/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_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:33:06,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:33:06,821 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 22:33:06,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:33:06,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:33:06,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:33:06,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:33:06,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:33:06,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:33:06,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:33:06,855 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:33:06,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:33:06,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:33:06,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:33:06,858 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:33:06,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:33:06,859 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:33:06,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:33:06,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:33:06,859 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:33:06,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:33:06,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:33:06,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:33:06,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:33:06,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:33:06,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:33:06,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:33:06,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:33:06,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:33:06,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:33:07,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:33:07,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:33:07,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:33:07,149 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:33:07,149 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:33:07,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-26 22:33:08,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:33:08,272 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:33:08,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-26 22:33:08,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575e5cc0b/4868375ea8944205bd9b75514014a1ae/FLAGd0c2d63e4 [2023-08-26 22:33:08,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575e5cc0b/4868375ea8944205bd9b75514014a1ae [2023-08-26 22:33:08,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:33:08,298 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:33:08,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:33:08,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:33:08,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:33:08,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2295dbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08, skipping insertion in model container [2023-08-26 22:33:08,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,331 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:33:08,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:33:08,627 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:33:08,648 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-26 22:33:08,655 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 22:33:08,655 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 22:33:08,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:33:08,722 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:33:08,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08 WrapperNode [2023-08-26 22:33:08,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:33:08,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:33:08,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:33:08,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:33:08,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,776 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-08-26 22:33:08,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:33:08,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:33:08,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:33:08,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:33:08,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:33:08,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:33:08,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:33:08,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:33:08,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (1/1) ... [2023-08-26 22:33:08,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:33:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:33:08,829 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 22:33:08,849 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 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:33:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:33:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:33:08,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:33:08,865 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 22:33:08,951 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:33:08,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:33:09,085 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:33:09,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:33:09,090 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:33:09,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:33:09 BoogieIcfgContainer [2023-08-26 22:33:09,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:33:09,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:33:09,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:33:09,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:33:09,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:33:08" (1/3) ... [2023-08-26 22:33:09,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14642d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:33:09, skipping insertion in model container [2023-08-26 22:33:09,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:33:08" (2/3) ... [2023-08-26 22:33:09,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14642d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:33:09, skipping insertion in model container [2023-08-26 22:33:09,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:33:09" (3/3) ... [2023-08-26 22:33:09,097 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-26 22:33:09,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:33:09,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 22:33:09,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:33:09,159 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:33:09,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 147 transitions, 302 flow [2023-08-26 22:33:09,220 INFO L124 PetriNetUnfolderBase]: 25/199 cut-off events. [2023-08-26 22:33:09,220 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:33:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 199 events. 25/199 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 496 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-26 22:33:09,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 147 transitions, 302 flow [2023-08-26 22:33:09,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 144 transitions, 296 flow [2023-08-26 22:33:09,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:33:09,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 144 transitions, 296 flow [2023-08-26 22:33:09,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 144 transitions, 296 flow [2023-08-26 22:33:09,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 144 transitions, 296 flow [2023-08-26 22:33:09,293 INFO L124 PetriNetUnfolderBase]: 24/196 cut-off events. [2023-08-26 22:33:09,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:33:09,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 196 events. 24/196 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 496 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-26 22:33:09,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-26 22:33:12,357 INFO L134 LiptonReduction]: Checked pairs total: 6988 [2023-08-26 22:33:12,357 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-26 22:33:12,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:33:12,372 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@778704ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:33:12,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 22:33:12,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:33:12,376 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 22:33:12,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:33:12,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:12,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:33:12,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:33:12,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 18365, now seen corresponding path program 1 times [2023-08-26 22:33:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246313120] [2023-08-26 22:33:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:12,553 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 22:33:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246313120] [2023-08-26 22:33:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246313120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661402886] [2023-08-26 22:33:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:12,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:12,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-26 22:33:12,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 98 flow. Second operand has 3 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 22:33:12,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:12,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-26 22:33:12,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:12,683 INFO L124 PetriNetUnfolderBase]: 169/370 cut-off events. [2023-08-26 22:33:12,683 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:33:12,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 370 events. 169/370 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2011 event pairs, 0 based on Foata normal form. 14/249 useless extension candidates. Maximal degree in co-relation 701. Up to 342 conditions per place. [2023-08-26 22:33:12,688 INFO L140 encePairwiseOnDemand]: 274/291 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-26 22:33:12,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 188 flow [2023-08-26 22:33:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-26 22:33:12,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005727376861397 [2023-08-26 22:33:12,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-26 22:33:12,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-26 22:33:12,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:12,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-26 22:33:12,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 22:33:12,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 22:33:12,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 22:33:12,718 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 98 flow. Second operand 3 states and 437 transitions. [2023-08-26 22:33:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 188 flow [2023-08-26 22:33:12,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:33:12,723 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 88 flow [2023-08-26 22:33:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-26 22:33:12,727 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-08-26 22:33:12,728 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 88 flow [2023-08-26 22:33:12,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:33:12,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:12,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:33:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:33:12,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:33:12,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:12,734 INFO L85 PathProgramCache]: Analyzing trace with hash 545992597, now seen corresponding path program 1 times [2023-08-26 22:33:12,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:12,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134501057] [2023-08-26 22:33:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:12,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:12,850 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 22:33:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134501057] [2023-08-26 22:33:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134501057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:33:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439143781] [2023-08-26 22:33:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:12,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:12,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:33:12,863 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 22:33:12,901 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 22:33:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:12,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:33:12,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:33:13,020 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 22:33:13,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:33:13,034 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 22:33:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439143781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:33:13,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:33:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 22:33:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485659717] [2023-08-26 22:33:13,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:33:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:33:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:33:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:33:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-26 22:33:13,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states 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 22:33:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:13,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-26 22:33:13,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:13,088 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-26 22:33:13,088 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 22:33:13,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 68 events. 24/68 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 165 event pairs, 11 based on Foata normal form. 13/69 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2023-08-26 22:33:13,089 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 27 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-26 22:33:13,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 131 flow [2023-08-26 22:33:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:33:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:33:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2023-08-26 22:33:13,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45446735395189003 [2023-08-26 22:33:13,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 529 transitions. [2023-08-26 22:33:13,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 529 transitions. [2023-08-26 22:33:13,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:13,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 529 transitions. [2023-08-26 22:33:13,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 22:33:13,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states 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 22:33:13,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states 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 22:33:13,098 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 88 flow. Second operand 4 states and 529 transitions. [2023-08-26 22:33:13,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 131 flow [2023-08-26 22:33:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 125 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:33:13,103 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 45 flow [2023-08-26 22:33:13,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-26 22:33:13,103 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -14 predicate places. [2023-08-26 22:33:13,104 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 45 flow [2023-08-26 22:33:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states 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 22:33:13,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:13,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:33:13,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:33:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:13,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:33:13,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash -254135270, now seen corresponding path program 1 times [2023-08-26 22:33:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397441173] [2023-08-26 22:33:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:13,405 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 22:33:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397441173] [2023-08-26 22:33:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397441173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051836730] [2023-08-26 22:33:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:13,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 291 [2023-08-26 22:33:13,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 22:33:13,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:13,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 291 [2023-08-26 22:33:13,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:13,428 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2023-08-26 22:33:13,429 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 22:33:13,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 59 events. 20/59 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 4 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 116. Up to 41 conditions per place. [2023-08-26 22:33:13,429 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-26 22:33:13,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 79 flow [2023-08-26 22:33:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-08-26 22:33:13,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536082474226804 [2023-08-26 22:33:13,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-08-26 22:33:13,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-08-26 22:33:13,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:13,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-08-26 22:33:13,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 22:33:13,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 22:33:13,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 22:33:13,433 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 45 flow. Second operand 3 states and 396 transitions. [2023-08-26 22:33:13,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 79 flow [2023-08-26 22:33:13,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:33:13,434 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 42 flow [2023-08-26 22:33:13,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-26 22:33:13,434 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -16 predicate places. [2023-08-26 22:33:13,434 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 42 flow [2023-08-26 22:33:13,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 22:33:13,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:13,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:33:13,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:33:13,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:33:13,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash -254099860, now seen corresponding path program 1 times [2023-08-26 22:33:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:13,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246838112] [2023-08-26 22:33:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:13,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:33:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:13,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:33:13,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:33:13,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-26 22:33:13,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 22:33:13,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 22:33:13,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (10 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 22:33:13,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 22:33:13,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 22:33:13,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 22:33:13,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 22:33:13,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 22:33:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:33:13,489 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 22:33:13,491 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:33:13,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:33:13,509 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:33:13,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,545 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-26 22:33:13,545 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:33:13,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-26 22:33:13,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:33:13,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-26 22:33:13,572 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-26 22:33:13,572 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:33:13,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-26 22:33:13,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 12888 [2023-08-26 22:33:16,382 INFO L134 LiptonReduction]: Checked pairs total: 33005 [2023-08-26 22:33:16,382 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-26 22:33:16,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:33:16,384 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;@778704ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:33:16,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 22:33:16,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:33:16,385 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 22:33:16,385 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:33:16,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:16,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:33:16,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:16,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:16,386 INFO L85 PathProgramCache]: Analyzing trace with hash 30684, now seen corresponding path program 1 times [2023-08-26 22:33:16,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:16,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618906751] [2023-08-26 22:33:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:16,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:33:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618906751] [2023-08-26 22:33:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618906751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931398180] [2023-08-26 22:33:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-26 22:33:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 73 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 22:33:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-26 22:33:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:17,073 INFO L124 PetriNetUnfolderBase]: 7074/11315 cut-off events. [2023-08-26 22:33:17,073 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-26 22:33:17,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22455 conditions, 11315 events. 7074/11315 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 72861 event pairs, 3234 based on Foata normal form. 503/7822 useless extension candidates. Maximal degree in co-relation 2412. Up to 11011 conditions per place. [2023-08-26 22:33:17,213 INFO L140 encePairwiseOnDemand]: 324/347 looper letters, 66 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-26 22:33:17,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 300 flow [2023-08-26 22:33:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-26 22:33:17,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350624399615754 [2023-08-26 22:33:17,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-26 22:33:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-26 22:33:17,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:17,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-26 22:33:17,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 22:33:17,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:17,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:17,218 INFO L175 Difference]: Start difference. First operand has 60 places, 73 transitions, 164 flow. Second operand 3 states and 557 transitions. [2023-08-26 22:33:17,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 300 flow [2023-08-26 22:33:17,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:33:17,221 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 154 flow [2023-08-26 22:33:17,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-26 22:33:17,223 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-26 22:33:17,223 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 154 flow [2023-08-26 22:33:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 22:33:17,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:17,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:33:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:33:17,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:17,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1731773959, now seen corresponding path program 1 times [2023-08-26 22:33:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640546303] [2023-08-26 22:33:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:33:17,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640546303] [2023-08-26 22:33:17,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640546303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:17,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:17,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:17,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105202711] [2023-08-26 22:33:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:17,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:17,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:17,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:17,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 347 [2023-08-26 22:33:17,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 22:33:17,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:17,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 347 [2023-08-26 22:33:17,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:17,841 INFO L124 PetriNetUnfolderBase]: 6640/10454 cut-off events. [2023-08-26 22:33:17,841 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-08-26 22:33:17,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22324 conditions, 10454 events. 6640/10454 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 64365 event pairs, 6384 based on Foata normal form. 0/7043 useless extension candidates. Maximal degree in co-relation 22219. Up to 10353 conditions per place. [2023-08-26 22:33:17,911 INFO L140 encePairwiseOnDemand]: 345/347 looper letters, 51 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-26 22:33:17,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 254 flow [2023-08-26 22:33:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-26 22:33:17,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48222862632084534 [2023-08-26 22:33:17,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-26 22:33:17,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-26 22:33:17,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:17,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-26 22:33:17,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 22:33:17,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:17,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:17,919 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 154 flow. Second operand 3 states and 502 transitions. [2023-08-26 22:33:17,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 254 flow [2023-08-26 22:33:17,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:33:17,923 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 150 flow [2023-08-26 22:33:17,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-26 22:33:17,926 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-26 22:33:17,927 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 150 flow [2023-08-26 22:33:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 22:33:17,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:17,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:33:17,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:33:17,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:17,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:17,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1731773958, now seen corresponding path program 1 times [2023-08-26 22:33:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221043809] [2023-08-26 22:33:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:17,972 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 22:33:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221043809] [2023-08-26 22:33:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221043809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:33:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349464864] [2023-08-26 22:33:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:33:17,990 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 22:33:17,991 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 22:33:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:18,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:33:18,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:33:18,066 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 22:33:18,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:33:18,077 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 22:33:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349464864] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:33:18,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:33:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 22:33:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065159350] [2023-08-26 22:33:18,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:33:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:33:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:33:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:33:18,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-26 22:33:18,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 22:33:18,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:18,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-26 22:33:18,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:18,379 INFO L124 PetriNetUnfolderBase]: 1498/2702 cut-off events. [2023-08-26 22:33:18,379 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2023-08-26 22:33:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16254 event pairs, 0 based on Foata normal form. 240/2224 useless extension candidates. Maximal degree in co-relation 6107. Up to 1290 conditions per place. [2023-08-26 22:33:18,387 INFO L140 encePairwiseOnDemand]: 340/347 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-26 22:33:18,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 458 flow [2023-08-26 22:33:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:33:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:33:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2023-08-26 22:33:18,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49855907780979825 [2023-08-26 22:33:18,390 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2023-08-26 22:33:18,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2023-08-26 22:33:18,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:18,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2023-08-26 22:33:18,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 22:33:18,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states 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 22:33:18,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states 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 22:33:18,410 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 150 flow. Second operand 6 states and 1038 transitions. [2023-08-26 22:33:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 458 flow [2023-08-26 22:33:18,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 111 transitions, 455 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:33:18,414 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 105 flow [2023-08-26 22:33:18,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-26 22:33:18,415 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2023-08-26 22:33:18,415 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 105 flow [2023-08-26 22:33:18,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 22:33:18,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:18,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:18,422 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 22:33:18,616 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,SelfDestructingSolverStorable6 [2023-08-26 22:33:18,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:18,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2137850520, now seen corresponding path program 1 times [2023-08-26 22:33:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:18,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427877785] [2023-08-26 22:33:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:18,645 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 22:33:18,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:18,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427877785] [2023-08-26 22:33:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427877785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991256588] [2023-08-26 22:33:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:18,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 347 [2023-08-26 22:33:18,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 22:33:18,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:18,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 347 [2023-08-26 22:33:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:18,764 INFO L124 PetriNetUnfolderBase]: 1352/2239 cut-off events. [2023-08-26 22:33:18,765 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2023-08-26 22:33:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 2239 events. 1352/2239 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12257 event pairs, 506 based on Foata normal form. 0/1643 useless extension candidates. Maximal degree in co-relation 5340. Up to 2046 conditions per place. [2023-08-26 22:33:18,772 INFO L140 encePairwiseOnDemand]: 340/347 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-26 22:33:18,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 244 flow [2023-08-26 22:33:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-26 22:33:18,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860710854947166 [2023-08-26 22:33:18,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-26 22:33:18,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-26 22:33:18,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:18,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-26 22:33:18,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 22:33:18,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:18,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:18,776 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 105 flow. Second operand 3 states and 506 transitions. [2023-08-26 22:33:18,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 244 flow [2023-08-26 22:33:18,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 229 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 22:33:18,778 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 121 flow [2023-08-26 22:33:18,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-26 22:33:18,779 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2023-08-26 22:33:18,779 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 121 flow [2023-08-26 22:33:18,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 22:33:18,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:18,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:33:18,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:33:18,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:18,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -130991529, now seen corresponding path program 1 times [2023-08-26 22:33:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970937754] [2023-08-26 22:33:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:18,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:18,812 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 22:33:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970937754] [2023-08-26 22:33:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970937754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:18,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:33:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430493624] [2023-08-26 22:33:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:18,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:18,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-26 22:33:18,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:18,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:18,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-26 22:33:18,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:18,894 INFO L124 PetriNetUnfolderBase]: 972/1650 cut-off events. [2023-08-26 22:33:18,894 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-08-26 22:33:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 1650 events. 972/1650 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8370 event pairs, 945 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 3754. Up to 1628 conditions per place. [2023-08-26 22:33:18,899 INFO L140 encePairwiseOnDemand]: 345/347 looper letters, 35 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-26 22:33:18,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 189 flow [2023-08-26 22:33:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-26 22:33:18,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47646493756003844 [2023-08-26 22:33:18,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-26 22:33:18,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-26 22:33:18,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:18,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-26 22:33:18,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 22:33:18,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:18,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 22:33:18,903 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 121 flow. Second operand 3 states and 496 transitions. [2023-08-26 22:33:18,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 189 flow [2023-08-26 22:33:18,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:33:18,904 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 116 flow [2023-08-26 22:33:18,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-26 22:33:18,904 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -10 predicate places. [2023-08-26 22:33:18,904 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 116 flow [2023-08-26 22:33:18,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:18,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:33:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:33:18,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:33:18,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1328733180, now seen corresponding path program 1 times [2023-08-26 22:33:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386979742] [2023-08-26 22:33:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:18,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:33:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:18,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:33:18,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (14 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-26 22:33:18,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 22:33:18,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-26 22:33:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:33:18,924 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 22:33:18,924 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:33:18,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:33:18,939 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:33:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:18,973 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-08-26 22:33:18,974 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:33:18,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1744 event pairs, 1 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-26 22:33:18,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:18,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:18,978 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:33:18,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:18,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 476 flow [2023-08-26 22:33:19,005 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-08-26 22:33:19,005 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:33:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1744 event pairs, 1 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-26 22:33:19,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 23544 [2023-08-26 22:33:22,184 INFO L134 LiptonReduction]: Checked pairs total: 58250 [2023-08-26 22:33:22,184 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-26 22:33:22,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:33:22,185 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;@778704ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:33:22,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-26 22:33:22,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:33:22,186 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 22:33:22,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:33:22,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:22,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:33:22,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:22,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash 45053, now seen corresponding path program 1 times [2023-08-26 22:33:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41206717] [2023-08-26 22:33:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:22,200 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 22:33:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41206717] [2023-08-26 22:33:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41206717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:22,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416026560] [2023-08-26 22:33:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:22,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:22,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:22,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-26 22:33:22,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 22:33:22,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:22,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-26 22:33:22,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:31,584 INFO L124 PetriNetUnfolderBase]: 133747/188970 cut-off events. [2023-08-26 22:33:31,584 INFO L125 PetriNetUnfolderBase]: For 2601/2601 co-relation queries the response was YES. [2023-08-26 22:33:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374610 conditions, 188970 events. 133747/188970 cut-off events. For 2601/2601 co-relation queries the response was YES. Maximal size of possible extension queue 6609. Compared 1476396 event pairs, 84941 based on Foata normal form. 20798/142912 useless extension candidates. Maximal degree in co-relation 24728. Up to 183893 conditions per place. [2023-08-26 22:33:32,471 INFO L140 encePairwiseOnDemand]: 382/411 looper letters, 79 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-26 22:33:32,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 372 flow [2023-08-26 22:33:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-26 22:33:32,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401459854014599 [2023-08-26 22:33:32,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-26 22:33:32,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-26 22:33:32,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:32,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-26 22:33:32,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 22:33:32,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:32,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:32,476 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 222 flow. Second operand 3 states and 666 transitions. [2023-08-26 22:33:32,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 372 flow [2023-08-26 22:33:32,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:33:32,482 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 200 flow [2023-08-26 22:33:32,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-26 22:33:32,483 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-26 22:33:32,483 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 200 flow [2023-08-26 22:33:32,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 22:33:32,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:32,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:33:32,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:33:32,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:32,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1340140973, now seen corresponding path program 1 times [2023-08-26 22:33:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189988823] [2023-08-26 22:33:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:32,511 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 22:33:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189988823] [2023-08-26 22:33:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189988823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:33:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81396517] [2023-08-26 22:33:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:32,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:33:32,513 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 22:33:32,519 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 22:33:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:32,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:33:32,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:33:32,588 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 22:33:32,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:33:32,602 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 22:33:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81396517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:33:32,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:33:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 22:33:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020091805] [2023-08-26 22:33:32,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:33:32,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:33:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:33:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:33:32,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-26 22:33:32,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 22:33:32,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:32,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-26 22:33:32,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:34,782 INFO L124 PetriNetUnfolderBase]: 29173/44297 cut-off events. [2023-08-26 22:33:34,782 INFO L125 PetriNetUnfolderBase]: For 11730/11730 co-relation queries the response was YES. [2023-08-26 22:33:34,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100122 conditions, 44297 events. 29173/44297 cut-off events. For 11730/11730 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 343264 event pairs, 0 based on Foata normal form. 2940/34460 useless extension candidates. Maximal degree in co-relation 9900. Up to 20666 conditions per place. [2023-08-26 22:33:35,006 INFO L140 encePairwiseOnDemand]: 403/411 looper letters, 164 selfloop transitions, 6 changer transitions 0/178 dead transitions. [2023-08-26 22:33:35,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 178 transitions, 731 flow [2023-08-26 22:33:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:33:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:33:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1472 transitions. [2023-08-26 22:33:35,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116440736878693 [2023-08-26 22:33:35,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1472 transitions. [2023-08-26 22:33:35,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1472 transitions. [2023-08-26 22:33:35,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:35,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1472 transitions. [2023-08-26 22:33:35,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.28571428571428) internal successors, (1472), 7 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 22:33:35,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:35,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:35,015 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 200 flow. Second operand 7 states and 1472 transitions. [2023-08-26 22:33:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 178 transitions, 731 flow [2023-08-26 22:33:35,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 723 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 22:33:35,025 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 153 flow [2023-08-26 22:33:35,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-08-26 22:33:35,026 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-26 22:33:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 153 flow [2023-08-26 22:33:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 22:33:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:35,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:35,033 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 22:33:35,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:35,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:35,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1414812672, now seen corresponding path program 1 times [2023-08-26 22:33:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331814736] [2023-08-26 22:33:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:35,253 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 22:33:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331814736] [2023-08-26 22:33:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331814736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116501642] [2023-08-26 22:33:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:35,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 411 [2023-08-26 22:33:35,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 22:33:35,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:35,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 411 [2023-08-26 22:33:35,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:37,625 INFO L124 PetriNetUnfolderBase]: 33178/49005 cut-off events. [2023-08-26 22:33:37,625 INFO L125 PetriNetUnfolderBase]: For 11872/11872 co-relation queries the response was YES. [2023-08-26 22:33:37,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112737 conditions, 49005 events. 33178/49005 cut-off events. For 11872/11872 co-relation queries the response was YES. Maximal size of possible extension queue 2252. Compared 371799 event pairs, 14932 based on Foata normal form. 0/35017 useless extension candidates. Maximal degree in co-relation 98798. Up to 34155 conditions per place. [2023-08-26 22:33:37,987 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 77 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2023-08-26 22:33:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 445 flow [2023-08-26 22:33:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-26 22:33:37,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060827250608273 [2023-08-26 22:33:37,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-26 22:33:37,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-26 22:33:37,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:37,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-26 22:33:37,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 22:33:38,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:38,000 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 153 flow. Second operand 3 states and 624 transitions. [2023-08-26 22:33:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 445 flow [2023-08-26 22:33:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 422 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-26 22:33:38,007 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 252 flow [2023-08-26 22:33:38,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-26 22:33:38,008 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2023-08-26 22:33:38,008 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 252 flow [2023-08-26 22:33:38,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 22:33:38,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:38,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:38,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:33:38,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:38,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1414812780, now seen corresponding path program 1 times [2023-08-26 22:33:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063161434] [2023-08-26 22:33:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:38,025 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 22:33:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063161434] [2023-08-26 22:33:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063161434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323006121] [2023-08-26 22:33:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:38,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:38,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 411 [2023-08-26 22:33:38,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 22:33:38,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:38,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 411 [2023-08-26 22:33:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:40,706 INFO L124 PetriNetUnfolderBase]: 34653/51749 cut-off events. [2023-08-26 22:33:40,709 INFO L125 PetriNetUnfolderBase]: For 20190/20602 co-relation queries the response was YES. [2023-08-26 22:33:40,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132354 conditions, 51749 events. 34653/51749 cut-off events. For 20190/20602 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 405434 event pairs, 12992 based on Foata normal form. 1315/48848 useless extension candidates. Maximal degree in co-relation 118054. Up to 38782 conditions per place. [2023-08-26 22:33:40,953 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 89 selfloop transitions, 16 changer transitions 0/113 dead transitions. [2023-08-26 22:33:40,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 606 flow [2023-08-26 22:33:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:33:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:33:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-26 22:33:40,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060827250608273 [2023-08-26 22:33:40,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-26 22:33:40,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-26 22:33:40,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:40,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-26 22:33:40,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 22:33:40,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:40,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:40,978 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 252 flow. Second operand 3 states and 624 transitions. [2023-08-26 22:33:40,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 606 flow [2023-08-26 22:33:41,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:33:41,123 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 398 flow [2023-08-26 22:33:41,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2023-08-26 22:33:41,124 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2023-08-26 22:33:41,124 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 398 flow [2023-08-26 22:33:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 22:33:41,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:41,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:33:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:33:41,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:41,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1876326866, now seen corresponding path program 1 times [2023-08-26 22:33:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138722223] [2023-08-26 22:33:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:41,148 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 22:33:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138722223] [2023-08-26 22:33:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138722223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:33:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420110989] [2023-08-26 22:33:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:33:41,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:33:41,150 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 22:33:41,152 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 22:33:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:41,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:33:41,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:33:41,218 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 22:33:41,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:33:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420110989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:33:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:33:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587005158] [2023-08-26 22:33:41,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:41,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:33:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:33:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:33:41,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-26 22:33:41,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 22:33:41,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:41,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-26 22:33:41,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:43,138 INFO L124 PetriNetUnfolderBase]: 25038/38197 cut-off events. [2023-08-26 22:33:43,138 INFO L125 PetriNetUnfolderBase]: For 32673/33114 co-relation queries the response was YES. [2023-08-26 22:33:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106829 conditions, 38197 events. 25038/38197 cut-off events. For 32673/33114 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 292562 event pairs, 15348 based on Foata normal form. 18/38057 useless extension candidates. Maximal degree in co-relation 37598. Up to 37235 conditions per place. [2023-08-26 22:33:43,301 INFO L140 encePairwiseOnDemand]: 408/411 looper letters, 85 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-26 22:33:43,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 610 flow [2023-08-26 22:33:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:33:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:33:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 796 transitions. [2023-08-26 22:33:43,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48418491484184917 [2023-08-26 22:33:43,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 796 transitions. [2023-08-26 22:33:43,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 796 transitions. [2023-08-26 22:33:43,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:43,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 796 transitions. [2023-08-26 22:33:43,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 22:33:43,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 22:33:43,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 22:33:43,307 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 398 flow. Second operand 4 states and 796 transitions. [2023-08-26 22:33:43,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 610 flow [2023-08-26 22:33:43,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:33:43,701 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 362 flow [2023-08-26 22:33:43,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2023-08-26 22:33:43,702 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2023-08-26 22:33:43,702 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 362 flow [2023-08-26 22:33:43,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 22:33:43,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:43,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:43,721 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 22:33:43,906 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,SelfDestructingSolverStorable14 [2023-08-26 22:33:43,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:43,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1403191572, now seen corresponding path program 1 times [2023-08-26 22:33:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587103225] [2023-08-26 22:33:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:43,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:43,941 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 22:33:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587103225] [2023-08-26 22:33:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587103225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:43,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:33:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190534840] [2023-08-26 22:33:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:33:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:33:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:33:43,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-26 22:33:43,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 22:33:43,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:43,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-26 22:33:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:46,752 INFO L124 PetriNetUnfolderBase]: 31844/47255 cut-off events. [2023-08-26 22:33:46,752 INFO L125 PetriNetUnfolderBase]: For 22691/23159 co-relation queries the response was YES. [2023-08-26 22:33:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128626 conditions, 47255 events. 31844/47255 cut-off events. For 22691/23159 co-relation queries the response was YES. Maximal size of possible extension queue 2219. Compared 358162 event pairs, 5809 based on Foata normal form. 132/44485 useless extension candidates. Maximal degree in co-relation 128528. Up to 27434 conditions per place. [2023-08-26 22:33:47,007 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 171 selfloop transitions, 42 changer transitions 0/221 dead transitions. [2023-08-26 22:33:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 221 transitions, 1343 flow [2023-08-26 22:33:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:33:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:33:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1383 transitions. [2023-08-26 22:33:47,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807090719499479 [2023-08-26 22:33:47,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1383 transitions. [2023-08-26 22:33:47,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1383 transitions. [2023-08-26 22:33:47,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:47,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1383 transitions. [2023-08-26 22:33:47,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 22:33:47,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:47,016 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:47,016 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 362 flow. Second operand 7 states and 1383 transitions. [2023-08-26 22:33:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 221 transitions, 1343 flow [2023-08-26 22:33:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 221 transitions, 1336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:33:47,022 INFO L231 Difference]: Finished difference. Result has 79 places, 113 transitions, 751 flow [2023-08-26 22:33:47,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=79, PETRI_TRANSITIONS=113} [2023-08-26 22:33:47,023 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2023-08-26 22:33:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 113 transitions, 751 flow [2023-08-26 22:33:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 22:33:47,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:47,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 22:33:47,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:47,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1403191526, now seen corresponding path program 1 times [2023-08-26 22:33:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885206824] [2023-08-26 22:33:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:47,053 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 22:33:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885206824] [2023-08-26 22:33:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885206824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:33:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417837528] [2023-08-26 22:33:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:47,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:33:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:33:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:33:47,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-26 22:33:47,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 113 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 22:33:47,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:47,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-26 22:33:47,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:33:50,322 INFO L124 PetriNetUnfolderBase]: 32404/48895 cut-off events. [2023-08-26 22:33:50,323 INFO L125 PetriNetUnfolderBase]: For 91842/92747 co-relation queries the response was YES. [2023-08-26 22:33:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158589 conditions, 48895 events. 32404/48895 cut-off events. For 91842/92747 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 384040 event pairs, 7647 based on Foata normal form. 1566/50409 useless extension candidates. Maximal degree in co-relation 158489. Up to 28909 conditions per place. [2023-08-26 22:33:50,640 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 213 selfloop transitions, 70 changer transitions 0/291 dead transitions. [2023-08-26 22:33:50,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 291 transitions, 2254 flow [2023-08-26 22:33:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:33:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:33:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1414 transitions. [2023-08-26 22:33:50,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49148418491484186 [2023-08-26 22:33:50,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1414 transitions. [2023-08-26 22:33:50,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1414 transitions. [2023-08-26 22:33:50,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:33:50,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1414 transitions. [2023-08-26 22:33:50,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states 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 22:33:50,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:50,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:33:50,649 INFO L175 Difference]: Start difference. First operand has 79 places, 113 transitions, 751 flow. Second operand 7 states and 1414 transitions. [2023-08-26 22:33:50,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 291 transitions, 2254 flow [2023-08-26 22:33:50,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 291 transitions, 2254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:33:50,768 INFO L231 Difference]: Finished difference. Result has 90 places, 163 transitions, 1530 flow [2023-08-26 22:33:50,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=90, PETRI_TRANSITIONS=163} [2023-08-26 22:33:50,768 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2023-08-26 22:33:50,769 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 163 transitions, 1530 flow [2023-08-26 22:33:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 22:33:50,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:50,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:33:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 22:33:50,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-26 22:33:50,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash 672094217, now seen corresponding path program 1 times [2023-08-26 22:33:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522406329] [2023-08-26 22:33:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:50,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:33:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:33:50,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:33:50,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:33:50,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2023-08-26 22:33:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-26 22:33:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (18 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-26 22:33:50,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-26 22:33:50,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-26 22:33:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 22:33:50,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:33:50,791 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:33:50,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:33:50,805 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:33:50,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,035 INFO L124 PetriNetUnfolderBase]: 101/746 cut-off events. [2023-08-26 22:33:51,035 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:33:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 746 events. 101/746 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3006 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 514. Up to 32 conditions per place. [2023-08-26 22:33:51,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,045 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:33:51,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 566 flow [2023-08-26 22:33:51,095 INFO L124 PetriNetUnfolderBase]: 101/746 cut-off events. [2023-08-26 22:33:51,095 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:33:51,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 746 events. 101/746 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3006 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 514. Up to 32 conditions per place. [2023-08-26 22:33:51,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 37008 [2023-08-26 22:33:53,800 INFO L134 LiptonReduction]: Checked pairs total: 97338 [2023-08-26 22:33:53,800 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-26 22:33:53,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:33:53,804 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;@778704ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:33:53,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-26 22:33:53,805 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:33:53,805 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 22:33:53,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:33:53,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:33:53,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:33:53,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 22:33:53,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:33:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 61531, now seen corresponding path program 1 times [2023-08-26 22:33:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:33:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526981994] [2023-08-26 22:33:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:33:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:33:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:33:53,829 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 22:33:53,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:33:53,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526981994] [2023-08-26 22:33:53,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526981994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:33:53,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:33:53,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:33:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978132283] [2023-08-26 22:33:53,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:33:53,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:33:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:33:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:33:53,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:33:53,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 477 [2023-08-26 22:33:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:33:53,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:33:53,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 477 [2023-08-26 22:33:53,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand