/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:49:02,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:49:02,260 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 20:49:02,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:49:02,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:49:02,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:49:02,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:49:02,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:49:02,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:49:02,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:49:02,310 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:49:02,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:49:02,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:49:02,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:49:02,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:49:02,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:49:02,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:49:02,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:49:02,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:49:02,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:49:02,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:49:02,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:49:02,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:49:02,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:49:02,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:49:02,316 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:49:02,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:49:02,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:49:02,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:49:02,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:49:02,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:49:02,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:49:02,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:49:02,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:49:02,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:49:02,319 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:49:02,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:49:02,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:49:02,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:49:02,679 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:49:02,680 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:49:02,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-26 20:49:03,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:49:04,082 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:49:04,082 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-26 20:49:04,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cfeb4118/33e5c1b1e3c940378e29c12bb089e6f4/FLAG7b0a75c20 [2023-08-26 20:49:04,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cfeb4118/33e5c1b1e3c940378e29c12bb089e6f4 [2023-08-26 20:49:04,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:49:04,129 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:49:04,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:49:04,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:49:04,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:49:04,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9bb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04, skipping insertion in model container [2023-08-26 20:49:04,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,185 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:49:04,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:49:04,533 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:49:04,563 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-26 20:49:04,564 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-26 20:49:04,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:49:04,621 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:49:04,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04 WrapperNode [2023-08-26 20:49:04,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:49:04,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:49:04,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:49:04,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:49:04,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,657 INFO L138 Inliner]: procedures = 168, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-26 20:49:04,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:49:04,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:49:04,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:49:04,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:49:04,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:49:04,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:49:04,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:49:04,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:49:04,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (1/1) ... [2023-08-26 20:49:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:49:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:49:04,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 20:49:04,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 20:49:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:49:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 20:49:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 20:49:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 20:49:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 20:49:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:49:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 20:49:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:49:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:49:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:49:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:49:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:49:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:49:04,773 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 20:49:04,879 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:49:04,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:49:05,068 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:49:05,080 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:49:05,081 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 20:49:05,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:49:05 BoogieIcfgContainer [2023-08-26 20:49:05,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:49:05,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:49:05,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:49:05,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:49:05,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:49:04" (1/3) ... [2023-08-26 20:49:05,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4f6b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:49:05, skipping insertion in model container [2023-08-26 20:49:05,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:04" (2/3) ... [2023-08-26 20:49:05,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4f6b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:49:05, skipping insertion in model container [2023-08-26 20:49:05,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:49:05" (3/3) ... [2023-08-26 20:49:05,090 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-08-26 20:49:05,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:49:05,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 20:49:05,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:49:05,225 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 20:49:05,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 109 transitions, 234 flow [2023-08-26 20:49:05,351 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-08-26 20:49:05,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:49:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 2/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-26 20:49:05,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 109 transitions, 234 flow [2023-08-26 20:49:05,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 95 transitions, 202 flow [2023-08-26 20:49:05,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:49:05,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-26 20:49:05,380 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-26 20:49:05,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 202 flow [2023-08-26 20:49:05,430 INFO L124 PetriNetUnfolderBase]: 0/95 cut-off events. [2023-08-26 20:49:05,430 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:49:05,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 0/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-26 20:49:05,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2023-08-26 20:49:08,609 INFO L134 LiptonReduction]: Checked pairs total: 6588 [2023-08-26 20:49:08,610 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-26 20:49:08,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:49:08,626 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;@1e2395bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:49:08,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 20:49:08,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:49:08,629 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 20:49:08,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:49:08,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:08,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 20:49:08,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:08,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash 11232720, now seen corresponding path program 1 times [2023-08-26 20:49:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987939367] [2023-08-26 20:49:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987939367] [2023-08-26 20:49:08,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987939367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:08,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:08,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:49:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683081157] [2023-08-26 20:49:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:08,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:09,141 INFO L124 PetriNetUnfolderBase]: 315/634 cut-off events. [2023-08-26 20:49:09,142 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-26 20:49:09,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 634 events. 315/634 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3060 event pairs, 103 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1164. Up to 393 conditions per place. [2023-08-26 20:49:09,153 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 44 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-26 20:49:09,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-08-26 20:49:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-26 20:49:09,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-26 20:49:09,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:09,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,191 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 322 transitions. [2023-08-26 20:49:09,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-08-26 20:49:09,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 20:49:09,196 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 90 flow [2023-08-26 20:49:09,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-26 20:49:09,201 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-26 20:49:09,201 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 90 flow [2023-08-26 20:49:09,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:09,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 20:49:09,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:49:09,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:09,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash 11232768, now seen corresponding path program 1 times [2023-08-26 20:49:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885062454] [2023-08-26 20:49:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:09,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885062454] [2023-08-26 20:49:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885062454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:49:09,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542313429] [2023-08-26 20:49:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:09,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:09,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:09,438 INFO L124 PetriNetUnfolderBase]: 283/650 cut-off events. [2023-08-26 20:49:09,439 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 20:49:09,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 650 events. 283/650 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3281 event pairs, 103 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 414. Up to 419 conditions per place. [2023-08-26 20:49:09,443 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-26 20:49:09,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 224 flow [2023-08-26 20:49:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-26 20:49:09,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-26 20:49:09,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:09,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-26 20:49:09,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,448 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 90 flow. Second operand 3 states and 322 transitions. [2023-08-26 20:49:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 224 flow [2023-08-26 20:49:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 20:49:09,450 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 100 flow [2023-08-26 20:49:09,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-26 20:49:09,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-26 20:49:09,451 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 100 flow [2023-08-26 20:49:09,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:09,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:49:09,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:09,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659288, now seen corresponding path program 1 times [2023-08-26 20:49:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:09,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381319846] [2023-08-26 20:49:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381319846] [2023-08-26 20:49:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381319846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:49:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883199000] [2023-08-26 20:49:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:09,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:09,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:09,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:09,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:09,626 INFO L124 PetriNetUnfolderBase]: 319/616 cut-off events. [2023-08-26 20:49:09,626 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-26 20:49:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 616 events. 319/616 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2556 event pairs, 189 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 417. Up to 350 conditions per place. [2023-08-26 20:49:09,629 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 50 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-26 20:49:09,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 270 flow [2023-08-26 20:49:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-26 20:49:09,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302681992337165 [2023-08-26 20:49:09,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-26 20:49:09,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-26 20:49:09,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:09,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-26 20:49:09,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,634 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 100 flow. Second operand 3 states and 329 transitions. [2023-08-26 20:49:09,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 270 flow [2023-08-26 20:49:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:49:09,637 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 136 flow [2023-08-26 20:49:09,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-26 20:49:09,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-26 20:49:09,638 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 136 flow [2023-08-26 20:49:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:09,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:49:09,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:09,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659336, now seen corresponding path program 1 times [2023-08-26 20:49:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547157875] [2023-08-26 20:49:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547157875] [2023-08-26 20:49:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547157875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:49:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203148385] [2023-08-26 20:49:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:09,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:09,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:09,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:09,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:09,773 INFO L124 PetriNetUnfolderBase]: 265/514 cut-off events. [2023-08-26 20:49:09,773 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-26 20:49:09,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 514 events. 265/514 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2004 event pairs, 185 based on Foata normal form. 36/544 useless extension candidates. Maximal degree in co-relation 596. Up to 346 conditions per place. [2023-08-26 20:49:09,776 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 41 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-26 20:49:09,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 244 flow [2023-08-26 20:49:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-26 20:49:09,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2023-08-26 20:49:09,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-26 20:49:09,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-26 20:49:09,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:09,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-26 20:49:09,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 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) [2023-08-26 20:49:09,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,780 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 136 flow. Second operand 3 states and 318 transitions. [2023-08-26 20:49:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 244 flow [2023-08-26 20:49:09,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:49:09,783 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 122 flow [2023-08-26 20:49:09,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-26 20:49:09,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-26 20:49:09,784 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 122 flow [2023-08-26 20:49:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:09,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:49:09,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:09,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -581276466, now seen corresponding path program 1 times [2023-08-26 20:49:09,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:09,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727278306] [2023-08-26 20:49:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:09,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:09,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:09,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727278306] [2023-08-26 20:49:09,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727278306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:09,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:49:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211099490] [2023-08-26 20:49:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:09,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:09,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:09,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:09,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:09,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:09,915 INFO L124 PetriNetUnfolderBase]: 76/247 cut-off events. [2023-08-26 20:49:09,915 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 20:49:09,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 247 events. 76/247 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 996 event pairs, 18 based on Foata normal form. 40/287 useless extension candidates. Maximal degree in co-relation 308. Up to 136 conditions per place. [2023-08-26 20:49:09,917 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 24 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-26 20:49:09,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 198 flow [2023-08-26 20:49:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-26 20:49:09,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593869731800766 [2023-08-26 20:49:09,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-26 20:49:09,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-26 20:49:09,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:09,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-26 20:49:09,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,923 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 122 flow. Second operand 3 states and 292 transitions. [2023-08-26 20:49:09,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 198 flow [2023-08-26 20:49:09,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:49:09,925 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2023-08-26 20:49:09,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-26 20:49:09,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-26 20:49:09,928 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2023-08-26 20:49:09,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:09,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:09,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:09,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 20:49:09,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:09,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash -652308531, now seen corresponding path program 1 times [2023-08-26 20:49:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747655464] [2023-08-26 20:49:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747655464] [2023-08-26 20:49:10,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747655464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:49:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785696187] [2023-08-26 20:49:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:49:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:49:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:49:10,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,096 INFO L124 PetriNetUnfolderBase]: 82/237 cut-off events. [2023-08-26 20:49:10,096 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 20:49:10,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 237 events. 82/237 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 862 event pairs, 64 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 297. Up to 177 conditions per place. [2023-08-26 20:49:10,098 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 28 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-26 20:49:10,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 199 flow [2023-08-26 20:49:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:49:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:49:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-26 20:49:10,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2023-08-26 20:49:10,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-26 20:49:10,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-26 20:49:10,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-26 20:49:10,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,105 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 4 states and 374 transitions. [2023-08-26 20:49:10,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 199 flow [2023-08-26 20:49:10,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:49:10,109 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 128 flow [2023-08-26 20:49:10,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-26 20:49:10,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-26 20:49:10,112 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 128 flow [2023-08-26 20:49:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:49:10,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash -253855623, now seen corresponding path program 1 times [2023-08-26 20:49:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758196836] [2023-08-26 20:49:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758196836] [2023-08-26 20:49:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758196836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:49:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517896960] [2023-08-26 20:49:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:49:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:49:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:49:10,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:10,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:10,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,288 INFO L124 PetriNetUnfolderBase]: 77/236 cut-off events. [2023-08-26 20:49:10,288 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 20:49:10,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 236 events. 77/236 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 868 event pairs, 12 based on Foata normal form. 6/242 useless extension candidates. Maximal degree in co-relation 254. Up to 95 conditions per place. [2023-08-26 20:49:10,290 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 44 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-26 20:49:10,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 285 flow [2023-08-26 20:49:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:49:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:49:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2023-08-26 20:49:10,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421455938697318 [2023-08-26 20:49:10,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2023-08-26 20:49:10,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2023-08-26 20:49:10,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2023-08-26 20:49:10,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,296 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 128 flow. Second operand 6 states and 566 transitions. [2023-08-26 20:49:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 285 flow [2023-08-26 20:49:10,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 20:49:10,298 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 140 flow [2023-08-26 20:49:10,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-26 20:49:10,299 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-26 20:49:10,299 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 140 flow [2023-08-26 20:49:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 20:49:10,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2014908308, now seen corresponding path program 1 times [2023-08-26 20:49:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190912469] [2023-08-26 20:49:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190912469] [2023-08-26 20:49:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190912469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:49:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121931366] [2023-08-26 20:49:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:49:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:49:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:49:10,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:10,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:10,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,411 INFO L124 PetriNetUnfolderBase]: 75/218 cut-off events. [2023-08-26 20:49:10,411 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-26 20:49:10,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 218 events. 75/218 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 759 event pairs, 23 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 296. Up to 142 conditions per place. [2023-08-26 20:49:10,413 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-26 20:49:10,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 239 flow [2023-08-26 20:49:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:49:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:49:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-26 20:49:10,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2023-08-26 20:49:10,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-26 20:49:10,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-26 20:49:10,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-26 20:49:10,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 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) [2023-08-26 20:49:10,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,418 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 140 flow. Second operand 4 states and 402 transitions. [2023-08-26 20:49:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 239 flow [2023-08-26 20:49:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 231 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 20:49:10,420 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 136 flow [2023-08-26 20:49:10,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-26 20:49:10,421 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-26 20:49:10,421 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 136 flow [2023-08-26 20:49:10,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 20:49:10,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash -336602244, now seen corresponding path program 1 times [2023-08-26 20:49:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505697330] [2023-08-26 20:49:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505697330] [2023-08-26 20:49:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505697330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:49:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847478944] [2023-08-26 20:49:10,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:49:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:49:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:49:10,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:10,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:10,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,623 INFO L124 PetriNetUnfolderBase]: 85/234 cut-off events. [2023-08-26 20:49:10,623 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 20:49:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 234 events. 85/234 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 780 event pairs, 41 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 324. Up to 84 conditions per place. [2023-08-26 20:49:10,624 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 49 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-26 20:49:10,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 307 flow [2023-08-26 20:49:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:49:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:49:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-26 20:49:10,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450191570881227 [2023-08-26 20:49:10,627 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-26 20:49:10,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-26 20:49:10,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-26 20:49:10,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,630 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 136 flow. Second operand 6 states and 569 transitions. [2023-08-26 20:49:10,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 307 flow [2023-08-26 20:49:10,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 290 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 20:49:10,633 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 143 flow [2023-08-26 20:49:10,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-26 20:49:10,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-26 20:49:10,633 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 143 flow [2023-08-26 20:49:10,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:49:10,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1737667436, now seen corresponding path program 1 times [2023-08-26 20:49:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919173346] [2023-08-26 20:49:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919173346] [2023-08-26 20:49:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919173346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:49:10,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711443759] [2023-08-26 20:49:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:49:10,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:49:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:49:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,724 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-26 20:49:10,724 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-26 20:49:10,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 224 events. 81/224 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 736 event pairs, 75 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 359. Up to 206 conditions per place. [2023-08-26 20:49:10,726 INFO L140 encePairwiseOnDemand]: 172/174 looper letters, 31 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-26 20:49:10,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 203 flow [2023-08-26 20:49:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:49:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:49:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-26 20:49:10,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2023-08-26 20:49:10,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-26 20:49:10,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-26 20:49:10,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-26 20:49:10,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,730 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 143 flow. Second operand 3 states and 299 transitions. [2023-08-26 20:49:10,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 203 flow [2023-08-26 20:49:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 195 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 20:49:10,731 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 133 flow [2023-08-26 20:49:10,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-26 20:49:10,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-26 20:49:10,732 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 133 flow [2023-08-26 20:49:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:49:10,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1284518803, now seen corresponding path program 1 times [2023-08-26 20:49:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635952845] [2023-08-26 20:49:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635952845] [2023-08-26 20:49:10,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635952845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:49:10,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287186619] [2023-08-26 20:49:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:49:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:49:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:49:10,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-26 20:49:10,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-26 20:49:10,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:10,855 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-26 20:49:10,856 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-26 20:49:10,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 224 events. 81/224 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 739 event pairs, 47 based on Foata normal form. 2/226 useless extension candidates. Maximal degree in co-relation 548. Up to 94 conditions per place. [2023-08-26 20:49:10,857 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 42 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-26 20:49:10,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 263 flow [2023-08-26 20:49:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:49:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:49:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-26 20:49:10,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847701149425287 [2023-08-26 20:49:10,859 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-26 20:49:10,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-26 20:49:10,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:10,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-26 20:49:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,862 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 133 flow. Second operand 4 states and 407 transitions. [2023-08-26 20:49:10,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 263 flow [2023-08-26 20:49:10,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:49:10,863 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 136 flow [2023-08-26 20:49:10,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-26 20:49:10,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-26 20:49:10,864 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 136 flow [2023-08-26 20:49:10,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:10,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:10,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 20:49:10,865 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:10,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash 514616197, now seen corresponding path program 1 times [2023-08-26 20:49:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:10,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358646774] [2023-08-26 20:49:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358646774] [2023-08-26 20:49:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358646774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:49:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469399311] [2023-08-26 20:49:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:49:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:49:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-26 20:49:10,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:10,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:10,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:10,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:11,138 INFO L124 PetriNetUnfolderBase]: 90/278 cut-off events. [2023-08-26 20:49:11,138 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 20:49:11,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 278 events. 90/278 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1115 event pairs, 16 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 684. Up to 80 conditions per place. [2023-08-26 20:49:11,140 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 25 selfloop transitions, 2 changer transitions 36/68 dead transitions. [2023-08-26 20:49:11,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 375 flow [2023-08-26 20:49:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:49:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:49:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 660 transitions. [2023-08-26 20:49:11,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2023-08-26 20:49:11,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 660 transitions. [2023-08-26 20:49:11,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 660 transitions. [2023-08-26 20:49:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:11,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 660 transitions. [2023-08-26 20:49:11,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,146 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 136 flow. Second operand 7 states and 660 transitions. [2023-08-26 20:49:11,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 375 flow [2023-08-26 20:49:11,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 355 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 20:49:11,148 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 112 flow [2023-08-26 20:49:11,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2023-08-26 20:49:11,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-26 20:49:11,149 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 112 flow [2023-08-26 20:49:11,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:11,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:11,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:49:11,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 20:49:11,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:11,150 INFO L85 PathProgramCache]: Analyzing trace with hash -985041799, now seen corresponding path program 2 times [2023-08-26 20:49:11,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:11,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949854758] [2023-08-26 20:49:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:11,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949854758] [2023-08-26 20:49:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949854758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:49:11,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:49:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:49:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083084629] [2023-08-26 20:49:11,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:49:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:49:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:49:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-26 20:49:11,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-26 20:49:11,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:11,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-26 20:49:11,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:11,369 INFO L124 PetriNetUnfolderBase]: 35/119 cut-off events. [2023-08-26 20:49:11,369 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 20:49:11,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 119 events. 35/119 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 292 event pairs, 8 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 279. Up to 51 conditions per place. [2023-08-26 20:49:11,369 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-26 20:49:11,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 189 flow [2023-08-26 20:49:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:49:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:49:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2023-08-26 20:49:11,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188834154351396 [2023-08-26 20:49:11,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2023-08-26 20:49:11,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2023-08-26 20:49:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2023-08-26 20:49:11,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,376 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 112 flow. Second operand 7 states and 632 transitions. [2023-08-26 20:49:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 189 flow [2023-08-26 20:49:11,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 179 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-26 20:49:11,377 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-26 20:49:11,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-26 20:49:11,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-26 20:49:11,377 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-26 20:49:11,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:49:11,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-26 20:49:11,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-26 20:49:11,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-26 20:49:11,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-26 20:49:11,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-26 20:49:11,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-26 20:49:11,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-26 20:49:11,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-26 20:49:11,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-26 20:49:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 20:49:11,382 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:11,386 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 20:49:11,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 20:49:11,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:49:11 BasicIcfg [2023-08-26 20:49:11,389 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 20:49:11,390 INFO L158 Benchmark]: Toolchain (without parser) took 7261.22ms. Allocated memory was 360.7MB in the beginning and 450.9MB in the end (delta: 90.2MB). Free memory was 335.8MB in the beginning and 247.6MB in the end (delta: 88.2MB). Peak memory consumption was 180.0MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,390 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 337.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 20:49:11,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.37ms. Allocated memory is still 360.7MB. Free memory was 335.8MB in the beginning and 316.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.16ms. Allocated memory is still 360.7MB. Free memory was 316.4MB in the beginning and 314.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,391 INFO L158 Benchmark]: Boogie Preprocessor took 26.74ms. Allocated memory is still 360.7MB. Free memory was 314.3MB in the beginning and 312.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,391 INFO L158 Benchmark]: RCFGBuilder took 397.43ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 297.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,391 INFO L158 Benchmark]: TraceAbstraction took 6304.89ms. Allocated memory was 360.7MB in the beginning and 450.9MB in the end (delta: 90.2MB). Free memory was 297.0MB in the beginning and 247.6MB in the end (delta: 49.5MB). Peak memory consumption was 142.2MB. Max. memory is 16.0GB. [2023-08-26 20:49:11,392 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 360.7MB. Free memory is still 337.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 490.37ms. Allocated memory is still 360.7MB. Free memory was 335.8MB in the beginning and 316.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.16ms. Allocated memory is still 360.7MB. Free memory was 316.4MB in the beginning and 314.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.74ms. Allocated memory is still 360.7MB. Free memory was 314.3MB in the beginning and 312.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 397.43ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 297.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6304.89ms. Allocated memory was 360.7MB in the beginning and 450.9MB in the end (delta: 90.2MB). Free memory was 297.0MB in the beginning and 247.6MB in the end (delta: 49.5MB). Peak memory consumption was 142.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 102 PlacesBefore, 42 PlacesAfterwards, 95 TransitionsBefore, 35 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 6588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3448, independent: 3133, independent conditional: 0, independent unconditional: 3133, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 851, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3448, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 851, unknown conditional: 0, unknown unconditional: 851] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 5 procedures, 154 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 4 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=9, InterpolantAutomatonStates: 56, 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, 0.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 20:49:11,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...