/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/goblint-regression/28-race_reach_36-indirect_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:40:11,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:40:11,101 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 [2023-08-26 22:40:11,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:40:11,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:40:11,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:40:11,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:40:11,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:40:11,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:40:11,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:40:11,143 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:40:11,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:40:11,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:40:11,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:40:11,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:40:11,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:40:11,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:40:11,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:40:11,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:40:11,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:40:11,145 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:40:11,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:40:11,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:40:11,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:40:11,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:40:11,147 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:40:11,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:40:11,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:40:11,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:40:11,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:40:11,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:40:11,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:40:11,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:40:11,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:40:11,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:40:11,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:40:11,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:40:11,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:40:11,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:40:11,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:40:11,516 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:40:11,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-26 22:40:12,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:40:13,032 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:40:13,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-26 22:40:13,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fb5a0e49/4bed84295b0a4afbbd04f3df9e99587d/FLAG8ed3cdedd [2023-08-26 22:40:13,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fb5a0e49/4bed84295b0a4afbbd04f3df9e99587d [2023-08-26 22:40:13,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:40:13,070 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:40:13,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:40:13,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:40:13,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:40:13,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6e65b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13, skipping insertion in model container [2023-08-26 22:40:13,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,127 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:40:13,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:40:13,472 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:40:13,502 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:40:13,504 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:40:13,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:40:13,576 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:40:13,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13 WrapperNode [2023-08-26 22:40:13,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:40:13,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:40:13,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:40:13,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:40:13,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,640 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-08-26 22:40:13,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:40:13,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:40:13,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:40:13,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:40:13,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:40:13,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:40:13,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:40:13,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:40:13,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (1/1) ... [2023-08-26 22:40:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:40:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:13,730 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) [2023-08-26 22:40:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:40:13,767 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:40:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:40:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:40:13,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:40:13,769 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:40:13,750 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 [2023-08-26 22:40:13,895 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:40:13,897 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:40:14,099 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:40:14,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:40:14,107 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:40:14,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:40:14 BoogieIcfgContainer [2023-08-26 22:40:14,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:40:14,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:40:14,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:40:14,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:40:14,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:40:13" (1/3) ... [2023-08-26 22:40:14,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1216a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:40:14, skipping insertion in model container [2023-08-26 22:40:14,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:13" (2/3) ... [2023-08-26 22:40:14,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1216a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:40:14, skipping insertion in model container [2023-08-26 22:40:14,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:40:14" (3/3) ... [2023-08-26 22:40:14,121 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-26 22:40:14,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:40:14,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:40:14,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:40:14,210 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:40:14,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 133 transitions, 274 flow [2023-08-26 22:40:14,304 INFO L124 PetriNetUnfolderBase]: 19/174 cut-off events. [2023-08-26 22:40:14,305 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:14,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 174 events. 19/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 435 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-26 22:40:14,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 133 transitions, 274 flow [2023-08-26 22:40:14,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 268 flow [2023-08-26 22:40:14,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:14,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 268 flow [2023-08-26 22:40:14,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 268 flow [2023-08-26 22:40:14,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-08-26 22:40:14,377 INFO L124 PetriNetUnfolderBase]: 18/171 cut-off events. [2023-08-26 22:40:14,378 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:14,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 171 events. 18/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 434 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-26 22:40:14,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 4080 [2023-08-26 22:40:17,546 INFO L134 LiptonReduction]: Checked pairs total: 7420 [2023-08-26 22:40:17,546 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-26 22:40:17,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:17,563 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;@574f4dc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:17,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:40:17,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:17,566 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 22:40:17,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:17,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:17,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:40:17,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:40:17,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 15847068, now seen corresponding path program 1 times [2023-08-26 22:40:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323469327] [2023-08-26 22:40:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:17,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:17,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323469327] [2023-08-26 22:40:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323469327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439754136] [2023-08-26 22:40:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:17,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 255 [2023-08-26 22:40:17,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:17,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:17,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 255 [2023-08-26 22:40:17,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:18,023 INFO L124 PetriNetUnfolderBase]: 126/307 cut-off events. [2023-08-26 22:40:18,023 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:18,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 307 events. 126/307 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1388 event pairs, 42 based on Foata normal form. 10/227 useless extension candidates. Maximal degree in co-relation 566. Up to 184 conditions per place. [2023-08-26 22:40:18,027 INFO L140 encePairwiseOnDemand]: 242/255 looper letters, 40 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-26 22:40:18,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 182 flow [2023-08-26 22:40:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-26 22:40:18,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084967320261438 [2023-08-26 22:40:18,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-26 22:40:18,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-26 22:40:18,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:18,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-26 22:40:18,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,060 INFO L175 Difference]: Start difference. First operand has 36 places, 42 transitions, 92 flow. Second operand 3 states and 389 transitions. [2023-08-26 22:40:18,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 182 flow [2023-08-26 22:40:18,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:18,065 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 74 flow [2023-08-26 22:40:18,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-26 22:40:18,071 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-26 22:40:18,071 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 74 flow [2023-08-26 22:40:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:18,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:40:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:40:18,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:40:18,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 15847078, now seen corresponding path program 1 times [2023-08-26 22:40:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078815659] [2023-08-26 22:40:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:18,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078815659] [2023-08-26 22:40:18,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078815659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:18,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961921198] [2023-08-26 22:40:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:18,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:18,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:18,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 255 [2023-08-26 22:40:18,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:18,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 255 [2023-08-26 22:40:18,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:18,228 INFO L124 PetriNetUnfolderBase]: 112/261 cut-off events. [2023-08-26 22:40:18,229 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-26 22:40:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 261 events. 112/261 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1002 event pairs, 91 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 514. Up to 236 conditions per place. [2023-08-26 22:40:18,232 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 40 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-26 22:40:18,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 186 flow [2023-08-26 22:40:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-26 22:40:18,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-26 22:40:18,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-26 22:40:18,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-26 22:40:18,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:18,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-26 22:40:18,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,246 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 3 states and 374 transitions. [2023-08-26 22:40:18,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 186 flow [2023-08-26 22:40:18,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:40:18,248 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2023-08-26 22:40:18,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-26 22:40:18,249 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-26 22:40:18,249 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2023-08-26 22:40:18,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:18,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:18,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:40:18,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:40:18,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:40:18,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1950800390, now seen corresponding path program 1 times [2023-08-26 22:40:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:18,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077311320] [2023-08-26 22:40:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:18,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:18,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:40:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:18,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:40:18,297 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:40:18,297 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:40:18,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:40:18,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:40:18,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:40:18,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-26 22:40:18,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (8 of 14 remaining) [2023-08-26 22:40:18,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:40:18,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:40:18,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:40:18,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:40:18,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:40:18,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:40:18,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:40:18,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:40:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:40:18,302 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 22:40:18,304 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:40:18,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:40:18,323 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:40:18,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,356 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-08-26 22:40:18,357 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:40:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 928 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 176. Up to 8 conditions per place. [2023-08-26 22:40:18,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,361 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:18,361 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 175 transitions, 368 flow [2023-08-26 22:40:18,387 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-08-26 22:40:18,388 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:40:18,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 928 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 176. Up to 8 conditions per place. [2023-08-26 22:40:18,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 12880 [2023-08-26 22:40:21,688 INFO L134 LiptonReduction]: Checked pairs total: 25905 [2023-08-26 22:40:21,688 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 22:40:21,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:21,692 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;@574f4dc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:21,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:40:21,694 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:21,695 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-26 22:40:21,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:21,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:21,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:40:21,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:21,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 27209236, now seen corresponding path program 1 times [2023-08-26 22:40:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329525387] [2023-08-26 22:40:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:21,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329525387] [2023-08-26 22:40:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329525387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605908512] [2023-08-26 22:40:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:21,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:21,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-08-26 22:40:21,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:21,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:21,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-08-26 22:40:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:22,421 INFO L124 PetriNetUnfolderBase]: 4825/8045 cut-off events. [2023-08-26 22:40:22,421 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-26 22:40:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15826 conditions, 8045 events. 4825/8045 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 53690 event pairs, 2275 based on Foata normal form. 770/6151 useless extension candidates. Maximal degree in co-relation 1777. Up to 7073 conditions per place. [2023-08-26 22:40:22,476 INFO L140 encePairwiseOnDemand]: 308/328 looper letters, 72 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-08-26 22:40:22,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 332 flow [2023-08-26 22:40:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-26 22:40:22,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2023-08-26 22:40:22,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-26 22:40:22,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-26 22:40:22,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:22,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-26 22:40:22,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:22,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:22,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:22,484 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 536 transitions. [2023-08-26 22:40:22,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 332 flow [2023-08-26 22:40:22,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:22,488 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 148 flow [2023-08-26 22:40:22,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-26 22:40:22,491 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-26 22:40:22,491 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 148 flow [2023-08-26 22:40:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:22,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:22,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:40:22,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:40:22,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:22,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash 843360073, now seen corresponding path program 1 times [2023-08-26 22:40:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:22,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33909519] [2023-08-26 22:40:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33909519] [2023-08-26 22:40:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33909519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237496806] [2023-08-26 22:40:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:22,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-08-26 22:40:22,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:22,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:22,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-08-26 22:40:22,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:23,111 INFO L124 PetriNetUnfolderBase]: 4448/7214 cut-off events. [2023-08-26 22:40:23,111 INFO L125 PetriNetUnfolderBase]: For 1119/1119 co-relation queries the response was YES. [2023-08-26 22:40:23,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15020 conditions, 7214 events. 4448/7214 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 48238 event pairs, 1300 based on Foata normal form. 209/5301 useless extension candidates. Maximal degree in co-relation 14919. Up to 4961 conditions per place. [2023-08-26 22:40:23,163 INFO L140 encePairwiseOnDemand]: 325/328 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-26 22:40:23,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 334 flow [2023-08-26 22:40:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-26 22:40:23,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-08-26 22:40:23,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-26 22:40:23,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-26 22:40:23,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:23,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-26 22:40:23,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,170 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 148 flow. Second operand 3 states and 504 transitions. [2023-08-26 22:40:23,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 334 flow [2023-08-26 22:40:23,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:40:23,173 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 138 flow [2023-08-26 22:40:23,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-26 22:40:23,174 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-26 22:40:23,174 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 138 flow [2023-08-26 22:40:23,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:23,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:40:23,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:23,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1273406715, now seen corresponding path program 1 times [2023-08-26 22:40:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683471692] [2023-08-26 22:40:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683471692] [2023-08-26 22:40:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683471692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:23,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233622014] [2023-08-26 22:40:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:23,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:40:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:40:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:40:23,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 328 [2023-08-26 22:40:23,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:23,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 328 [2023-08-26 22:40:23,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:23,763 INFO L124 PetriNetUnfolderBase]: 3978/6635 cut-off events. [2023-08-26 22:40:23,764 INFO L125 PetriNetUnfolderBase]: For 827/827 co-relation queries the response was YES. [2023-08-26 22:40:23,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 6635 events. 3978/6635 cut-off events. For 827/827 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 42401 event pairs, 1495 based on Foata normal form. 0/4875 useless extension candidates. Maximal degree in co-relation 11153. Up to 5831 conditions per place. [2023-08-26 22:40:23,805 INFO L140 encePairwiseOnDemand]: 320/328 looper letters, 69 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-26 22:40:23,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 361 flow [2023-08-26 22:40:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:40:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:40:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2023-08-26 22:40:23,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336890243902439 [2023-08-26 22:40:23,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 569 transitions. [2023-08-26 22:40:23,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 569 transitions. [2023-08-26 22:40:23,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:23,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 569 transitions. [2023-08-26 22:40:23,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,813 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 138 flow. Second operand 4 states and 569 transitions. [2023-08-26 22:40:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 361 flow [2023-08-26 22:40:23,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:40:23,817 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 185 flow [2023-08-26 22:40:23,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-26 22:40:23,820 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-26 22:40:23,820 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 185 flow [2023-08-26 22:40:23,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:23,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:23,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:40:23,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:23,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1016711016, now seen corresponding path program 1 times [2023-08-26 22:40:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350919738] [2023-08-26 22:40:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:23,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350919738] [2023-08-26 22:40:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350919738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:40:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322871728] [2023-08-26 22:40:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:23,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:23,881 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) [2023-08-26 22:40:23,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:40:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:23,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:40:23,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:40:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:24,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:40:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:24,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322871728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:40:24,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:40:24,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-26 22:40:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371632570] [2023-08-26 22:40:24,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:40:24,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:40:24,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:40:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:40:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-08-26 22:40:24,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:24,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-08-26 22:40:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:24,257 INFO L124 PetriNetUnfolderBase]: 830/1611 cut-off events. [2023-08-26 22:40:24,258 INFO L125 PetriNetUnfolderBase]: For 563/563 co-relation queries the response was YES. [2023-08-26 22:40:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 1611 events. 830/1611 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9948 event pairs, 14 based on Foata normal form. 188/1576 useless extension candidates. Maximal degree in co-relation 3073. Up to 1000 conditions per place. [2023-08-26 22:40:24,266 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 72 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-26 22:40:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 388 flow [2023-08-26 22:40:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:40:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:40:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-08-26 22:40:24,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841463414634146 [2023-08-26 22:40:24,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-08-26 22:40:24,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-08-26 22:40:24,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:24,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-08-26 22:40:24,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,279 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 185 flow. Second operand 5 states and 794 transitions. [2023-08-26 22:40:24,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 388 flow [2023-08-26 22:40:24,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 370 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:24,284 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 123 flow [2023-08-26 22:40:24,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-26 22:40:24,286 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-26 22:40:24,286 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 123 flow [2023-08-26 22:40:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:24,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:24,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:40:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:24,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:24,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 60012627, now seen corresponding path program 1 times [2023-08-26 22:40:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454889477] [2023-08-26 22:40:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454889477] [2023-08-26 22:40:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454889477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:24,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:40:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254039423] [2023-08-26 22:40:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:24,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:40:24,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:40:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:40:24,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 328 [2023-08-26 22:40:24,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:24,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 328 [2023-08-26 22:40:24,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:24,953 INFO L124 PetriNetUnfolderBase]: 1133/2080 cut-off events. [2023-08-26 22:40:24,953 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2023-08-26 22:40:24,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 2080 events. 1133/2080 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12903 event pairs, 205 based on Foata normal form. 0/1802 useless extension candidates. Maximal degree in co-relation 3753. Up to 1140 conditions per place. [2023-08-26 22:40:24,965 INFO L140 encePairwiseOnDemand]: 312/328 looper letters, 89 selfloop transitions, 24 changer transitions 0/119 dead transitions. [2023-08-26 22:40:24,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 119 transitions, 593 flow [2023-08-26 22:40:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:40:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:40:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 926 transitions. [2023-08-26 22:40:24,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40331010452961674 [2023-08-26 22:40:24,969 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 926 transitions. [2023-08-26 22:40:24,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 926 transitions. [2023-08-26 22:40:24,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:24,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 926 transitions. [2023-08-26 22:40:24,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 328.0) internal successors, (2624), 8 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,975 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 328.0) internal successors, (2624), 8 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,975 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 123 flow. Second operand 7 states and 926 transitions. [2023-08-26 22:40:24,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 119 transitions, 593 flow [2023-08-26 22:40:24,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 119 transitions, 568 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-26 22:40:24,979 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 309 flow [2023-08-26 22:40:24,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-26 22:40:24,981 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-26 22:40:24,981 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 309 flow [2023-08-26 22:40:24,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:24,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:24,983 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:40:24,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:40:24,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:24,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash -848836746, now seen corresponding path program 1 times [2023-08-26 22:40:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733953221] [2023-08-26 22:40:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:24,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:25,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:40:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:25,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:40:25,033 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:40:25,033 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:40:25,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:40:25,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:40:25,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:40:25,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:40:25,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:40:25,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:40:25,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:40:25,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:40:25,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:40:25,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:40:25,035 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 22:40:25,036 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:40:25,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:40:25,064 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:40:25,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,120 INFO L124 PetriNetUnfolderBase]: 54/455 cut-off events. [2023-08-26 22:40:25,120 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:40:25,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 54/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1616 event pairs, 1 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-26 22:40:25,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:25,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 217 transitions, 464 flow [2023-08-26 22:40:25,182 INFO L124 PetriNetUnfolderBase]: 54/455 cut-off events. [2023-08-26 22:40:25,182 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:40:25,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 54/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1616 event pairs, 1 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-26 22:40:25,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 24480 [2023-08-26 22:40:28,687 INFO L134 LiptonReduction]: Checked pairs total: 54331 [2023-08-26 22:40:28,687 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-26 22:40:28,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:28,690 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;@574f4dc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:28,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:40:28,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:28,692 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-26 22:40:28,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:28,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:28,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:40:28,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:28,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 40935522, now seen corresponding path program 1 times [2023-08-26 22:40:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:28,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670352118] [2023-08-26 22:40:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670352118] [2023-08-26 22:40:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670352118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301764807] [2023-08-26 22:40:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:28,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:28,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:28,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 404 [2023-08-26 22:40:28,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:28,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:28,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 404 [2023-08-26 22:40:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:38,422 INFO L124 PetriNetUnfolderBase]: 115112/162549 cut-off events. [2023-08-26 22:40:38,422 INFO L125 PetriNetUnfolderBase]: For 2657/2657 co-relation queries the response was YES. [2023-08-26 22:40:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323775 conditions, 162549 events. 115112/162549 cut-off events. For 2657/2657 co-relation queries the response was YES. Maximal size of possible extension queue 4127. Compared 1193508 event pairs, 74986 based on Foata normal form. 11908/124066 useless extension candidates. Maximal degree in co-relation 28727. Up to 159491 conditions per place. [2023-08-26 22:40:39,387 INFO L140 encePairwiseOnDemand]: 378/404 looper letters, 75 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-26 22:40:39,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 354 flow [2023-08-26 22:40:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:39,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-26 22:40:39,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288778877887789 [2023-08-26 22:40:39,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-26 22:40:39,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-26 22:40:39,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:39,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-26 22:40:39,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:39,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:39,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:39,395 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 641 transitions. [2023-08-26 22:40:39,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 354 flow [2023-08-26 22:40:39,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:39,401 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 186 flow [2023-08-26 22:40:39,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-26 22:40:39,402 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-26 22:40:39,402 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 186 flow [2023-08-26 22:40:39,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:39,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:39,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:39,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:40:39,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:39,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -909994130, now seen corresponding path program 1 times [2023-08-26 22:40:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:39,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655017242] [2023-08-26 22:40:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:39,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:39,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655017242] [2023-08-26 22:40:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655017242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:39,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:39,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800475190] [2023-08-26 22:40:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:40:39,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:40:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:40:39,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 404 [2023-08-26 22:40:39,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:39,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:39,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 404 [2023-08-26 22:40:39,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:48,457 INFO L124 PetriNetUnfolderBase]: 116932/163295 cut-off events. [2023-08-26 22:40:48,457 INFO L125 PetriNetUnfolderBase]: For 9069/9069 co-relation queries the response was YES. [2023-08-26 22:40:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339765 conditions, 163295 events. 116932/163295 cut-off events. For 9069/9069 co-relation queries the response was YES. Maximal size of possible extension queue 4288. Compared 1171607 event pairs, 54335 based on Foata normal form. 0/114758 useless extension candidates. Maximal degree in co-relation 339676. Up to 158865 conditions per place. [2023-08-26 22:40:49,395 INFO L140 encePairwiseOnDemand]: 393/404 looper letters, 95 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-08-26 22:40:49,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 493 flow [2023-08-26 22:40:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:40:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:40:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 721 transitions. [2023-08-26 22:40:49,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44616336633663367 [2023-08-26 22:40:49,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 721 transitions. [2023-08-26 22:40:49,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 721 transitions. [2023-08-26 22:40:49,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:49,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 721 transitions. [2023-08-26 22:40:49,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:49,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:49,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:49,405 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 186 flow. Second operand 4 states and 721 transitions. [2023-08-26 22:40:49,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 493 flow [2023-08-26 22:40:49,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:49,423 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 255 flow [2023-08-26 22:40:49,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2023-08-26 22:40:49,424 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-08-26 22:40:49,424 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 255 flow [2023-08-26 22:40:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:49,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:49,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:49,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:40:49,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:49,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1623185315, now seen corresponding path program 1 times [2023-08-26 22:40:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:49,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21818913] [2023-08-26 22:40:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:49,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21818913] [2023-08-26 22:40:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21818913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:40:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495934918] [2023-08-26 22:40:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:49,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:49,487 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) [2023-08-26 22:40:49,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:40:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:49,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:40:49,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:40:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:49,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:40:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495934918] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:40:49,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:40:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:40:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197789708] [2023-08-26 22:40:49,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:40:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:40:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:40:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:40:49,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 404 [2023-08-26 22:40:49,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:49,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:49,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 404 [2023-08-26 22:40:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:52,287 INFO L124 PetriNetUnfolderBase]: 29862/45297 cut-off events. [2023-08-26 22:40:52,287 INFO L125 PetriNetUnfolderBase]: For 20148/20148 co-relation queries the response was YES. [2023-08-26 22:40:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113560 conditions, 45297 events. 29862/45297 cut-off events. For 20148/20148 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 338798 event pairs, 248 based on Foata normal form. 3010/37994 useless extension candidates. Maximal degree in co-relation 71037. Up to 21232 conditions per place. [2023-08-26 22:40:52,513 INFO L140 encePairwiseOnDemand]: 399/404 looper letters, 176 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2023-08-26 22:40:52,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 189 transitions, 924 flow [2023-08-26 22:40:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:40:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:40:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1422 transitions. [2023-08-26 22:40:52,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028288543140028 [2023-08-26 22:40:52,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1422 transitions. [2023-08-26 22:40:52,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1422 transitions. [2023-08-26 22:40:52,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:52,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1422 transitions. [2023-08-26 22:40:52,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:52,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:52,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:52,526 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 255 flow. Second operand 7 states and 1422 transitions. [2023-08-26 22:40:52,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 189 transitions, 924 flow [2023-08-26 22:40:52,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 189 transitions, 874 flow, removed 25 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:52,572 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 189 flow [2023-08-26 22:40:52,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-08-26 22:40:52,573 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-26 22:40:52,573 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 189 flow [2023-08-26 22:40:52,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:52,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:52,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:40:52,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:40:52,774 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,SelfDestructingSolverStorable11 [2023-08-26 22:40:52,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:52,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1221545473, now seen corresponding path program 1 times [2023-08-26 22:40:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438246074] [2023-08-26 22:40:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:52,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:52,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438246074] [2023-08-26 22:40:52,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438246074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:40:52,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205049278] [2023-08-26 22:40:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:52,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:52,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:52,827 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) [2023-08-26 22:40:52,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:40:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:52,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:40:52,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:40:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:52,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:40:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205049278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:52,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:40:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:40:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222970232] [2023-08-26 22:40:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:40:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:40:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:40:52,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 404 [2023-08-26 22:40:52,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:52,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:52,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 404 [2023-08-26 22:40:52,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:54,977 INFO L124 PetriNetUnfolderBase]: 21703/31146 cut-off events. [2023-08-26 22:40:54,978 INFO L125 PetriNetUnfolderBase]: For 12407/12431 co-relation queries the response was YES. [2023-08-26 22:40:55,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73684 conditions, 31146 events. 21703/31146 cut-off events. For 12407/12431 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 201650 event pairs, 14334 based on Foata normal form. 0/25646 useless extension candidates. Maximal degree in co-relation 31134. Up to 30721 conditions per place. [2023-08-26 22:40:55,121 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 61 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-26 22:40:55,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 330 flow [2023-08-26 22:40:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:40:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:40:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 772 transitions. [2023-08-26 22:40:55,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777227722772277 [2023-08-26 22:40:55,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 772 transitions. [2023-08-26 22:40:55,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 772 transitions. [2023-08-26 22:40:55,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:55,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 772 transitions. [2023-08-26 22:40:55,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:55,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:55,129 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 189 flow. Second operand 4 states and 772 transitions. [2023-08-26 22:40:55,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 330 flow [2023-08-26 22:40:55,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 321 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 22:40:55,133 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 172 flow [2023-08-26 22:40:55,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-08-26 22:40:55,133 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-08-26 22:40:55,133 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 172 flow [2023-08-26 22:40:55,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:55,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:55,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:55,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:40:55,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:55,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:55,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1842530867, now seen corresponding path program 1 times [2023-08-26 22:40:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:55,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934669709] [2023-08-26 22:40:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:55,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:55,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934669709] [2023-08-26 22:40:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934669709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:40:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845748667] [2023-08-26 22:40:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:40:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:40:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:40:55,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 404 [2023-08-26 22:40:55,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 147.5) internal successors, (885), 6 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:55,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:55,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 404 [2023-08-26 22:40:55,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:58,704 INFO L124 PetriNetUnfolderBase]: 34404/50905 cut-off events. [2023-08-26 22:40:58,704 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2023-08-26 22:40:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114383 conditions, 50905 events. 34404/50905 cut-off events. For 10480/10480 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 375662 event pairs, 7880 based on Foata normal form. 0/43610 useless extension candidates. Maximal degree in co-relation 114295. Up to 30719 conditions per place. [2023-08-26 22:40:58,986 INFO L140 encePairwiseOnDemand]: 382/404 looper letters, 157 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2023-08-26 22:40:58,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 195 transitions, 952 flow [2023-08-26 22:40:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:40:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:40:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1210 transitions. [2023-08-26 22:40:58,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42786421499292787 [2023-08-26 22:40:58,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1210 transitions. [2023-08-26 22:40:58,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1210 transitions. [2023-08-26 22:40:58,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:58,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1210 transitions. [2023-08-26 22:40:58,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 172.85714285714286) internal successors, (1210), 7 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:58,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:58,999 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 172 flow. Second operand 7 states and 1210 transitions. [2023-08-26 22:40:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 195 transitions, 952 flow [2023-08-26 22:40:59,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 195 transitions, 945 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:40:59,009 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 449 flow [2023-08-26 22:40:59,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2023-08-26 22:40:59,010 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-26 22:40:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 449 flow [2023-08-26 22:40:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.5) internal successors, (885), 6 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:40:59,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:59,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1842530882, now seen corresponding path program 1 times [2023-08-26 22:40:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24918058] [2023-08-26 22:40:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24918058] [2023-08-26 22:40:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24918058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473638222] [2023-08-26 22:40:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:59,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 404 [2023-08-26 22:40:59,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:59,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:59,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 404 [2023-08-26 22:40:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:04,232 INFO L124 PetriNetUnfolderBase]: 42543/66195 cut-off events. [2023-08-26 22:41:04,232 INFO L125 PetriNetUnfolderBase]: For 74285/74449 co-relation queries the response was YES. [2023-08-26 22:41:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201420 conditions, 66195 events. 42543/66195 cut-off events. For 74285/74449 co-relation queries the response was YES. Maximal size of possible extension queue 2520. Compared 554528 event pairs, 14428 based on Foata normal form. 3096/69275 useless extension candidates. Maximal degree in co-relation 201324. Up to 34032 conditions per place. [2023-08-26 22:41:04,640 INFO L140 encePairwiseOnDemand]: 387/404 looper letters, 112 selfloop transitions, 32 changer transitions 0/150 dead transitions. [2023-08-26 22:41:04,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 150 transitions, 1064 flow [2023-08-26 22:41:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-26 22:41:04,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46204620462046203 [2023-08-26 22:41:04,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-26 22:41:04,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-26 22:41:04,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:04,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-26 22:41:04,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:04,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:04,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:04,644 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 449 flow. Second operand 3 states and 560 transitions. [2023-08-26 22:41:04,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 150 transitions, 1064 flow [2023-08-26 22:41:04,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 1046 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:04,752 INFO L231 Difference]: Finished difference. Result has 82 places, 112 transitions, 801 flow [2023-08-26 22:41:04,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=82, PETRI_TRANSITIONS=112} [2023-08-26 22:41:04,753 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-08-26 22:41:04,753 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 112 transitions, 801 flow [2023-08-26 22:41:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:04,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:04,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:41:04,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:04,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 200004486, now seen corresponding path program 1 times [2023-08-26 22:41:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590980508] [2023-08-26 22:41:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590980508] [2023-08-26 22:41:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590980508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:41:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188393290] [2023-08-26 22:41:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:04,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:04,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:04,970 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) [2023-08-26 22:41:04,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:41:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:05,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-26 22:41:05,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:41:05,106 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:41:05,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:41:05,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:41:05,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:41:05,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:41:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:05,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:41:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188393290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:05,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:41:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-26 22:41:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228954695] [2023-08-26 22:41:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:41:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:41:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-26 22:41:05,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 404 [2023-08-26 22:41:05,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 112 transitions, 801 flow. Second operand has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:05,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:05,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 404 [2023-08-26 22:41:05,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:10,377 INFO L124 PetriNetUnfolderBase]: 41479/63313 cut-off events. [2023-08-26 22:41:10,377 INFO L125 PetriNetUnfolderBase]: For 137839/137839 co-relation queries the response was YES. [2023-08-26 22:41:10,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224280 conditions, 63313 events. 41479/63313 cut-off events. For 137839/137839 co-relation queries the response was YES. Maximal size of possible extension queue 2337. Compared 499187 event pairs, 15317 based on Foata normal form. 201/63513 useless extension candidates. Maximal degree in co-relation 224175. Up to 58429 conditions per place. [2023-08-26 22:41:10,848 INFO L140 encePairwiseOnDemand]: 395/404 looper letters, 153 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2023-08-26 22:41:10,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 179 transitions, 1542 flow [2023-08-26 22:41:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:41:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:41:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2023-08-26 22:41:10,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089108910891089 [2023-08-26 22:41:10,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2023-08-26 22:41:10,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2023-08-26 22:41:10,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:10,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2023-08-26 22:41:10,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:10,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:10,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:10,857 INFO L175 Difference]: Start difference. First operand has 82 places, 112 transitions, 801 flow. Second operand 5 states and 826 transitions. [2023-08-26 22:41:10,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 179 transitions, 1542 flow [2023-08-26 22:41:11,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 179 transitions, 1458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:41:11,046 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 937 flow [2023-08-26 22:41:11,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=937, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2023-08-26 22:41:11,047 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2023-08-26 22:41:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 937 flow [2023-08-26 22:41:11,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:11,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:41:11,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 22:41:11,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:11,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash 200004501, now seen corresponding path program 1 times [2023-08-26 22:41:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089152381] [2023-08-26 22:41:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:11,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:11,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:11,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089152381] [2023-08-26 22:41:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089152381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:41:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528883719] [2023-08-26 22:41:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:11,420 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) [2023-08-26 22:41:11,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:41:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:11,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 22:41:11,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:41:11,524 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:41:11,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:41:11,570 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 [2023-08-26 22:41:11,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:41:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:11,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:41:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528883719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:11,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:41:11,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-26 22:41:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656440973] [2023-08-26 22:41:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:41:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:11,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:41:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-26 22:41:11,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 404 [2023-08-26 22:41:11,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 937 flow. Second operand has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:11,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:11,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 404 [2023-08-26 22:41:11,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:16,424 INFO L124 PetriNetUnfolderBase]: 39975/61183 cut-off events. [2023-08-26 22:41:16,425 INFO L125 PetriNetUnfolderBase]: For 119377/119377 co-relation queries the response was YES. [2023-08-26 22:41:16,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207430 conditions, 61183 events. 39975/61183 cut-off events. For 119377/119377 co-relation queries the response was YES. Maximal size of possible extension queue 2196. Compared 486762 event pairs, 19618 based on Foata normal form. 1035/62205 useless extension candidates. Maximal degree in co-relation 207323. Up to 44004 conditions per place. [2023-08-26 22:41:16,863 INFO L140 encePairwiseOnDemand]: 388/404 looper letters, 146 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2023-08-26 22:41:16,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 181 transitions, 1602 flow [2023-08-26 22:41:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:41:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:41:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 700 transitions. [2023-08-26 22:41:16,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43316831683168316 [2023-08-26 22:41:16,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 700 transitions. [2023-08-26 22:41:16,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 700 transitions. [2023-08-26 22:41:16,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:16,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 700 transitions. [2023-08-26 22:41:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:16,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:16,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:16,870 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 937 flow. Second operand 4 states and 700 transitions. [2023-08-26 22:41:16,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 181 transitions, 1602 flow [2023-08-26 22:41:16,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 181 transitions, 1564 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-26 22:41:16,951 INFO L231 Difference]: Finished difference. Result has 87 places, 141 transitions, 1212 flow [2023-08-26 22:41:16,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1212, PETRI_PLACES=87, PETRI_TRANSITIONS=141} [2023-08-26 22:41:16,952 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-08-26 22:41:16,952 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 141 transitions, 1212 flow [2023-08-26 22:41:16,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:16,953 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:41:16,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-26 22:41:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 22:41:17,154 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:17,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1111400276, now seen corresponding path program 1 times [2023-08-26 22:41:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714163191] [2023-08-26 22:41:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:17,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:41:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:17,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:41:17,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:41:17,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:41:17,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:41:17,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:41:17,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:41:17,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (16 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:41:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:41:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:41:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 22:41:17,181 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:17,182 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:41:17,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:41:17,202 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:41:17,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,280 INFO L124 PetriNetUnfolderBase]: 86/700 cut-off events. [2023-08-26 22:41:17,280 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:41:17,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 86/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2816 event pairs, 6 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-26 22:41:17,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,296 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:17,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 259 transitions, 562 flow [2023-08-26 22:41:17,370 INFO L124 PetriNetUnfolderBase]: 86/700 cut-off events. [2023-08-26 22:41:17,370 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:41:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 86/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2816 event pairs, 6 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-26 22:41:17,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 39520 [2023-08-26 22:41:20,998 INFO L134 LiptonReduction]: Checked pairs total: 95437 [2023-08-26 22:41:20,998 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-26 22:41:20,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:21,000 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;@574f4dc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:21,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 22:41:21,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:21,001 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:41:21,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:21,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:21,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:41:21,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 22:41:21,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 56789125, now seen corresponding path program 1 times [2023-08-26 22:41:21,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612112168] [2023-08-26 22:41:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:21,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:21,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612112168] [2023-08-26 22:41:21,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612112168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:21,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:21,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:41:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787608981] [2023-08-26 22:41:21,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:21,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:21,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 472 [2023-08-26 22:41:21,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 113 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:21,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:21,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 472 [2023-08-26 22:41:21,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand