/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:56:52,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:56:52,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 03:56:52,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:56:52,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:56:52,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:56:52,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:56:52,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:56:52,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:56:52,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:56:52,709 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:56:52,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:56:52,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:56:52,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:56:52,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:56:52,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:56:52,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:56:52,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:56:52,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:56:52,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:56:52,712 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:56:52,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:56:52,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:56:52,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:56:52,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:56:52,714 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:56:52,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:56:52,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:56:52,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:56:52,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:56:52,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:56:52,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:56:52,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:56:52,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:56:52,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:56:52,716 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:56:53,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:56:53,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:56:53,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:56:53,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:56:53,073 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:56:53,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-08-27 03:56:54,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:56:54,636 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:56:54,637 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-08-27 03:56:54,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b368e953/49a4cb527ce644a4915044bfe147f3af/FLAG6bf805072 [2023-08-27 03:56:54,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b368e953/49a4cb527ce644a4915044bfe147f3af [2023-08-27 03:56:54,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:56:54,679 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:56:54,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:56:54,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:56:54,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:56:54,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:56:54" (1/1) ... [2023-08-27 03:56:54,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4424e155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:54, skipping insertion in model container [2023-08-27 03:56:54,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:56:54" (1/1) ... [2023-08-27 03:56:54,739 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:56:55,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:56:55,061 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:56:55,084 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:56:55,086 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:56:55,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:56:55,138 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:56:55,138 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:56:55,144 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:56:55,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55 WrapperNode [2023-08-27 03:56:55,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:56:55,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:56:55,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:56:55,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:56:55,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,180 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 03:56:55,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:56:55,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:56:55,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:56:55,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:56:55,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:56:55,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:56:55,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:56:55,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:56:55,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (1/1) ... [2023-08-27 03:56:55,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:56:55,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:56:55,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 03:56:55,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 03:56:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:56:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:56:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:56:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:56:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:56:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:56:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:56:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:56:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:56:55,277 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:56:55,376 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:56:55,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:56:55,610 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:56:55,638 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:56:55,639 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:56:55,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:56:55 BoogieIcfgContainer [2023-08-27 03:56:55,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:56:55,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:56:55,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:56:55,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:56:55,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:56:54" (1/3) ... [2023-08-27 03:56:55,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9feefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:56:55, skipping insertion in model container [2023-08-27 03:56:55,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:55" (2/3) ... [2023-08-27 03:56:55,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9feefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:56:55, skipping insertion in model container [2023-08-27 03:56:55,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:56:55" (3/3) ... [2023-08-27 03:56:55,649 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-08-27 03:56:55,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:56:55,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:56:55,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:56:55,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:56:55,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:56:55,843 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:56:55,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:56:55,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:56:55,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:56:55,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-27 03:56:55,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:56:55,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:56:55,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:56:55,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-27 03:56:55,903 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:56:55,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:56:55,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:56:55,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 03:56:58,169 INFO L134 LiptonReduction]: Checked pairs total: 6325 [2023-08-27 03:56:58,169 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-27 03:56:58,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:56:58,186 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;@2354ad2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:56:58,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:56:58,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:56:58,190 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 03:56:58,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:56:58,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:58,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:56:58,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:58,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 336258923, now seen corresponding path program 1 times [2023-08-27 03:56:58,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:58,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9403165] [2023-08-27 03:56:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9403165] [2023-08-27 03:56:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9403165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:58,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:58,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:56:58,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520735454] [2023-08-27 03:56:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:58,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:56:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:56:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:56:58,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:56:58,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:58,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:56:58,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:58,619 INFO L124 PetriNetUnfolderBase]: 496/818 cut-off events. [2023-08-27 03:56:58,619 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 03:56:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 818 events. 496/818 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3745 event pairs, 127 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 1651. Up to 710 conditions per place. [2023-08-27 03:56:58,628 INFO L140 encePairwiseOnDemand]: 169/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-27 03:56:58,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-27 03:56:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:56:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:56:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-27 03:56:58,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046554934823091 [2023-08-27 03:56:58,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-27 03:56:58,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-27 03:56:58,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:58,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-27 03:56:58,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,658 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 3 states and 271 transitions. [2023-08-27 03:56:58,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-27 03:56:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:56:58,662 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-27 03:56:58,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 03:56:58,666 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-27 03:56:58,667 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-27 03:56:58,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:58,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:58,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:56:58,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:58,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1724779415, now seen corresponding path program 1 times [2023-08-27 03:56:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434509611] [2023-08-27 03:56:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:58,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:58,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434509611] [2023-08-27 03:56:58,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434509611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:58,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:58,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:56:58,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341305927] [2023-08-27 03:56:58,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:58,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:56:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:56:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:56:58,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-08-27 03:56:58,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:58,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:58,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-08-27 03:56:58,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:59,019 INFO L124 PetriNetUnfolderBase]: 490/875 cut-off events. [2023-08-27 03:56:59,020 INFO L125 PetriNetUnfolderBase]: For 128/133 co-relation queries the response was YES. [2023-08-27 03:56:59,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 875 events. 490/875 cut-off events. For 128/133 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4612 event pairs, 158 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 2125. Up to 693 conditions per place. [2023-08-27 03:56:59,027 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-27 03:56:59,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 185 flow [2023-08-27 03:56:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:56:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:56:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-27 03:56:59,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934823091247672 [2023-08-27 03:56:59,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-27 03:56:59,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-27 03:56:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:59,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-27 03:56:59,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,033 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 265 transitions. [2023-08-27 03:56:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 185 flow [2023-08-27 03:56:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:56:59,034 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 105 flow [2023-08-27 03:56:59,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-27 03:56:59,035 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-27 03:56:59,035 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 105 flow [2023-08-27 03:56:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:59,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:56:59,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:59,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555324, now seen corresponding path program 1 times [2023-08-27 03:56:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107025717] [2023-08-27 03:56:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:59,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:59,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107025717] [2023-08-27 03:56:59,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107025717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:59,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:56:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276713663] [2023-08-27 03:56:59,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:56:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:56:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:56:59,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 179 [2023-08-27 03:56:59,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:59,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 179 [2023-08-27 03:56:59,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:59,284 INFO L124 PetriNetUnfolderBase]: 407/764 cut-off events. [2023-08-27 03:56:59,284 INFO L125 PetriNetUnfolderBase]: For 235/249 co-relation queries the response was YES. [2023-08-27 03:56:59,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 764 events. 407/764 cut-off events. For 235/249 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4364 event pairs, 128 based on Foata normal form. 12/635 useless extension candidates. Maximal degree in co-relation 1930. Up to 485 conditions per place. [2023-08-27 03:56:59,289 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 31 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-27 03:56:59,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 210 flow [2023-08-27 03:56:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:56:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:56:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-27 03:56:59,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-08-27 03:56:59,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-27 03:56:59,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-27 03:56:59,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:59,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-27 03:56:59,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,294 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 105 flow. Second operand 3 states and 264 transitions. [2023-08-27 03:56:59,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 210 flow [2023-08-27 03:56:59,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:56:59,295 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 110 flow [2023-08-27 03:56:59,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-27 03:56:59,296 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-27 03:56:59,296 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 110 flow [2023-08-27 03:56:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:56:59,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:59,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1536431589, now seen corresponding path program 1 times [2023-08-27 03:56:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648843919] [2023-08-27 03:56:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:59,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648843919] [2023-08-27 03:56:59,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648843919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:59,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:59,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:56:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714958271] [2023-08-27 03:56:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:59,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:56:59,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:56:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:56:59,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:56:59,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:59,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:56:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:59,451 INFO L124 PetriNetUnfolderBase]: 347/589 cut-off events. [2023-08-27 03:56:59,451 INFO L125 PetriNetUnfolderBase]: For 261/269 co-relation queries the response was YES. [2023-08-27 03:56:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 589 events. 347/589 cut-off events. For 261/269 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2581 event pairs, 78 based on Foata normal form. 6/492 useless extension candidates. Maximal degree in co-relation 1659. Up to 475 conditions per place. [2023-08-27 03:56:59,455 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 29 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-27 03:56:59,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 201 flow [2023-08-27 03:56:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:56:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:56:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-27 03:56:59,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2023-08-27 03:56:59,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-27 03:56:59,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-27 03:56:59,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:59,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-27 03:56:59,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,460 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 110 flow. Second operand 4 states and 342 transitions. [2023-08-27 03:56:59,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 201 flow [2023-08-27 03:56:59,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:56:59,462 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 102 flow [2023-08-27 03:56:59,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-27 03:56:59,463 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-27 03:56:59,463 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 102 flow [2023-08-27 03:56:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:59,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:59,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:56:59,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:59,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1990013980, now seen corresponding path program 1 times [2023-08-27 03:56:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442643845] [2023-08-27 03:56:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:59,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442643845] [2023-08-27 03:56:59,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442643845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:59,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:56:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624927435] [2023-08-27 03:56:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:59,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:56:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:56:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:56:59,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:56:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:56:59,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:59,608 INFO L124 PetriNetUnfolderBase]: 236/408 cut-off events. [2023-08-27 03:56:59,608 INFO L125 PetriNetUnfolderBase]: For 306/314 co-relation queries the response was YES. [2023-08-27 03:56:59,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 408 events. 236/408 cut-off events. For 306/314 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1621 event pairs, 50 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 1170. Up to 167 conditions per place. [2023-08-27 03:56:59,612 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 37 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-08-27 03:56:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 262 flow [2023-08-27 03:56:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:56:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:56:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-27 03:56:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930167597765363 [2023-08-27 03:56:59,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-27 03:56:59,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-27 03:56:59,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:59,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-27 03:56:59,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,618 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,618 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 102 flow. Second operand 4 states and 353 transitions. [2023-08-27 03:56:59,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 262 flow [2023-08-27 03:56:59,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:56:59,621 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 141 flow [2023-08-27 03:56:59,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-27 03:56:59,623 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-27 03:56:59,623 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 141 flow [2023-08-27 03:56:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:59,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:59,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:56:59,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:59,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 378319449, now seen corresponding path program 1 times [2023-08-27 03:56:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:59,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224001731] [2023-08-27 03:56:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:59,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224001731] [2023-08-27 03:56:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224001731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:56:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:56:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996383303] [2023-08-27 03:56:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:56:59,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:56:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:56:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:56:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:56:59,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:56:59,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:56:59,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:56:59,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:56:59,874 INFO L124 PetriNetUnfolderBase]: 371/660 cut-off events. [2023-08-27 03:56:59,874 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2023-08-27 03:56:59,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 660 events. 371/660 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3108 event pairs, 119 based on Foata normal form. 31/662 useless extension candidates. Maximal degree in co-relation 2114. Up to 237 conditions per place. [2023-08-27 03:56:59,879 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 45 selfloop transitions, 3 changer transitions 3/54 dead transitions. [2023-08-27 03:56:59,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 375 flow [2023-08-27 03:56:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:56:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:56:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-27 03:56:59,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48324022346368717 [2023-08-27 03:56:59,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-27 03:56:59,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-27 03:56:59,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:56:59,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-27 03:56:59,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,885 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 141 flow. Second operand 4 states and 346 transitions. [2023-08-27 03:56:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 375 flow [2023-08-27 03:56:59,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 341 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 03:56:59,888 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 146 flow [2023-08-27 03:56:59,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-27 03:56:59,889 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-27 03:56:59,889 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 146 flow [2023-08-27 03:56:59,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:56:59,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:56:59,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:56:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:56:59,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:56:59,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:56:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1155351834, now seen corresponding path program 1 times [2023-08-27 03:56:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:56:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413220582] [2023-08-27 03:56:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:56:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:56:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:56:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:56:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:56:59,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413220582] [2023-08-27 03:56:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413220582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:56:59,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:57:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492739399] [2023-08-27 03:57:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:57:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:57:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:57:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-27 03:57:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:00,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-27 03:57:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:00,111 INFO L124 PetriNetUnfolderBase]: 270/527 cut-off events. [2023-08-27 03:57:00,111 INFO L125 PetriNetUnfolderBase]: For 686/751 co-relation queries the response was YES. [2023-08-27 03:57:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 527 events. 270/527 cut-off events. For 686/751 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2636 event pairs, 68 based on Foata normal form. 124/619 useless extension candidates. Maximal degree in co-relation 1687. Up to 347 conditions per place. [2023-08-27 03:57:00,115 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 47 selfloop transitions, 8 changer transitions 3/62 dead transitions. [2023-08-27 03:57:00,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 408 flow [2023-08-27 03:57:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-27 03:57:00,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47262569832402235 [2023-08-27 03:57:00,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-27 03:57:00,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-27 03:57:00,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:00,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-27 03:57:00,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,120 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 146 flow. Second operand 5 states and 423 transitions. [2023-08-27 03:57:00,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 408 flow [2023-08-27 03:57:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:57:00,122 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 203 flow [2023-08-27 03:57:00,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-27 03:57:00,123 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-27 03:57:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 203 flow [2023-08-27 03:57:00,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:00,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:00,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:57:00,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:00,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1946733182, now seen corresponding path program 1 times [2023-08-27 03:57:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76038952] [2023-08-27 03:57:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:00,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76038952] [2023-08-27 03:57:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76038952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:00,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:00,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:57:00,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003954342] [2023-08-27 03:57:00,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:00,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:57:00,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:57:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:57:00,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-27 03:57:00,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:00,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-27 03:57:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:00,354 INFO L124 PetriNetUnfolderBase]: 211/459 cut-off events. [2023-08-27 03:57:00,354 INFO L125 PetriNetUnfolderBase]: For 1170/1249 co-relation queries the response was YES. [2023-08-27 03:57:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 459 events. 211/459 cut-off events. For 1170/1249 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2415 event pairs, 39 based on Foata normal form. 121/542 useless extension candidates. Maximal degree in co-relation 1711. Up to 143 conditions per place. [2023-08-27 03:57:00,357 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 49 selfloop transitions, 15 changer transitions 3/71 dead transitions. [2023-08-27 03:57:00,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 489 flow [2023-08-27 03:57:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:57:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:57:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 03:57:00,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692737430167598 [2023-08-27 03:57:00,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 03:57:00,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 03:57:00,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:00,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 03:57:00,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,363 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,363 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 203 flow. Second operand 7 states and 588 transitions. [2023-08-27 03:57:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 489 flow [2023-08-27 03:57:00,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:57:00,368 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 265 flow [2023-08-27 03:57:00,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-08-27 03:57:00,368 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-27 03:57:00,369 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 265 flow [2023-08-27 03:57:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:00,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:00,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:57:00,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:00,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1792935395, now seen corresponding path program 1 times [2023-08-27 03:57:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:00,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783354642] [2023-08-27 03:57:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:00,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783354642] [2023-08-27 03:57:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783354642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:00,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:00,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:57:00,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343091102] [2023-08-27 03:57:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:00,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:57:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:57:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:57:00,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-27 03:57:00,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 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) [2023-08-27 03:57:00,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:00,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-27 03:57:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:00,606 INFO L124 PetriNetUnfolderBase]: 179/379 cut-off events. [2023-08-27 03:57:00,606 INFO L125 PetriNetUnfolderBase]: For 1188/1264 co-relation queries the response was YES. [2023-08-27 03:57:00,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 379 events. 179/379 cut-off events. For 1188/1264 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1869 event pairs, 19 based on Foata normal form. 78/452 useless extension candidates. Maximal degree in co-relation 1625. Up to 101 conditions per place. [2023-08-27 03:57:00,609 INFO L140 encePairwiseOnDemand]: 169/179 looper letters, 32 selfloop transitions, 17 changer transitions 13/66 dead transitions. [2023-08-27 03:57:00,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 495 flow [2023-08-27 03:57:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 03:57:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 03:57:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 739 transitions. [2023-08-27 03:57:00,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587212911235258 [2023-08-27 03:57:00,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 739 transitions. [2023-08-27 03:57:00,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 739 transitions. [2023-08-27 03:57:00,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:00,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 739 transitions. [2023-08-27 03:57:00,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.11111111111111) internal successors, (739), 9 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,616 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,616 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 265 flow. Second operand 9 states and 739 transitions. [2023-08-27 03:57:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 495 flow [2023-08-27 03:57:00,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 468 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 03:57:00,621 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 248 flow [2023-08-27 03:57:00,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=248, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2023-08-27 03:57:00,622 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-27 03:57:00,622 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 248 flow [2023-08-27 03:57:00,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 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) [2023-08-27 03:57:00,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:57:00,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:00,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:57:00,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:57:00,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:57:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 570330006, now seen corresponding path program 1 times [2023-08-27 03:57:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:57:00,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859211331] [2023-08-27 03:57:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:57:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:57:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:57:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:57:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:57:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859211331] [2023-08-27 03:57:00,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859211331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:57:00,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:57:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:57:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850927278] [2023-08-27 03:57:00,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:57:00,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:57:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:57:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:57:00,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:57:00,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:57:00,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:57:00,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:57:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:57:00,834 INFO L124 PetriNetUnfolderBase]: 355/707 cut-off events. [2023-08-27 03:57:00,834 INFO L125 PetriNetUnfolderBase]: For 2098/2098 co-relation queries the response was YES. [2023-08-27 03:57:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 707 events. 355/707 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3928 event pairs, 29 based on Foata normal form. 1/708 useless extension candidates. Maximal degree in co-relation 2976. Up to 318 conditions per place. [2023-08-27 03:57:00,838 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2023-08-27 03:57:00,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 83 transitions, 751 flow [2023-08-27 03:57:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:57:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:57:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2023-08-27 03:57:00,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491620111731844 [2023-08-27 03:57:00,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2023-08-27 03:57:00,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2023-08-27 03:57:00,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:57:00,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2023-08-27 03:57:00,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,843 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 248 flow. Second operand 5 states and 402 transitions. [2023-08-27 03:57:00,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 83 transitions, 751 flow [2023-08-27 03:57:00,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 552 flow, removed 18 selfloop flow, removed 14 redundant places. [2023-08-27 03:57:00,852 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-27 03:57:00,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-27 03:57:00,853 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-27 03:57:00,853 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-27 03:57:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:57:00,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:57:00,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:57:00,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:57:00,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:57:00,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:57:00,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:57:00,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:57:00,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:57:00,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:57:00,857 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:57:00,861 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:57:00,862 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:57:00,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:57:00 BasicIcfg [2023-08-27 03:57:00,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:57:00,865 INFO L158 Benchmark]: Toolchain (without parser) took 6185.47ms. Allocated memory was 356.5MB in the beginning and 455.1MB in the end (delta: 98.6MB). Free memory was 331.5MB in the beginning and 201.3MB in the end (delta: 130.2MB). Peak memory consumption was 230.5MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,865 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 356.5MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:57:00,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.69ms. Allocated memory is still 356.5MB. Free memory was 331.2MB in the beginning and 311.2MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.35ms. Allocated memory is still 356.5MB. Free memory was 311.2MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,866 INFO L158 Benchmark]: Boogie Preprocessor took 22.46ms. Allocated memory is still 356.5MB. Free memory was 309.2MB in the beginning and 307.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,866 INFO L158 Benchmark]: RCFGBuilder took 436.39ms. Allocated memory is still 356.5MB. Free memory was 307.4MB in the beginning and 292.0MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,866 INFO L158 Benchmark]: TraceAbstraction took 5221.40ms. Allocated memory was 356.5MB in the beginning and 455.1MB in the end (delta: 98.6MB). Free memory was 291.3MB in the beginning and 201.3MB in the end (delta: 90.0MB). Peak memory consumption was 190.6MB. Max. memory is 16.0GB. [2023-08-27 03:57:00,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 356.5MB. Free memory is still 332.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 462.69ms. Allocated memory is still 356.5MB. Free memory was 331.2MB in the beginning and 311.2MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.35ms. Allocated memory is still 356.5MB. Free memory was 311.2MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.46ms. Allocated memory is still 356.5MB. Free memory was 309.2MB in the beginning and 307.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 436.39ms. Allocated memory is still 356.5MB. Free memory was 307.4MB in the beginning and 292.0MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5221.40ms. Allocated memory was 356.5MB in the beginning and 455.1MB in the end (delta: 98.6MB). Free memory was 291.3MB in the beginning and 201.3MB in the end (delta: 90.0MB). Peak memory consumption was 190.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 99 PlacesBefore, 34 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 84 TotalNumberOfCompositions, 6325 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3584, independent: 3396, independent conditional: 0, independent unconditional: 3396, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1261, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3584, independent: 2183, independent conditional: 0, independent unconditional: 2183, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 1261, unknown conditional: 0, unknown unconditional: 1261] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 7 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=8, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:57:00,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...