetriNetUnfolderBase]: 3249/4543 cut-off events. [2023-08-27 01:14:03,325 INFO L125 PetriNetUnfolderBase]: For 10419/10468 co-relation queries the response was YES. [2023-08-27 01:14:03,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17418 conditions, 4543 events. 3249/4543 cut-off events. For 10419/10468 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20061 event pairs, 759 based on Foata normal form. 50/4577 useless extension candidates. Maximal degree in co-relation 17385. Up to 4188 conditions per place. [2023-08-27 01:14:03,353 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 134 selfloop transitions, 55 changer transitions 1/194 dead transitions. [2023-08-27 01:14:03,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 194 transitions, 1689 flow [2023-08-27 01:14:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:14:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:14:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 980 transitions. [2023-08-27 01:14:03,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335042735042735 [2023-08-27 01:14:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 980 transitions. [2023-08-27 01:14:03,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 980 transitions. [2023-08-27 01:14:03,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:03,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 980 transitions. [2023-08-27 01:14:03,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.88888888888889) internal successors, (980), 9 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:03,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:03,362 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:03,362 INFO L175 Difference]: Start difference. First operand has 92 places, 133 transitions, 956 flow. Second operand 9 states and 980 transitions. [2023-08-27 01:14:03,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 194 transitions, 1689 flow [2023-08-27 01:14:03,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 194 transitions, 1666 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 01:14:03,403 INFO L231 Difference]: Finished difference. Result has 101 places, 151 transitions, 1262 flow [2023-08-27 01:14:03,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1262, PETRI_PLACES=101, PETRI_TRANSITIONS=151} [2023-08-27 01:14:03,404 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-08-27 01:14:03,404 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 151 transitions, 1262 flow [2023-08-27 01:14:03,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.64) internal successors, (2566), 25 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:03,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:03,405 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 01:14:03,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:03,609 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:03,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -940417735, now seen corresponding path program 4 times [2023-08-27 01:14:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134382283] [2023-08-27 01:14:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:04,279 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 01:14:04,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134382283] [2023-08-27 01:14:04,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134382283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716503860] [2023-08-27 01:14:04,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:14:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:04,281 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:04,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 01:14:04,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:14:04,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:04,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:14:04,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:04,672 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:04,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 39 [2023-08-27 01:14:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:04,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:05,212 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:05,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-08-27 01:14:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:05,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716503860] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:05,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:05,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 23 [2023-08-27 01:14:05,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093317938] [2023-08-27 01:14:05,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:05,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:14:05,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:14:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:14:05,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 325 [2023-08-27 01:14:05,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 151 transitions, 1262 flow. Second operand has 25 states, 25 states have (on average 98.76) internal successors, (2469), 25 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:05,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:05,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 325 [2023-08-27 01:14:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:07,687 INFO L124 PetriNetUnfolderBase]: 3994/5610 cut-off events. [2023-08-27 01:14:07,687 INFO L125 PetriNetUnfolderBase]: For 15061/15061 co-relation queries the response was YES. [2023-08-27 01:14:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22941 conditions, 5610 events. 3994/5610 cut-off events. For 15061/15061 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25552 event pairs, 712 based on Foata normal form. 3/5613 useless extension candidates. Maximal degree in co-relation 22904. Up to 4605 conditions per place. [2023-08-27 01:14:07,718 INFO L140 encePairwiseOnDemand]: 310/325 looper letters, 204 selfloop transitions, 161 changer transitions 4/369 dead transitions. [2023-08-27 01:14:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 369 transitions, 3349 flow [2023-08-27 01:14:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-27 01:14:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-27 01:14:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3418 transitions. [2023-08-27 01:14:07,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3186946386946387 [2023-08-27 01:14:07,724 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3418 transitions. [2023-08-27 01:14:07,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3418 transitions. [2023-08-27 01:14:07,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:07,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3418 transitions. [2023-08-27 01:14:07,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 103.57575757575758) internal successors, (3418), 33 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:07,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:07,741 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:07,741 INFO L175 Difference]: Start difference. First operand has 101 places, 151 transitions, 1262 flow. Second operand 33 states and 3418 transitions. [2023-08-27 01:14:07,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 369 transitions, 3349 flow [2023-08-27 01:14:07,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 369 transitions, 3227 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-27 01:14:07,818 INFO L231 Difference]: Finished difference. Result has 143 places, 248 transitions, 2529 flow [2023-08-27 01:14:07,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2529, PETRI_PLACES=143, PETRI_TRANSITIONS=248} [2023-08-27 01:14:07,819 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-08-27 01:14:07,819 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 248 transitions, 2529 flow [2023-08-27 01:14:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.76) internal successors, (2469), 25 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:07,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:07,820 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 01:14:07,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:08,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:08,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash -105411595, now seen corresponding path program 5 times [2023-08-27 01:14:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:08,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375003045] [2023-08-27 01:14:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:08,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:09,104 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 01:14:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375003045] [2023-08-27 01:14:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375003045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715666774] [2023-08-27 01:14:09,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:14:09,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:09,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:09,106 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:09,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 01:14:09,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:09,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:09,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:14:09,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:09,655 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-27 01:14:09,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-08-27 01:14:09,790 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 01:14:09,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:09,975 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:09,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 69 [2023-08-27 01:14:10,472 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 01:14:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715666774] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:10,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:10,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 26 [2023-08-27 01:14:10,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68442638] [2023-08-27 01:14:10,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:10,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 01:14:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 01:14:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-08-27 01:14:10,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 325 [2023-08-27 01:14:10,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 248 transitions, 2529 flow. Second operand has 28 states, 28 states have (on average 88.46428571428571) internal successors, (2477), 28 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:10,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:10,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 325 [2023-08-27 01:14:10,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:12,600 INFO L124 PetriNetUnfolderBase]: 4047/5730 cut-off events. [2023-08-27 01:14:12,600 INFO L125 PetriNetUnfolderBase]: For 32091/32091 co-relation queries the response was YES. [2023-08-27 01:14:12,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27981 conditions, 5730 events. 4047/5730 cut-off events. For 32091/32091 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 26491 event pairs, 1029 based on Foata normal form. 19/5749 useless extension candidates. Maximal degree in co-relation 27929. Up to 5208 conditions per place. [2023-08-27 01:14:12,635 INFO L140 encePairwiseOnDemand]: 313/325 looper letters, 222 selfloop transitions, 130 changer transitions 8/360 dead transitions. [2023-08-27 01:14:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 360 transitions, 4138 flow [2023-08-27 01:14:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:14:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:14:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2140 transitions. [2023-08-27 01:14:12,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2862876254180602 [2023-08-27 01:14:12,639 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2140 transitions. [2023-08-27 01:14:12,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2140 transitions. [2023-08-27 01:14:12,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:12,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2140 transitions. [2023-08-27 01:14:12,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 93.04347826086956) internal successors, (2140), 23 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:12,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:12,649 INFO L175 Difference]: Start difference. First operand has 143 places, 248 transitions, 2529 flow. Second operand 23 states and 2140 transitions. [2023-08-27 01:14:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 360 transitions, 4138 flow [2023-08-27 01:14:12,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 360 transitions, 3624 flow, removed 203 selfloop flow, removed 7 redundant places. [2023-08-27 01:14:12,772 INFO L231 Difference]: Finished difference. Result has 164 places, 289 transitions, 2883 flow [2023-08-27 01:14:12,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2883, PETRI_PLACES=164, PETRI_TRANSITIONS=289} [2023-08-27 01:14:12,772 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 126 predicate places. [2023-08-27 01:14:12,772 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 289 transitions, 2883 flow [2023-08-27 01:14:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 88.46428571428571) internal successors, (2477), 28 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:12,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:12,773 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 01:14:12,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:12,974 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:12,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash 168790323, now seen corresponding path program 6 times [2023-08-27 01:14:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923489312] [2023-08-27 01:14:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:13,877 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 01:14:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923489312] [2023-08-27 01:14:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923489312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902432753] [2023-08-27 01:14:13,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:14:13,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:13,885 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:13,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 01:14:14,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:14:14,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:14,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:14:14,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:14,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2023-08-27 01:14:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:14,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:14,720 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:14,720 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 69 [2023-08-27 01:14:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902432753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:15,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 25 [2023-08-27 01:14:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672458319] [2023-08-27 01:14:15,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:15,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:14:15,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:14:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-08-27 01:14:15,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 325 [2023-08-27 01:14:15,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 289 transitions, 2883 flow. Second operand has 27 states, 27 states have (on average 88.25925925925925) internal successors, (2383), 27 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:15,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:15,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 325 [2023-08-27 01:14:15,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:16,783 INFO L124 PetriNetUnfolderBase]: 4345/6190 cut-off events. [2023-08-27 01:14:16,783 INFO L125 PetriNetUnfolderBase]: For 35347/35347 co-relation queries the response was YES. [2023-08-27 01:14:16,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29873 conditions, 6190 events. 4345/6190 cut-off events. For 35347/35347 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29442 event pairs, 1064 based on Foata normal form. 2/6180 useless extension candidates. Maximal degree in co-relation 29816. Up to 5591 conditions per place. [2023-08-27 01:14:16,817 INFO L140 encePairwiseOnDemand]: 313/325 looper letters, 270 selfloop transitions, 125 changer transitions 9/404 dead transitions. [2023-08-27 01:14:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 404 transitions, 4505 flow [2023-08-27 01:14:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:14:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:14:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1501 transitions. [2023-08-27 01:14:16,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28865384615384615 [2023-08-27 01:14:16,820 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1501 transitions. [2023-08-27 01:14:16,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1501 transitions. [2023-08-27 01:14:16,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:16,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1501 transitions. [2023-08-27 01:14:16,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 93.8125) internal successors, (1501), 16 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:16,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:16,829 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:16,829 INFO L175 Difference]: Start difference. First operand has 164 places, 289 transitions, 2883 flow. Second operand 16 states and 1501 transitions. [2023-08-27 01:14:16,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 404 transitions, 4505 flow [2023-08-27 01:14:16,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 404 transitions, 4293 flow, removed 53 selfloop flow, removed 8 redundant places. [2023-08-27 01:14:16,942 INFO L231 Difference]: Finished difference. Result has 177 places, 325 transitions, 3330 flow [2023-08-27 01:14:16,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3330, PETRI_PLACES=177, PETRI_TRANSITIONS=325} [2023-08-27 01:14:16,943 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 139 predicate places. [2023-08-27 01:14:16,943 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 325 transitions, 3330 flow [2023-08-27 01:14:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 88.25925925925925) internal successors, (2383), 27 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:16,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:16,943 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 01:14:16,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:17,148 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:17,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1223011359, now seen corresponding path program 7 times [2023-08-27 01:14:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170557852] [2023-08-27 01:14:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:17,751 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 01:14:17,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170557852] [2023-08-27 01:14:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170557852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399288351] [2023-08-27 01:14:17,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:14:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:17,753 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:17,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 01:14:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:17,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:14:17,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:18,316 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-27 01:14:18,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-08-27 01:14:18,446 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 01:14:18,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:18,628 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:18,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 69 [2023-08-27 01:14:18,950 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 01:14:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399288351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:18,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:18,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-27 01:14:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311316825] [2023-08-27 01:14:18,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:18,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:14:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:14:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:14:18,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 325 [2023-08-27 01:14:18,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 325 transitions, 3330 flow. Second operand has 25 states, 25 states have (on average 98.56) internal successors, (2464), 25 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:18,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:18,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 325 [2023-08-27 01:14:18,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:20,546 INFO L124 PetriNetUnfolderBase]: 4451/6366 cut-off events. [2023-08-27 01:14:20,547 INFO L125 PetriNetUnfolderBase]: For 40054/40054 co-relation queries the response was YES. [2023-08-27 01:14:20,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31862 conditions, 6366 events. 4451/6366 cut-off events. For 40054/40054 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30715 event pairs, 1136 based on Foata normal form. 2/6356 useless extension candidates. Maximal degree in co-relation 31799. Up to 5826 conditions per place. [2023-08-27 01:14:20,597 INFO L140 encePairwiseOnDemand]: 313/325 looper letters, 260 selfloop transitions, 129 changer transitions 2/391 dead transitions. [2023-08-27 01:14:20,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 391 transitions, 4573 flow [2023-08-27 01:14:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 01:14:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 01:14:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2052 transitions. [2023-08-27 01:14:20,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3156923076923077 [2023-08-27 01:14:20,600 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2052 transitions. [2023-08-27 01:14:20,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2052 transitions. [2023-08-27 01:14:20,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:20,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2052 transitions. [2023-08-27 01:14:20,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 102.6) internal successors, (2052), 20 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:20,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:20,608 INFO L175 Difference]: Start difference. First operand has 177 places, 325 transitions, 3330 flow. Second operand 20 states and 2052 transitions. [2023-08-27 01:14:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 391 transitions, 4573 flow [2023-08-27 01:14:20,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 391 transitions, 4338 flow, removed 55 selfloop flow, removed 7 redundant places. [2023-08-27 01:14:20,773 INFO L231 Difference]: Finished difference. Result has 192 places, 339 transitions, 3590 flow [2023-08-27 01:14:20,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3590, PETRI_PLACES=192, PETRI_TRANSITIONS=339} [2023-08-27 01:14:20,775 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2023-08-27 01:14:20,775 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 339 transitions, 3590 flow [2023-08-27 01:14:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.56) internal successors, (2464), 25 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:20,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:20,776 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 01:14:20,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:20,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:20,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash -127664457, now seen corresponding path program 8 times [2023-08-27 01:14:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132607699] [2023-08-27 01:14:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:21,880 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 01:14:21,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:21,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132607699] [2023-08-27 01:14:21,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132607699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:21,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832723635] [2023-08-27 01:14:21,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:14:21,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:21,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:21,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:21,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 01:14:22,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:22,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:22,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:14:22,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:22,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2023-08-27 01:14:22,507 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 01:14:22,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:22,833 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:22,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 69 [2023-08-27 01:14:23,153 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 01:14:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832723635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:23,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:23,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 24 [2023-08-27 01:14:23,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137120257] [2023-08-27 01:14:23,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:23,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:14:23,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:23,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:14:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:14:23,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 325 [2023-08-27 01:14:23,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 339 transitions, 3590 flow. Second operand has 26 states, 26 states have (on average 88.34615384615384) internal successors, (2297), 26 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:23,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:23,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 325 [2023-08-27 01:14:23,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:25,201 INFO L124 PetriNetUnfolderBase]: 4653/6694 cut-off events. [2023-08-27 01:14:25,201 INFO L125 PetriNetUnfolderBase]: For 46337/46337 co-relation queries the response was YES. [2023-08-27 01:14:25,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34639 conditions, 6694 events. 4653/6694 cut-off events. For 46337/46337 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33082 event pairs, 1073 based on Foata normal form. 2/6684 useless extension candidates. Maximal degree in co-relation 34572. Up to 5738 conditions per place. [2023-08-27 01:14:25,245 INFO L140 encePairwiseOnDemand]: 311/325 looper letters, 281 selfloop transitions, 213 changer transitions 2/496 dead transitions. [2023-08-27 01:14:25,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 496 transitions, 5948 flow [2023-08-27 01:14:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:14:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:14:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2163 transitions. [2023-08-27 01:14:25,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2893645484949833 [2023-08-27 01:14:25,249 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2163 transitions. [2023-08-27 01:14:25,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2163 transitions. [2023-08-27 01:14:25,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:25,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2163 transitions. [2023-08-27 01:14:25,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.04347826086956) internal successors, (2163), 23 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:25,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:25,257 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:25,257 INFO L175 Difference]: Start difference. First operand has 192 places, 339 transitions, 3590 flow. Second operand 23 states and 2163 transitions. [2023-08-27 01:14:25,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 496 transitions, 5948 flow [2023-08-27 01:14:25,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 496 transitions, 5759 flow, removed 36 selfloop flow, removed 11 redundant places. [2023-08-27 01:14:25,420 INFO L231 Difference]: Finished difference. Result has 209 places, 402 transitions, 4806 flow [2023-08-27 01:14:25,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4806, PETRI_PLACES=209, PETRI_TRANSITIONS=402} [2023-08-27 01:14:25,420 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 171 predicate places. [2023-08-27 01:14:25,420 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 402 transitions, 4806 flow [2023-08-27 01:14:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 88.34615384615384) internal successors, (2297), 26 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:25,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:25,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:25,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:25,621 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:25,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1080159008, now seen corresponding path program 9 times [2023-08-27 01:14:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:25,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305852509] [2023-08-27 01:14:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:25,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305852509] [2023-08-27 01:14:25,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305852509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244425219] [2023-08-27 01:14:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:14:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:25,744 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:25,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 01:14:25,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:14:25,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:25,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:14:25,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:26,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244425219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:26,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 01:14:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912089207] [2023-08-27 01:14:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:14:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:14:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:14:26,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 325 [2023-08-27 01:14:26,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 402 transitions, 4806 flow. Second operand has 14 states, 14 states have (on average 122.85714285714286) internal successors, (1720), 14 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:26,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:26,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 325 [2023-08-27 01:14:26,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:27,039 INFO L124 PetriNetUnfolderBase]: 3754/5544 cut-off events. [2023-08-27 01:14:27,040 INFO L125 PetriNetUnfolderBase]: For 45907/46120 co-relation queries the response was YES. [2023-08-27 01:14:27,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30287 conditions, 5544 events. 3754/5544 cut-off events. For 45907/46120 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29153 event pairs, 1317 based on Foata normal form. 383/5859 useless extension candidates. Maximal degree in co-relation 30220. Up to 3551 conditions per place. [2023-08-27 01:14:27,086 INFO L140 encePairwiseOnDemand]: 319/325 looper letters, 299 selfloop transitions, 39 changer transitions 43/410 dead transitions. [2023-08-27 01:14:27,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 410 transitions, 5412 flow [2023-08-27 01:14:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:14:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:14:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 903 transitions. [2023-08-27 01:14:27,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39692307692307693 [2023-08-27 01:14:27,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 903 transitions. [2023-08-27 01:14:27,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 903 transitions. [2023-08-27 01:14:27,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:27,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 903 transitions. [2023-08-27 01:14:27,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:27,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:27,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:27,091 INFO L175 Difference]: Start difference. First operand has 209 places, 402 transitions, 4806 flow. Second operand 7 states and 903 transitions. [2023-08-27 01:14:27,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 410 transitions, 5412 flow [2023-08-27 01:14:27,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 410 transitions, 5124 flow, removed 91 selfloop flow, removed 13 redundant places. [2023-08-27 01:14:27,259 INFO L231 Difference]: Finished difference. Result has 202 places, 314 transitions, 3626 flow [2023-08-27 01:14:27,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3626, PETRI_PLACES=202, PETRI_TRANSITIONS=314} [2023-08-27 01:14:27,260 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 164 predicate places. [2023-08-27 01:14:27,260 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 314 transitions, 3626 flow [2023-08-27 01:14:27,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 122.85714285714286) internal successors, (1720), 14 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:27,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:27,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:27,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-27 01:14:27,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 01:14:27,461 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:27,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash -589416233, now seen corresponding path program 10 times [2023-08-27 01:14:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572088837] [2023-08-27 01:14:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:27,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572088837] [2023-08-27 01:14:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572088837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556998635] [2023-08-27 01:14:27,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:14:27,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:27,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:27,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 01:14:27,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:14:27,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:27,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:14:27,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:27,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556998635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:27,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:27,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 01:14:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347552450] [2023-08-27 01:14:27,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:14:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:14:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:14:27,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 325 [2023-08-27 01:14:27,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 314 transitions, 3626 flow. Second operand has 14 states, 14 states have (on average 126.35714285714286) internal successors, (1769), 14 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:27,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:27,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 325 [2023-08-27 01:14:27,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:28,708 INFO L124 PetriNetUnfolderBase]: 3270/4753 cut-off events. [2023-08-27 01:14:28,708 INFO L125 PetriNetUnfolderBase]: For 49704/50206 co-relation queries the response was YES. [2023-08-27 01:14:28,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27325 conditions, 4753 events. 3270/4753 cut-off events. For 49704/50206 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 24272 event pairs, 989 based on Foata normal form. 471/5097 useless extension candidates. Maximal degree in co-relation 27256. Up to 2016 conditions per place. [2023-08-27 01:14:28,748 INFO L140 encePairwiseOnDemand]: 319/325 looper letters, 315 selfloop transitions, 71 changer transitions 2/421 dead transitions. [2023-08-27 01:14:28,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 421 transitions, 5396 flow [2023-08-27 01:14:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:14:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:14:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2023-08-27 01:14:28,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065384615384615 [2023-08-27 01:14:28,754 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2023-08-27 01:14:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2023-08-27 01:14:28,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:28,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2023-08-27 01:14:28,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:28,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:28,757 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:28,757 INFO L175 Difference]: Start difference. First operand has 202 places, 314 transitions, 3626 flow. Second operand 8 states and 1057 transitions. [2023-08-27 01:14:28,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 421 transitions, 5396 flow [2023-08-27 01:14:28,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 421 transitions, 5224 flow, removed 48 selfloop flow, removed 9 redundant places. [2023-08-27 01:14:28,876 INFO L231 Difference]: Finished difference. Result has 199 places, 312 transitions, 3604 flow [2023-08-27 01:14:28,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3462, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3604, PETRI_PLACES=199, PETRI_TRANSITIONS=312} [2023-08-27 01:14:28,877 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 161 predicate places. [2023-08-27 01:14:28,877 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 312 transitions, 3604 flow [2023-08-27 01:14:28,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.35714285714286) internal successors, (1769), 14 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:28,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:28,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:28,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 01:14:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:14:29,078 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:29,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1395929252, now seen corresponding path program 1 times [2023-08-27 01:14:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:29,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210604117] [2023-08-27 01:14:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:29,175 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 01:14:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210604117] [2023-08-27 01:14:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210604117] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522474223] [2023-08-27 01:14:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:29,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:29,177 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:29,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 01:14:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:29,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:14:29,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:14:29,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:29,434 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 01:14:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522474223] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:29,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:29,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 01:14:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487913347] [2023-08-27 01:14:29,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:14:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:14:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:14:29,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:29,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 312 transitions, 3604 flow. Second operand has 16 states, 16 states have (on average 118.375) internal successors, (1894), 16 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:29,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:29,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:29,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:30,180 INFO L124 PetriNetUnfolderBase]: 3410/4976 cut-off events. [2023-08-27 01:14:30,181 INFO L125 PetriNetUnfolderBase]: For 37683/37758 co-relation queries the response was YES. [2023-08-27 01:14:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26998 conditions, 4976 events. 3410/4976 cut-off events. For 37683/37758 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24413 event pairs, 1232 based on Foata normal form. 94/5041 useless extension candidates. Maximal degree in co-relation 26931. Up to 3050 conditions per place. [2023-08-27 01:14:30,245 INFO L140 encePairwiseOnDemand]: 317/325 looper letters, 304 selfloop transitions, 45 changer transitions 31/396 dead transitions. [2023-08-27 01:14:30,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 396 transitions, 4939 flow [2023-08-27 01:14:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:14:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:14:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1255 transitions. [2023-08-27 01:14:30,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861538461538462 [2023-08-27 01:14:30,247 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1255 transitions. [2023-08-27 01:14:30,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1255 transitions. [2023-08-27 01:14:30,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:30,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1255 transitions. [2023-08-27 01:14:30,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.5) internal successors, (1255), 10 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:30,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:30,251 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:30,251 INFO L175 Difference]: Start difference. First operand has 199 places, 312 transitions, 3604 flow. Second operand 10 states and 1255 transitions. [2023-08-27 01:14:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 396 transitions, 4939 flow [2023-08-27 01:14:30,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 396 transitions, 4750 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-27 01:14:30,394 INFO L231 Difference]: Finished difference. Result has 206 places, 318 transitions, 3679 flow [2023-08-27 01:14:30,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3679, PETRI_PLACES=206, PETRI_TRANSITIONS=318} [2023-08-27 01:14:30,395 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 168 predicate places. [2023-08-27 01:14:30,395 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 318 transitions, 3679 flow [2023-08-27 01:14:30,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 118.375) internal successors, (1894), 16 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:30,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:30,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:30,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:30,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:14:30,601 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:30,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -386359090, now seen corresponding path program 2 times [2023-08-27 01:14:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98762851] [2023-08-27 01:14:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98762851] [2023-08-27 01:14:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98762851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:30,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158622138] [2023-08-27 01:14:30,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:14:30,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:30,717 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:30,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:14:30,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:30,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:30,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 01:14:30,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:14:30,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:14:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158622138] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:31,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-08-27 01:14:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102060508] [2023-08-27 01:14:31,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:31,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:14:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:14:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:14:31,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:31,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 318 transitions, 3679 flow. Second operand has 15 states, 15 states have (on average 119.73333333333333) internal successors, (1796), 15 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:31,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:31,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:31,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:31,614 INFO L124 PetriNetUnfolderBase]: 2610/3783 cut-off events. [2023-08-27 01:14:31,615 INFO L125 PetriNetUnfolderBase]: For 32999/33067 co-relation queries the response was YES. [2023-08-27 01:14:31,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21372 conditions, 3783 events. 2610/3783 cut-off events. For 32999/33067 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17299 event pairs, 1055 based on Foata normal form. 185/3942 useless extension candidates. Maximal degree in co-relation 21301. Up to 3050 conditions per place. [2023-08-27 01:14:31,647 INFO L140 encePairwiseOnDemand]: 318/325 looper letters, 202 selfloop transitions, 3 changer transitions 105/320 dead transitions. [2023-08-27 01:14:31,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 320 transitions, 4097 flow [2023-08-27 01:14:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:14:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:14:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 991 transitions. [2023-08-27 01:14:31,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811538461538462 [2023-08-27 01:14:31,649 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 991 transitions. [2023-08-27 01:14:31,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 991 transitions. [2023-08-27 01:14:31,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:31,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 991 transitions. [2023-08-27 01:14:31,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.875) internal successors, (991), 8 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:31,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:31,653 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:31,653 INFO L175 Difference]: Start difference. First operand has 206 places, 318 transitions, 3679 flow. Second operand 8 states and 991 transitions. [2023-08-27 01:14:31,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 320 transitions, 4097 flow [2023-08-27 01:14:31,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 320 transitions, 3944 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-08-27 01:14:31,765 INFO L231 Difference]: Finished difference. Result has 198 places, 215 transitions, 2157 flow [2023-08-27 01:14:31,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2157, PETRI_PLACES=198, PETRI_TRANSITIONS=215} [2023-08-27 01:14:31,766 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 160 predicate places. [2023-08-27 01:14:31,766 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 215 transitions, 2157 flow [2023-08-27 01:14:31,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 119.73333333333333) internal successors, (1796), 15 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:31,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:31,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:31,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:31,971 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:31,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1958551780, now seen corresponding path program 11 times [2023-08-27 01:14:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:31,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132389534] [2023-08-27 01:14:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:32,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132389534] [2023-08-27 01:14:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132389534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286780353] [2023-08-27 01:14:32,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:14:32,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:32,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:32,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:14:32,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:32,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:32,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:14:32,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:32,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286780353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:32,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-08-27 01:14:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904788823] [2023-08-27 01:14:32,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:14:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:14:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:14:32,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 325 [2023-08-27 01:14:32,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 2157 flow. Second operand has 18 states, 18 states have (on average 114.38888888888889) internal successors, (2059), 18 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:32,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:32,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 325 [2023-08-27 01:14:32,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:33,985 INFO L124 PetriNetUnfolderBase]: 4161/5625 cut-off events. [2023-08-27 01:14:33,985 INFO L125 PetriNetUnfolderBase]: For 53552/53552 co-relation queries the response was YES. [2023-08-27 01:14:34,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30491 conditions, 5625 events. 4161/5625 cut-off events. For 53552/53552 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23410 event pairs, 381 based on Foata normal form. 22/5647 useless extension candidates. Maximal degree in co-relation 30427. Up to 1180 conditions per place. [2023-08-27 01:14:34,035 INFO L140 encePairwiseOnDemand]: 313/325 looper letters, 427 selfloop transitions, 341 changer transitions 0/768 dead transitions. [2023-08-27 01:14:34,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 768 transitions, 7775 flow [2023-08-27 01:14:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 01:14:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 01:14:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5560 transitions. [2023-08-27 01:14:34,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639934533551555 [2023-08-27 01:14:34,040 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5560 transitions. [2023-08-27 01:14:34,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5560 transitions. [2023-08-27 01:14:34,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:34,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5560 transitions. [2023-08-27 01:14:34,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 118.29787234042553) internal successors, (5560), 47 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:34,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 325.0) internal successors, (15600), 48 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:34,058 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 325.0) internal successors, (15600), 48 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:34,058 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 2157 flow. Second operand 47 states and 5560 transitions. [2023-08-27 01:14:34,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 768 transitions, 7775 flow [2023-08-27 01:14:34,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 768 transitions, 7039 flow, removed 259 selfloop flow, removed 20 redundant places. [2023-08-27 01:14:34,214 INFO L231 Difference]: Finished difference. Result has 198 places, 434 transitions, 4810 flow [2023-08-27 01:14:34,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4810, PETRI_PLACES=198, PETRI_TRANSITIONS=434} [2023-08-27 01:14:34,215 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 160 predicate places. [2023-08-27 01:14:34,215 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 434 transitions, 4810 flow [2023-08-27 01:14:34,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 114.38888888888889) internal successors, (2059), 18 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:34,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:34,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:34,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 01:14:34,420 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:34,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1537467866, now seen corresponding path program 12 times [2023-08-27 01:14:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902784783] [2023-08-27 01:14:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902784783] [2023-08-27 01:14:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902784783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878163694] [2023-08-27 01:14:34,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:14:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:34,541 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:34,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:14:34,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:14:34,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:34,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:34,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:34,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:14:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878163694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:34,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:34,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 01:14:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116763377] [2023-08-27 01:14:34,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:14:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:14:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:14:34,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:34,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 434 transitions, 4810 flow. Second operand has 18 states, 18 states have (on average 118.44444444444444) internal successors, (2132), 18 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:34,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:34,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:34,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:35,635 INFO L124 PetriNetUnfolderBase]: 4055/5499 cut-off events. [2023-08-27 01:14:35,636 INFO L125 PetriNetUnfolderBase]: For 47706/47743 co-relation queries the response was YES. [2023-08-27 01:14:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30170 conditions, 5499 events. 4055/5499 cut-off events. For 47706/47743 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23033 event pairs, 1122 based on Foata normal form. 53/5532 useless extension candidates. Maximal degree in co-relation 30111. Up to 3912 conditions per place. [2023-08-27 01:14:35,683 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 403 selfloop transitions, 91 changer transitions 0/519 dead transitions. [2023-08-27 01:14:35,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 519 transitions, 6482 flow [2023-08-27 01:14:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:14:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:14:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1228 transitions. [2023-08-27 01:14:35,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37784615384615383 [2023-08-27 01:14:35,685 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1228 transitions. [2023-08-27 01:14:35,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1228 transitions. [2023-08-27 01:14:35,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:35,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1228 transitions. [2023-08-27 01:14:35,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.8) internal successors, (1228), 10 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:35,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:35,688 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:35,688 INFO L175 Difference]: Start difference. First operand has 198 places, 434 transitions, 4810 flow. Second operand 10 states and 1228 transitions. [2023-08-27 01:14:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 519 transitions, 6482 flow [2023-08-27 01:14:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 519 transitions, 5170 flow, removed 463 selfloop flow, removed 13 redundant places. [2023-08-27 01:14:36,086 INFO L231 Difference]: Finished difference. Result has 191 places, 426 transitions, 3891 flow [2023-08-27 01:14:36,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3891, PETRI_PLACES=191, PETRI_TRANSITIONS=426} [2023-08-27 01:14:36,086 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 153 predicate places. [2023-08-27 01:14:36,087 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 426 transitions, 3891 flow [2023-08-27 01:14:36,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 118.44444444444444) internal successors, (2132), 18 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:36,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:36,087 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:36,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:36,288 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:36,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1382354912, now seen corresponding path program 13 times [2023-08-27 01:14:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126202812] [2023-08-27 01:14:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:36,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126202812] [2023-08-27 01:14:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126202812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:36,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995065761] [2023-08-27 01:14:36,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:14:36,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:36,403 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:36,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:14:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:36,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:36,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:36,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:36,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995065761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:36,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:36,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:14:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606267127] [2023-08-27 01:14:36,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:14:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:14:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-27 01:14:36,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:36,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 426 transitions, 3891 flow. Second operand has 21 states, 21 states have (on average 117.85714285714286) internal successors, (2475), 21 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:36,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:36,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:37,768 INFO L124 PetriNetUnfolderBase]: 4196/5710 cut-off events. [2023-08-27 01:14:37,768 INFO L125 PetriNetUnfolderBase]: For 19976/20023 co-relation queries the response was YES. [2023-08-27 01:14:37,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25344 conditions, 5710 events. 4196/5710 cut-off events. For 19976/20023 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24200 event pairs, 1350 based on Foata normal form. 58/5744 useless extension candidates. Maximal degree in co-relation 25291. Up to 4680 conditions per place. [2023-08-27 01:14:37,809 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 399 selfloop transitions, 132 changer transitions 0/555 dead transitions. [2023-08-27 01:14:37,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 555 transitions, 5761 flow [2023-08-27 01:14:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:14:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:14:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1597 transitions. [2023-08-27 01:14:37,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3779881656804734 [2023-08-27 01:14:37,813 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1597 transitions. [2023-08-27 01:14:37,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1597 transitions. [2023-08-27 01:14:37,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:37,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1597 transitions. [2023-08-27 01:14:37,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.84615384615384) internal successors, (1597), 13 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:37,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:37,819 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:37,819 INFO L175 Difference]: Start difference. First operand has 191 places, 426 transitions, 3891 flow. Second operand 13 states and 1597 transitions. [2023-08-27 01:14:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 555 transitions, 5761 flow [2023-08-27 01:14:37,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 555 transitions, 5606 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-27 01:14:37,925 INFO L231 Difference]: Finished difference. Result has 196 places, 454 transitions, 4410 flow [2023-08-27 01:14:37,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4410, PETRI_PLACES=196, PETRI_TRANSITIONS=454} [2023-08-27 01:14:37,926 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 158 predicate places. [2023-08-27 01:14:37,926 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 454 transitions, 4410 flow [2023-08-27 01:14:37,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 117.85714285714286) internal successors, (2475), 21 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:37,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:37,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:37,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:38,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 01:14:38,128 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:38,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1696599778, now seen corresponding path program 14 times [2023-08-27 01:14:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:38,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535344591] [2023-08-27 01:14:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535344591] [2023-08-27 01:14:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535344591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844649595] [2023-08-27 01:14:38,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:14:38,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:38,266 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:38,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:14:38,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:38,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:38,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:38,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:38,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844649595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:38,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:14:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438171353] [2023-08-27 01:14:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:14:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:14:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:14:38,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:38,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 454 transitions, 4410 flow. Second operand has 19 states, 19 states have (on average 118.05263157894737) internal successors, (2243), 19 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:38,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:38,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:38,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:39,462 INFO L124 PetriNetUnfolderBase]: 4215/5737 cut-off events. [2023-08-27 01:14:39,462 INFO L125 PetriNetUnfolderBase]: For 20708/20758 co-relation queries the response was YES. [2023-08-27 01:14:39,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26327 conditions, 5737 events. 4215/5737 cut-off events. For 20708/20758 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24382 event pairs, 1418 based on Foata normal form. 59/5767 useless extension candidates. Maximal degree in co-relation 26274. Up to 4908 conditions per place. [2023-08-27 01:14:39,497 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 394 selfloop transitions, 99 changer transitions 0/517 dead transitions. [2023-08-27 01:14:39,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 517 transitions, 5726 flow [2023-08-27 01:14:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:14:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:14:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1222 transitions. [2023-08-27 01:14:39,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376 [2023-08-27 01:14:39,499 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1222 transitions. [2023-08-27 01:14:39,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1222 transitions. [2023-08-27 01:14:39,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:39,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1222 transitions. [2023-08-27 01:14:39,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.2) internal successors, (1222), 10 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:39,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:39,503 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:39,504 INFO L175 Difference]: Start difference. First operand has 196 places, 454 transitions, 4410 flow. Second operand 10 states and 1222 transitions. [2023-08-27 01:14:39,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 517 transitions, 5726 flow [2023-08-27 01:14:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 517 transitions, 5502 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-27 01:14:39,650 INFO L231 Difference]: Finished difference. Result has 197 places, 456 transitions, 4442 flow [2023-08-27 01:14:39,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4442, PETRI_PLACES=197, PETRI_TRANSITIONS=456} [2023-08-27 01:14:39,650 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 159 predicate places. [2023-08-27 01:14:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 456 transitions, 4442 flow [2023-08-27 01:14:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.05263157894737) internal successors, (2243), 19 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:39,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:39,651 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:39,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:39,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:39,856 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:39,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2055081624, now seen corresponding path program 15 times [2023-08-27 01:14:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:39,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478937459] [2023-08-27 01:14:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:39,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478937459] [2023-08-27 01:14:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478937459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731358612] [2023-08-27 01:14:39,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:14:39,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:39,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:39,979 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:39,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:14:40,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:14:40,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:40,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:40,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:40,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731358612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:40,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:40,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 01:14:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136673981] [2023-08-27 01:14:40,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:40,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:14:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:14:40,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:14:40,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:40,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 456 transitions, 4442 flow. Second operand has 20 states, 20 states have (on average 118.0) internal successors, (2360), 20 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:40,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:40,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:40,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:41,339 INFO L124 PetriNetUnfolderBase]: 4189/5687 cut-off events. [2023-08-27 01:14:41,339 INFO L125 PetriNetUnfolderBase]: For 19304/19351 co-relation queries the response was YES. [2023-08-27 01:14:41,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26110 conditions, 5687 events. 4189/5687 cut-off events. For 19304/19351 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23951 event pairs, 1348 based on Foata normal form. 62/5721 useless extension candidates. Maximal degree in co-relation 26059. Up to 4704 conditions per place. [2023-08-27 01:14:41,372 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 406 selfloop transitions, 130 changer transitions 0/559 dead transitions. [2023-08-27 01:14:41,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 559 transitions, 5988 flow [2023-08-27 01:14:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:14:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:14:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1719 transitions. [2023-08-27 01:14:41,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778021978021978 [2023-08-27 01:14:41,379 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1719 transitions. [2023-08-27 01:14:41,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1719 transitions. [2023-08-27 01:14:41,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:41,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1719 transitions. [2023-08-27 01:14:41,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 122.78571428571429) internal successors, (1719), 14 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:41,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:41,384 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:41,384 INFO L175 Difference]: Start difference. First operand has 197 places, 456 transitions, 4442 flow. Second operand 14 states and 1719 transitions. [2023-08-27 01:14:41,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 559 transitions, 5988 flow [2023-08-27 01:14:41,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 559 transitions, 5783 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-08-27 01:14:41,469 INFO L231 Difference]: Finished difference. Result has 198 places, 448 transitions, 4466 flow [2023-08-27 01:14:41,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4466, PETRI_PLACES=198, PETRI_TRANSITIONS=448} [2023-08-27 01:14:41,469 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 160 predicate places. [2023-08-27 01:14:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 448 transitions, 4466 flow [2023-08-27 01:14:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 118.0) internal successors, (2360), 20 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:41,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:41,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:41,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:41,670 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:41,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1737305420, now seen corresponding path program 16 times [2023-08-27 01:14:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121852360] [2023-08-27 01:14:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121852360] [2023-08-27 01:14:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121852360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225409160] [2023-08-27 01:14:41,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:14:41,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:41,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:41,789 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:41,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:14:41,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:14:41,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:41,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:41,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:41,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225409160] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:42,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:42,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:14:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694806219] [2023-08-27 01:14:42,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:42,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:14:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:14:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:14:42,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:42,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 448 transitions, 4466 flow. Second operand has 19 states, 19 states have (on average 118.15789473684211) internal successors, (2245), 19 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:42,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:42,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:42,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:42,893 INFO L124 PetriNetUnfolderBase]: 4413/6015 cut-off events. [2023-08-27 01:14:42,893 INFO L125 PetriNetUnfolderBase]: For 22163/22205 co-relation queries the response was YES. [2023-08-27 01:14:42,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27526 conditions, 6015 events. 4413/6015 cut-off events. For 22163/22205 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25761 event pairs, 877 based on Foata normal form. 54/6038 useless extension candidates. Maximal degree in co-relation 27475. Up to 2907 conditions per place. [2023-08-27 01:14:42,939 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 321 selfloop transitions, 184 changer transitions 0/528 dead transitions. [2023-08-27 01:14:42,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 528 transitions, 5896 flow [2023-08-27 01:14:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:14:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:14:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2023-08-27 01:14:42,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37753846153846154 [2023-08-27 01:14:42,940 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2023-08-27 01:14:42,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2023-08-27 01:14:42,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:42,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2023-08-27 01:14:42,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:42,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:42,944 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:42,944 INFO L175 Difference]: Start difference. First operand has 198 places, 448 transitions, 4466 flow. Second operand 10 states and 1227 transitions. [2023-08-27 01:14:42,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 528 transitions, 5896 flow [2023-08-27 01:14:43,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 528 transitions, 5581 flow, removed 17 selfloop flow, removed 12 redundant places. [2023-08-27 01:14:43,039 INFO L231 Difference]: Finished difference. Result has 196 places, 452 transitions, 4590 flow [2023-08-27 01:14:43,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4590, PETRI_PLACES=196, PETRI_TRANSITIONS=452} [2023-08-27 01:14:43,040 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 158 predicate places. [2023-08-27 01:14:43,040 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 452 transitions, 4590 flow [2023-08-27 01:14:43,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.15789473684211) internal successors, (2245), 19 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:43,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:43,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:43,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:43,241 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:43,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash 372396792, now seen corresponding path program 17 times [2023-08-27 01:14:43,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:43,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046788503] [2023-08-27 01:14:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:43,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046788503] [2023-08-27 01:14:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046788503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:43,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212349594] [2023-08-27 01:14:43,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:14:43,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:43,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:43,372 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:43,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 01:14:43,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:14:43,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:43,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:14:43,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:43,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212349594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:43,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:43,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2023-08-27 01:14:43,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028170157] [2023-08-27 01:14:43,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:43,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:14:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:14:43,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:14:43,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 325 [2023-08-27 01:14:43,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 452 transitions, 4590 flow. Second operand has 19 states, 19 states have (on average 114.3157894736842) internal successors, (2172), 19 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:43,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:43,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 325 [2023-08-27 01:14:43,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:45,335 INFO L124 PetriNetUnfolderBase]: 4465/6061 cut-off events. [2023-08-27 01:14:45,335 INFO L125 PetriNetUnfolderBase]: For 21038/21038 co-relation queries the response was YES. [2023-08-27 01:14:45,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27948 conditions, 6061 events. 4465/6061 cut-off events. For 21038/21038 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25792 event pairs, 381 based on Foata normal form. 20/6081 useless extension candidates. Maximal degree in co-relation 27897. Up to 1210 conditions per place. [2023-08-27 01:14:45,376 INFO L140 encePairwiseOnDemand]: 313/325 looper letters, 404 selfloop transitions, 345 changer transitions 0/749 dead transitions. [2023-08-27 01:14:45,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 749 transitions, 7636 flow [2023-08-27 01:14:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-27 01:14:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-27 01:14:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4858 transitions. [2023-08-27 01:14:45,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364577861163227 [2023-08-27 01:14:45,382 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4858 transitions. [2023-08-27 01:14:45,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4858 transitions. [2023-08-27 01:14:45,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:45,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4858 transitions. [2023-08-27 01:14:45,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 118.48780487804878) internal successors, (4858), 41 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:45,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 325.0) internal successors, (13650), 42 states have internal predecessors, (13650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:45,399 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 325.0) internal successors, (13650), 42 states have internal predecessors, (13650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:45,399 INFO L175 Difference]: Start difference. First operand has 196 places, 452 transitions, 4590 flow. Second operand 41 states and 4858 transitions. [2023-08-27 01:14:45,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 749 transitions, 7636 flow [2023-08-27 01:14:45,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 749 transitions, 7296 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-27 01:14:45,532 INFO L231 Difference]: Finished difference. Result has 226 places, 448 transitions, 4893 flow [2023-08-27 01:14:45,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4893, PETRI_PLACES=226, PETRI_TRANSITIONS=448} [2023-08-27 01:14:45,533 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 188 predicate places. [2023-08-27 01:14:45,533 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 448 transitions, 4893 flow [2023-08-27 01:14:45,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 114.3157894736842) internal successors, (2172), 19 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:45,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:45,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:14:45,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 01:14:45,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 01:14:45,734 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:45,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -796888968, now seen corresponding path program 18 times [2023-08-27 01:14:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530091856] [2023-08-27 01:14:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:45,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530091856] [2023-08-27 01:14:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530091856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134508149] [2023-08-27 01:14:45,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:14:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:45,861 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:45,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 01:14:45,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:14:45,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:45,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:14:45,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:46,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:14:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134508149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:14:46,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:14:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:14:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841458924] [2023-08-27 01:14:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:14:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:14:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:14:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:14:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:14:46,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-27 01:14:46,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 448 transitions, 4893 flow. Second operand has 19 states, 19 states have (on average 118.05263157894737) internal successors, (2243), 19 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:46,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:14:46,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-27 01:14:46,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:14:47,054 INFO L124 PetriNetUnfolderBase]: 4319/5873 cut-off events. [2023-08-27 01:14:47,054 INFO L125 PetriNetUnfolderBase]: For 22335/22373 co-relation queries the response was YES. [2023-08-27 01:14:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28574 conditions, 5873 events. 4319/5873 cut-off events. For 22335/22373 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24883 event pairs, 1426 based on Foata normal form. 54/5896 useless extension candidates. Maximal degree in co-relation 28523. Up to 4682 conditions per place. [2023-08-27 01:14:47,103 INFO L140 encePairwiseOnDemand]: 316/325 looper letters, 349 selfloop transitions, 130 changer transitions 0/502 dead transitions. [2023-08-27 01:14:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 502 transitions, 6124 flow [2023-08-27 01:14:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:14:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:14:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1221 transitions. [2023-08-27 01:14:47,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3756923076923077 [2023-08-27 01:14:47,105 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1221 transitions. [2023-08-27 01:14:47,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1221 transitions. [2023-08-27 01:14:47,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:14:47,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1221 transitions. [2023-08-27 01:14:47,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.1) internal successors, (1221), 10 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:47,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:47,108 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:47,108 INFO L175 Difference]: Start difference. First operand has 226 places, 448 transitions, 4893 flow. Second operand 10 states and 1221 transitions. [2023-08-27 01:14:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 502 transitions, 6124 flow [2023-08-27 01:14:47,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 502 transitions, 5402 flow, removed 4 selfloop flow, removed 39 redundant places. [2023-08-27 01:14:47,231 INFO L231 Difference]: Finished difference. Result has 197 places, 448 transitions, 4458 flow [2023-08-27 01:14:47,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4458, PETRI_PLACES=197, PETRI_TRANSITIONS=448} [2023-08-27 01:14:47,232 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 159 predicate places. [2023-08-27 01:14:47,232 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 448 transitions, 4458 flow [2023-08-27 01:14:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.05263157894737) internal successors, (2243), 19 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:14:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:14:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 01:14:47,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 01:14:47,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:14:47,433 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:14:47,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:14:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1343183161, now seen corresponding path program 3 times [2023-08-27 01:14:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:14:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15726199] [2023-08-27 01:14:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:14:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:14:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:14:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:14:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:14:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15726199] [2023-08-27 01:14:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15726199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:14:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382364705] [2023-08-27 01:14:48,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:14:48,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:14:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:14:48,846 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:14:48,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 01:14:48,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:14:48,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:14:48,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 01:14:48,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:14:49,950 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:49,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 89 [2023-08-27 01:14:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:14:50,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:14:54,432 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:14:54,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 687 treesize of output 1175 [2023-08-27 01:15:03,065 WARN L667 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-27 01:19:16,853 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 01:21:14,985 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 01:24:09,074 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 01:25:32,231 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. Received shutdown request... [2023-08-27 01:26:42,793 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 01:26:42,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 18 remaining) [2023-08-27 01:26:42,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:26:42,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:26:42,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 01:26:42,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:26:42,996 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. [2023-08-27 01:26:42,997 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 01:26:42,997 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 01:26:42,997 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 01:26:42,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 01:26:42,999 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-27 01:26:42,999 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 01:26:42,999 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 01:26:42,999 INFO L445 BasicCegarLoop]: Path program histogram: [18, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:26:43,003 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:26:43,004 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:26:43,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:26:43 BasicIcfg [2023-08-27 01:26:43,006 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:26:43,006 INFO L158 Benchmark]: Toolchain (without parser) took 833051.51ms. Allocated memory was 346.0MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 321.7MB in the beginning and 1.2GB in the end (delta: -851.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-27 01:26:43,007 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory was 323.7MB in the beginning and 323.7MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:26:43,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.47ms. Allocated memory is still 346.0MB. Free memory was 321.2MB in the beginning and 309.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:26:43,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.55ms. Allocated memory is still 346.0MB. Free memory was 309.7MB in the beginning and 307.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:26:43,007 INFO L158 Benchmark]: Boogie Preprocessor took 46.94ms. Allocated memory is still 346.0MB. Free memory was 307.6MB in the beginning and 306.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:26:43,007 INFO L158 Benchmark]: RCFGBuilder took 645.78ms. Allocated memory is still 346.0MB. Free memory was 306.0MB in the beginning and 284.0MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 01:26:43,008 INFO L158 Benchmark]: TraceAbstraction took 832010.01ms. Allocated memory was 346.0MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 283.5MB in the beginning and 1.2GB in the end (delta: -889.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-27 01:26:43,009 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory was 323.7MB in the beginning and 323.7MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 292.47ms. Allocated memory is still 346.0MB. Free memory was 321.2MB in the beginning and 309.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.55ms. Allocated memory is still 346.0MB. Free memory was 309.7MB in the beginning and 307.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.94ms. Allocated memory is still 346.0MB. Free memory was 307.6MB in the beginning and 306.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 645.78ms. Allocated memory is still 346.0MB. Free memory was 306.0MB in the beginning and 284.0MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 832010.01ms. Allocated memory was 346.0MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 283.5MB in the beginning and 1.2GB in the end (delta: -889.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 150 PlacesBefore, 38 PlacesAfterwards, 152 TransitionsBefore, 32 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 8 FixpointIterations, 82 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 159 TotalNumberOfCompositions, 2933 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2715, independent: 2691, independent conditional: 0, independent unconditional: 2691, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1362, independent: 1352, independent conditional: 0, independent unconditional: 1352, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2715, independent: 1339, independent conditional: 0, independent unconditional: 1339, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1362, unknown conditional: 0, unknown unconditional: 1362] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 33ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 200 locations, 18 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: 831.9s, OverallIterations: 37, TraceHistogramMax: 4, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 36.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 2884 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2884 mSDsluCounter, 962 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 88 IncrementalHoareTripleChecker+Unchecked, 844 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15053 IncrementalHoareTripleChecker+Invalid, 15282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 118 mSDtfsCounter, 15053 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1532 GetRequests, 818 SyntacticMatches, 38 SemanticMatches, 676 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5337 ImplicationChecksByTransitivity, 55.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4893occurred in iteration=35, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 1213 NumberOfCodeBlocks, 1204 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 1670 ConstructedInterpolants, 14 QuantifiedInterpolants, 19883 SizeOfPredicates, 198 NumberOfNonLiveVariables, 6415 ConjunctsInSsa, 453 ConjunctsInUnsatCore, 93 InterpolantComputations, 11 PerfectInterpolantSequences, 186/387 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown