./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:47:26,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:47:26,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:47:26,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:47:26,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:47:26,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:47:26,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:47:26,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:47:26,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:47:26,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:47:26,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:47:26,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:47:26,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:47:26,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:47:26,906 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:47:26,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:47:26,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:47:26,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:47:26,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:47:26,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:47:26,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:47:26,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:47:26,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:47:26,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:47:26,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:47:26,912 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:47:26,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:47:26,913 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:47:26,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:47:26,913 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:47:26,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:47:26,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:47:26,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:47:26,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:47:26,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:26,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:47:26,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:47:26,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:47:26,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:47:26,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:47:26,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:47:26,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:47:26,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:47:26,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:47:26,919 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-13 16:47:27,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:47:27,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:47:27,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:47:27,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:47:27,165 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:47:27,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 16:47:28,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:47:28,727 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:47:28,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 16:47:28,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86884c4a1/747b277365b741469e1c8c10ef153fbc/FLAG7f73517a6 [2024-10-13 16:47:29,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86884c4a1/747b277365b741469e1c8c10ef153fbc [2024-10-13 16:47:29,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:47:29,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:47:29,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:29,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:47:29,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:47:29,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49347ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29, skipping insertion in model container [2024-10-13 16:47:29,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,170 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:47:29,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:29,456 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:47:29,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:29,490 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:47:29,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29 WrapperNode [2024-10-13 16:47:29,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:29,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:29,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:47:29,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:47:29,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,523 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2024-10-13 16:47:29,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:29,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:47:29,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:47:29,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:47:29,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,565 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 16:47:29,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:47:29,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:47:29,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:47:29,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:47:29,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (1/1) ... [2024-10-13 16:47:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:29,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:29,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:47:29,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:47:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:47:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:47:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:47:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:47:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:47:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:47:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:47:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:47:29,663 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:47:29,749 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:47:29,751 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:47:30,099 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:47:30,100 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:47:30,299 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:47:30,299 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:47:30,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:30 BoogieIcfgContainer [2024-10-13 16:47:30,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:47:30,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:47:30,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:47:30,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:47:30,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:47:29" (1/3) ... [2024-10-13 16:47:30,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c807b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:30, skipping insertion in model container [2024-10-13 16:47:30,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:29" (2/3) ... [2024-10-13 16:47:30,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c807b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:30, skipping insertion in model container [2024-10-13 16:47:30,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:30" (3/3) ... [2024-10-13 16:47:30,308 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-13 16:47:30,323 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:47:30,323 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-10-13 16:47:30,323 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:47:30,382 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:47:30,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2024-10-13 16:47:30,443 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2024-10-13 16:47:30,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:47:30,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 10/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2024-10-13 16:47:30,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2024-10-13 16:47:30,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2024-10-13 16:47:30,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:47:30,463 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2656f7ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:47:30,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-10-13 16:47:30,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:47:30,468 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-10-13 16:47:30,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:47:30,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:30,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:47:30,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:30,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -372165075, now seen corresponding path program 1 times [2024-10-13 16:47:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:30,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203830050] [2024-10-13 16:47:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:30,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:30,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203830050] [2024-10-13 16:47:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203830050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566602078] [2024-10-13 16:47:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:30,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:30,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:30,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:30,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:30,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:30,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:31,261 INFO L124 PetriNetUnfolderBase]: 1063/2550 cut-off events. [2024-10-13 16:47:31,261 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-13 16:47:31,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2550 events. 1063/2550 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19109 event pairs, 412 based on Foata normal form. 60/2083 useless extension candidates. Maximal degree in co-relation 4124. Up to 929 conditions per place. [2024-10-13 16:47:31,279 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 72 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-10-13 16:47:31,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 427 flow [2024-10-13 16:47:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-13 16:47:31,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-13 16:47:31,296 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 296 transitions. [2024-10-13 16:47:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 427 flow [2024-10-13 16:47:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:31,305 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 222 flow [2024-10-13 16:47:31,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-10-13 16:47:31,311 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-10-13 16:47:31,311 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 222 flow [2024-10-13 16:47:31,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:31,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:31,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:31,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:47:31,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:31,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1347785331, now seen corresponding path program 1 times [2024-10-13 16:47:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639662678] [2024-10-13 16:47:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:31,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639662678] [2024-10-13 16:47:31,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639662678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:31,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:31,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:31,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596242384] [2024-10-13 16:47:31,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:31,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:31,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:31,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-13 16:47:31,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:31,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:31,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-13 16:47:31,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:31,666 INFO L124 PetriNetUnfolderBase]: 873/2206 cut-off events. [2024-10-13 16:47:31,666 INFO L125 PetriNetUnfolderBase]: For 372/380 co-relation queries the response was YES. [2024-10-13 16:47:31,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2206 events. 873/2206 cut-off events. For 372/380 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16263 event pairs, 302 based on Foata normal form. 8/1863 useless extension candidates. Maximal degree in co-relation 2162. Up to 662 conditions per place. [2024-10-13 16:47:31,678 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-10-13 16:47:31,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 364 flow [2024-10-13 16:47:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-13 16:47:31,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-13 16:47:31,683 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 222 flow. Second operand 4 states and 281 transitions. [2024-10-13 16:47:31,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 364 flow [2024-10-13 16:47:31,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:31,689 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 228 flow [2024-10-13 16:47:31,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-10-13 16:47:31,691 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-10-13 16:47:31,691 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 228 flow [2024-10-13 16:47:31,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:31,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:31,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:31,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:47:31,692 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:31,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1168358703, now seen corresponding path program 1 times [2024-10-13 16:47:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:31,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330772709] [2024-10-13 16:47:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:31,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:31,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330772709] [2024-10-13 16:47:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330772709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:31,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642877920] [2024-10-13 16:47:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:31,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:31,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:31,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-13 16:47:31,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:31,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:31,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-13 16:47:31,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:31,980 INFO L124 PetriNetUnfolderBase]: 881/2192 cut-off events. [2024-10-13 16:47:31,981 INFO L125 PetriNetUnfolderBase]: For 685/693 co-relation queries the response was YES. [2024-10-13 16:47:31,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 2192 events. 881/2192 cut-off events. For 685/693 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15893 event pairs, 302 based on Foata normal form. 38/1879 useless extension candidates. Maximal degree in co-relation 2250. Up to 662 conditions per place. [2024-10-13 16:47:31,991 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 51 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-13 16:47:31,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 370 flow [2024-10-13 16:47:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-13 16:47:31,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-13 16:47:31,993 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 228 flow. Second operand 4 states and 277 transitions. [2024-10-13 16:47:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 370 flow [2024-10-13 16:47:31,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:31,997 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 224 flow [2024-10-13 16:47:31,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-10-13 16:47:31,998 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-10-13 16:47:31,998 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 224 flow [2024-10-13 16:47:31,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:31,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:31,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:31,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:47:31,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:31,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1889321792, now seen corresponding path program 1 times [2024-10-13 16:47:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146141303] [2024-10-13 16:47:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146141303] [2024-10-13 16:47:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146141303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769162107] [2024-10-13 16:47:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:32,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:32,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:32,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:32,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:32,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:32,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:32,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:32,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:32,301 INFO L124 PetriNetUnfolderBase]: 1246/2933 cut-off events. [2024-10-13 16:47:32,320 INFO L125 PetriNetUnfolderBase]: For 809/844 co-relation queries the response was YES. [2024-10-13 16:47:32,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 2933 events. 1246/2933 cut-off events. For 809/844 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22744 event pairs, 474 based on Foata normal form. 101/2503 useless extension candidates. Maximal degree in co-relation 2716. Up to 1128 conditions per place. [2024-10-13 16:47:32,332 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 76 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-13 16:47:32,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 514 flow [2024-10-13 16:47:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-13 16:47:32,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-13 16:47:32,334 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 224 flow. Second operand 4 states and 294 transitions. [2024-10-13 16:47:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 514 flow [2024-10-13 16:47:32,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:32,337 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 250 flow [2024-10-13 16:47:32,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-10-13 16:47:32,338 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2024-10-13 16:47:32,338 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 250 flow [2024-10-13 16:47:32,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:32,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:32,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:32,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:47:32,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:32,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1859381675, now seen corresponding path program 1 times [2024-10-13 16:47:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944534018] [2024-10-13 16:47:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:32,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944534018] [2024-10-13 16:47:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944534018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:32,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955549837] [2024-10-13 16:47:32,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:32,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:32,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-13 16:47:32,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:32,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:32,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-13 16:47:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:32,713 INFO L124 PetriNetUnfolderBase]: 1330/2890 cut-off events. [2024-10-13 16:47:32,714 INFO L125 PetriNetUnfolderBase]: For 769/810 co-relation queries the response was YES. [2024-10-13 16:47:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2890 events. 1330/2890 cut-off events. For 769/810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 20817 event pairs, 386 based on Foata normal form. 23/2635 useless extension candidates. Maximal degree in co-relation 3442. Up to 877 conditions per place. [2024-10-13 16:47:32,727 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2024-10-13 16:47:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 524 flow [2024-10-13 16:47:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2024-10-13 16:47:32,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2024-10-13 16:47:32,729 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 250 flow. Second operand 5 states and 349 transitions. [2024-10-13 16:47:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 524 flow [2024-10-13 16:47:32,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:32,736 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 260 flow [2024-10-13 16:47:32,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2024-10-13 16:47:32,738 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-13 16:47:32,738 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 260 flow [2024-10-13 16:47:32,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:32,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:32,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:32,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:47:32,739 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:32,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1859380650, now seen corresponding path program 1 times [2024-10-13 16:47:32,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:32,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152267745] [2024-10-13 16:47:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:32,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152267745] [2024-10-13 16:47:32,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152267745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:32,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:32,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:32,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777299086] [2024-10-13 16:47:32,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:32,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:32,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:32,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:32,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:32,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:32,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:33,050 INFO L124 PetriNetUnfolderBase]: 1112/2762 cut-off events. [2024-10-13 16:47:33,051 INFO L125 PetriNetUnfolderBase]: For 1214/1237 co-relation queries the response was YES. [2024-10-13 16:47:33,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 2762 events. 1112/2762 cut-off events. For 1214/1237 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21445 event pairs, 515 based on Foata normal form. 49/2477 useless extension candidates. Maximal degree in co-relation 2020. Up to 1170 conditions per place. [2024-10-13 16:47:33,069 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 76 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-13 16:47:33,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 532 flow [2024-10-13 16:47:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-13 16:47:33,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-10-13 16:47:33,071 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 260 flow. Second operand 4 states and 291 transitions. [2024-10-13 16:47:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 532 flow [2024-10-13 16:47:33,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 520 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:33,106 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 250 flow [2024-10-13 16:47:33,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-13 16:47:33,108 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-13 16:47:33,108 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 250 flow [2024-10-13 16:47:33,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:33,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:33,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:47:33,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:33,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1560567403, now seen corresponding path program 1 times [2024-10-13 16:47:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317492367] [2024-10-13 16:47:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:33,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317492367] [2024-10-13 16:47:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317492367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:33,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548506109] [2024-10-13 16:47:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:33,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:33,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:33,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-13 16:47:33,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:33,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-13 16:47:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:33,336 INFO L124 PetriNetUnfolderBase]: 1010/2629 cut-off events. [2024-10-13 16:47:33,337 INFO L125 PetriNetUnfolderBase]: For 956/983 co-relation queries the response was YES. [2024-10-13 16:47:33,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 2629 events. 1010/2629 cut-off events. For 956/983 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20917 event pairs, 329 based on Foata normal form. 27/2289 useless extension candidates. Maximal degree in co-relation 2586. Up to 813 conditions per place. [2024-10-13 16:47:33,350 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-13 16:47:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 422 flow [2024-10-13 16:47:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-10-13 16:47:33,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-13 16:47:33,352 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 250 flow. Second operand 4 states and 280 transitions. [2024-10-13 16:47:33,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 422 flow [2024-10-13 16:47:33,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:33,356 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 250 flow [2024-10-13 16:47:33,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-10-13 16:47:33,357 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-13 16:47:33,358 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 250 flow [2024-10-13 16:47:33,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:33,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:33,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:47:33,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:33,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1806256300, now seen corresponding path program 1 times [2024-10-13 16:47:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393467121] [2024-10-13 16:47:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393467121] [2024-10-13 16:47:33,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393467121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:33,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:33,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:47:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997188056] [2024-10-13 16:47:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:33,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:33,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-13 16:47:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-13 16:47:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:33,824 INFO L124 PetriNetUnfolderBase]: 1293/2819 cut-off events. [2024-10-13 16:47:33,824 INFO L125 PetriNetUnfolderBase]: For 1297/1348 co-relation queries the response was YES. [2024-10-13 16:47:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2819 events. 1293/2819 cut-off events. For 1297/1348 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20236 event pairs, 338 based on Foata normal form. 97/2634 useless extension candidates. Maximal degree in co-relation 3384. Up to 816 conditions per place. [2024-10-13 16:47:33,837 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 90 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2024-10-13 16:47:33,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 640 flow [2024-10-13 16:47:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-10-13 16:47:33,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-13 16:47:33,839 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 250 flow. Second operand 6 states and 402 transitions. [2024-10-13 16:47:33,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 640 flow [2024-10-13 16:47:33,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:33,844 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 267 flow [2024-10-13 16:47:33,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-13 16:47:33,846 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-13 16:47:33,846 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 267 flow [2024-10-13 16:47:33,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:33,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:33,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:47:33,848 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:33,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1132918276, now seen corresponding path program 1 times [2024-10-13 16:47:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267691000] [2024-10-13 16:47:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267691000] [2024-10-13 16:47:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267691000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:33,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28514821] [2024-10-13 16:47:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:33,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:33,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-13 16:47:33,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:33,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:33,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-13 16:47:33,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:34,086 INFO L124 PetriNetUnfolderBase]: 1012/2582 cut-off events. [2024-10-13 16:47:34,086 INFO L125 PetriNetUnfolderBase]: For 1882/1966 co-relation queries the response was YES. [2024-10-13 16:47:34,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2582 events. 1012/2582 cut-off events. For 1882/1966 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20144 event pairs, 331 based on Foata normal form. 103/2336 useless extension candidates. Maximal degree in co-relation 2662. Up to 817 conditions per place. [2024-10-13 16:47:34,095 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 56 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-13 16:47:34,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 457 flow [2024-10-13 16:47:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-10-13 16:47:34,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 16:47:34,097 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 267 flow. Second operand 4 states and 276 transitions. [2024-10-13 16:47:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 457 flow [2024-10-13 16:47:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:34,100 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 258 flow [2024-10-13 16:47:34,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-13 16:47:34,102 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-13 16:47:34,103 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 258 flow [2024-10-13 16:47:34,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:34,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:34,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:47:34,104 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:34,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 787947419, now seen corresponding path program 1 times [2024-10-13 16:47:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:34,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308758960] [2024-10-13 16:47:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308758960] [2024-10-13 16:47:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308758960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835958771] [2024-10-13 16:47:34,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:34,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:34,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-13 16:47:34,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:34,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-13 16:47:34,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:34,443 INFO L124 PetriNetUnfolderBase]: 1252/2772 cut-off events. [2024-10-13 16:47:34,444 INFO L125 PetriNetUnfolderBase]: For 1338/1363 co-relation queries the response was YES. [2024-10-13 16:47:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 2772 events. 1252/2772 cut-off events. For 1338/1363 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20084 event pairs, 485 based on Foata normal form. 59/2517 useless extension candidates. Maximal degree in co-relation 2883. Up to 1180 conditions per place. [2024-10-13 16:47:34,455 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 113 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-13 16:47:34,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 167 transitions, 758 flow [2024-10-13 16:47:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-10-13 16:47:34,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-10-13 16:47:34,456 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 258 flow. Second operand 6 states and 424 transitions. [2024-10-13 16:47:34,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 167 transitions, 758 flow [2024-10-13 16:47:34,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 721 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:34,463 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 274 flow [2024-10-13 16:47:34,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-13 16:47:34,464 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-13 16:47:34,464 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 274 flow [2024-10-13 16:47:34,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:34,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:34,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:47:34,465 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:34,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash 760729006, now seen corresponding path program 1 times [2024-10-13 16:47:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:34,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141282002] [2024-10-13 16:47:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:34,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141282002] [2024-10-13 16:47:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141282002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:34,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7618079] [2024-10-13 16:47:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:34,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:34,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:34,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:34,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:34,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:34,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:34,716 INFO L124 PetriNetUnfolderBase]: 1093/2619 cut-off events. [2024-10-13 16:47:34,716 INFO L125 PetriNetUnfolderBase]: For 2292/2372 co-relation queries the response was YES. [2024-10-13 16:47:34,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 2619 events. 1093/2619 cut-off events. For 2292/2372 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19881 event pairs, 519 based on Foata normal form. 113/2383 useless extension candidates. Maximal degree in co-relation 4102. Up to 1178 conditions per place. [2024-10-13 16:47:34,727 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 80 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-13 16:47:34,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 602 flow [2024-10-13 16:47:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-10-13 16:47:34,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-10-13 16:47:34,729 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 274 flow. Second operand 4 states and 289 transitions. [2024-10-13 16:47:34,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 602 flow [2024-10-13 16:47:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 559 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:34,733 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 257 flow [2024-10-13 16:47:34,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-13 16:47:34,733 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-13 16:47:34,734 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 257 flow [2024-10-13 16:47:34,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:34,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:34,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:47:34,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:34,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash 760727981, now seen corresponding path program 1 times [2024-10-13 16:47:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407373705] [2024-10-13 16:47:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407373705] [2024-10-13 16:47:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407373705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200738556] [2024-10-13 16:47:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:34,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:34,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-13 16:47:34,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:34,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:34,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-13 16:47:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:35,032 INFO L124 PetriNetUnfolderBase]: 1264/2720 cut-off events. [2024-10-13 16:47:35,032 INFO L125 PetriNetUnfolderBase]: For 1563/1663 co-relation queries the response was YES. [2024-10-13 16:47:35,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 2720 events. 1264/2720 cut-off events. For 1563/1663 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19457 event pairs, 331 based on Foata normal form. 100/2537 useless extension candidates. Maximal degree in co-relation 4343. Up to 843 conditions per place. [2024-10-13 16:47:35,042 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 78 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-10-13 16:47:35,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 563 flow [2024-10-13 16:47:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2024-10-13 16:47:35,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2024-10-13 16:47:35,044 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 257 flow. Second operand 5 states and 347 transitions. [2024-10-13 16:47:35,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 563 flow [2024-10-13 16:47:35,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:35,047 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 261 flow [2024-10-13 16:47:35,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-10-13 16:47:35,048 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-13 16:47:35,048 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 261 flow [2024-10-13 16:47:35,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:35,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:35,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:35,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:47:35,049 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:35,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -645491785, now seen corresponding path program 1 times [2024-10-13 16:47:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850974055] [2024-10-13 16:47:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850974055] [2024-10-13 16:47:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850974055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:35,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:35,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348713315] [2024-10-13 16:47:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:35,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:35,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:35,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:35,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:35,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:35,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:35,390 INFO L124 PetriNetUnfolderBase]: 1379/3226 cut-off events. [2024-10-13 16:47:35,390 INFO L125 PetriNetUnfolderBase]: For 1869/1950 co-relation queries the response was YES. [2024-10-13 16:47:35,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 3226 events. 1379/3226 cut-off events. For 1869/1950 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25038 event pairs, 586 based on Foata normal form. 149/2946 useless extension candidates. Maximal degree in co-relation 5344. Up to 1307 conditions per place. [2024-10-13 16:47:35,400 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-10-13 16:47:35,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 569 flow [2024-10-13 16:47:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-13 16:47:35,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-13 16:47:35,402 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 261 flow. Second operand 4 states and 296 transitions. [2024-10-13 16:47:35,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 569 flow [2024-10-13 16:47:35,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:35,405 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 290 flow [2024-10-13 16:47:35,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-13 16:47:35,406 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2024-10-13 16:47:35,406 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 290 flow [2024-10-13 16:47:35,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:35,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:35,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:35,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:47:35,406 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:35,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2107731751, now seen corresponding path program 1 times [2024-10-13 16:47:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:35,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30156252] [2024-10-13 16:47:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:35,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30156252] [2024-10-13 16:47:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30156252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:35,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:35,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:47:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128558247] [2024-10-13 16:47:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:35,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:35,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:35,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-13 16:47:35,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 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) [2024-10-13 16:47:35,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:35,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-13 16:47:35,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:35,760 INFO L124 PetriNetUnfolderBase]: 1414/3063 cut-off events. [2024-10-13 16:47:35,760 INFO L125 PetriNetUnfolderBase]: For 2674/2846 co-relation queries the response was YES. [2024-10-13 16:47:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6782 conditions, 3063 events. 1414/3063 cut-off events. For 2674/2846 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22423 event pairs, 383 based on Foata normal form. 211/2947 useless extension candidates. Maximal degree in co-relation 5324. Up to 931 conditions per place. [2024-10-13 16:47:35,773 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 103 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-10-13 16:47:35,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 802 flow [2024-10-13 16:47:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-10-13 16:47:35,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-13 16:47:35,775 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 290 flow. Second operand 6 states and 399 transitions. [2024-10-13 16:47:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 802 flow [2024-10-13 16:47:35,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:35,782 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 315 flow [2024-10-13 16:47:35,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-10-13 16:47:35,783 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 15 predicate places. [2024-10-13 16:47:35,783 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 315 flow [2024-10-13 16:47:35,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 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) [2024-10-13 16:47:35,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:35,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:35,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:47:35,783 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:35,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1464591931, now seen corresponding path program 1 times [2024-10-13 16:47:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105377421] [2024-10-13 16:47:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105377421] [2024-10-13 16:47:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105377421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634901110] [2024-10-13 16:47:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:35,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:35,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-13 16:47:35,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:35,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:35,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-13 16:47:35,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:36,321 INFO L124 PetriNetUnfolderBase]: 2099/4807 cut-off events. [2024-10-13 16:47:36,321 INFO L125 PetriNetUnfolderBase]: For 4844/5046 co-relation queries the response was YES. [2024-10-13 16:47:36,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 4807 events. 2099/4807 cut-off events. For 4844/5046 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 39643 event pairs, 512 based on Foata normal form. 232/4615 useless extension candidates. Maximal degree in co-relation 6345. Up to 1211 conditions per place. [2024-10-13 16:47:36,339 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 147 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2024-10-13 16:47:36,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 202 transitions, 1067 flow [2024-10-13 16:47:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2024-10-13 16:47:36,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-10-13 16:47:36,341 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 315 flow. Second operand 7 states and 486 transitions. [2024-10-13 16:47:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 202 transitions, 1067 flow [2024-10-13 16:47:36,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 202 transitions, 1009 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:36,354 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 384 flow [2024-10-13 16:47:36,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-10-13 16:47:36,354 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2024-10-13 16:47:36,354 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 384 flow [2024-10-13 16:47:36,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:36,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:36,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:36,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:47:36,355 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:36,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1862492755, now seen corresponding path program 1 times [2024-10-13 16:47:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442650399] [2024-10-13 16:47:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442650399] [2024-10-13 16:47:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442650399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:36,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:36,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789102017] [2024-10-13 16:47:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:36,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:36,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:36,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:36,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:36,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:36,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:36,749 INFO L124 PetriNetUnfolderBase]: 2179/4833 cut-off events. [2024-10-13 16:47:36,749 INFO L125 PetriNetUnfolderBase]: For 7374/7666 co-relation queries the response was YES. [2024-10-13 16:47:36,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11694 conditions, 4833 events. 2179/4833 cut-off events. For 7374/7666 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39355 event pairs, 942 based on Foata normal form. 249/4669 useless extension candidates. Maximal degree in co-relation 7609. Up to 2118 conditions per place. [2024-10-13 16:47:36,772 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 100 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-10-13 16:47:36,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 151 transitions, 911 flow [2024-10-13 16:47:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-10-13 16:47:36,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-10-13 16:47:36,773 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 384 flow. Second operand 4 states and 287 transitions. [2024-10-13 16:47:36,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 151 transitions, 911 flow [2024-10-13 16:47:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 891 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:36,789 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 387 flow [2024-10-13 16:47:36,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-10-13 16:47:36,789 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2024-10-13 16:47:36,789 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 387 flow [2024-10-13 16:47:36,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:36,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:36,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:36,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:47:36,790 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:36,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1842321381, now seen corresponding path program 1 times [2024-10-13 16:47:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671420784] [2024-10-13 16:47:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671420784] [2024-10-13 16:47:36,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671420784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:36,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:36,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:47:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587964668] [2024-10-13 16:47:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:36,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:36,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:36,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:36,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:36,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:36,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:37,659 INFO L124 PetriNetUnfolderBase]: 2586/6161 cut-off events. [2024-10-13 16:47:37,660 INFO L125 PetriNetUnfolderBase]: For 8697/8892 co-relation queries the response was YES. [2024-10-13 16:47:37,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14751 conditions, 6161 events. 2586/6161 cut-off events. For 8697/8892 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 54366 event pairs, 690 based on Foata normal form. 267/5861 useless extension candidates. Maximal degree in co-relation 9214. Up to 1628 conditions per place. [2024-10-13 16:47:37,683 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 115 selfloop transitions, 10 changer transitions 0/166 dead transitions. [2024-10-13 16:47:37,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 911 flow [2024-10-13 16:47:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-10-13 16:47:37,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76875 [2024-10-13 16:47:37,685 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 387 flow. Second operand 5 states and 369 transitions. [2024-10-13 16:47:37,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 911 flow [2024-10-13 16:47:37,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:47:37,705 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 427 flow [2024-10-13 16:47:37,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-10-13 16:47:37,706 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 24 predicate places. [2024-10-13 16:47:37,706 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 427 flow [2024-10-13 16:47:37,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:37,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:37,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:37,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:47:37,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:37,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1694324694, now seen corresponding path program 1 times [2024-10-13 16:47:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060344348] [2024-10-13 16:47:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060344348] [2024-10-13 16:47:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060344348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292417245] [2024-10-13 16:47:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:37,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:37,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:37,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:37,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:37,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:37,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:38,192 INFO L124 PetriNetUnfolderBase]: 3213/7418 cut-off events. [2024-10-13 16:47:38,193 INFO L125 PetriNetUnfolderBase]: For 12698/13028 co-relation queries the response was YES. [2024-10-13 16:47:38,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17990 conditions, 7418 events. 3213/7418 cut-off events. For 12698/13028 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 67405 event pairs, 1525 based on Foata normal form. 432/6977 useless extension candidates. Maximal degree in co-relation 9302. Up to 3150 conditions per place. [2024-10-13 16:47:38,225 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 111 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-13 16:47:38,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1071 flow [2024-10-13 16:47:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-13 16:47:38,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-13 16:47:38,226 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 427 flow. Second operand 4 states and 294 transitions. [2024-10-13 16:47:38,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1071 flow [2024-10-13 16:47:38,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 1036 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:38,253 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 456 flow [2024-10-13 16:47:38,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-10-13 16:47:38,254 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-10-13 16:47:38,254 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 456 flow [2024-10-13 16:47:38,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:38,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:38,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:38,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:47:38,254 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:38,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1277388195, now seen corresponding path program 1 times [2024-10-13 16:47:38,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303091988] [2024-10-13 16:47:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303091988] [2024-10-13 16:47:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303091988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:38,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609455132] [2024-10-13 16:47:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:38,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:47:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:47:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:47:38,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-13 16:47:38,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:38,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:38,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-13 16:47:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:39,112 INFO L124 PetriNetUnfolderBase]: 4198/7932 cut-off events. [2024-10-13 16:47:39,112 INFO L125 PetriNetUnfolderBase]: For 12507/13024 co-relation queries the response was YES. [2024-10-13 16:47:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 7932 events. 4198/7932 cut-off events. For 12507/13024 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 62045 event pairs, 200 based on Foata normal form. 417/8046 useless extension candidates. Maximal degree in co-relation 19868. Up to 3397 conditions per place. [2024-10-13 16:47:39,157 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 136 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-10-13 16:47:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1186 flow [2024-10-13 16:47:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2024-10-13 16:47:39,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:47:39,159 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 456 flow. Second operand 7 states and 462 transitions. [2024-10-13 16:47:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1186 flow [2024-10-13 16:47:39,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 1186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:39,200 INFO L231 Difference]: Finished difference. Result has 120 places, 99 transitions, 486 flow [2024-10-13 16:47:39,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2024-10-13 16:47:39,201 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 31 predicate places. [2024-10-13 16:47:39,201 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 486 flow [2024-10-13 16:47:39,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:39,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:39,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:39,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:47:39,202 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:39,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1942041184, now seen corresponding path program 1 times [2024-10-13 16:47:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:39,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453189168] [2024-10-13 16:47:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:39,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:39,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:39,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453189168] [2024-10-13 16:47:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453189168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:39,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:39,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766244193] [2024-10-13 16:47:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:39,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:39,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:39,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-13 16:47:39,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:39,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:39,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-13 16:47:39,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:39,763 INFO L124 PetriNetUnfolderBase]: 2584/6344 cut-off events. [2024-10-13 16:47:39,764 INFO L125 PetriNetUnfolderBase]: For 15151/15458 co-relation queries the response was YES. [2024-10-13 16:47:39,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 6344 events. 2584/6344 cut-off events. For 15151/15458 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 57497 event pairs, 643 based on Foata normal form. 305/6249 useless extension candidates. Maximal degree in co-relation 12348. Up to 2330 conditions per place. [2024-10-13 16:47:39,799 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 66 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-10-13 16:47:39,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 743 flow [2024-10-13 16:47:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-13 16:47:39,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-13 16:47:39,801 INFO L175 Difference]: Start difference. First operand has 120 places, 99 transitions, 486 flow. Second operand 4 states and 281 transitions. [2024-10-13 16:47:39,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 743 flow [2024-10-13 16:47:39,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 716 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:39,846 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 477 flow [2024-10-13 16:47:39,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-10-13 16:47:39,847 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2024-10-13 16:47:39,847 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 477 flow [2024-10-13 16:47:39,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:39,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:39,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:39,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 16:47:39,848 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -984457133, now seen corresponding path program 1 times [2024-10-13 16:47:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615190797] [2024-10-13 16:47:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:39,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615190797] [2024-10-13 16:47:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615190797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:39,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:39,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739817196] [2024-10-13 16:47:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:39,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:39,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-13 16:47:39,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:39,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:39,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-13 16:47:39,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:41,151 INFO L124 PetriNetUnfolderBase]: 4596/10389 cut-off events. [2024-10-13 16:47:41,152 INFO L125 PetriNetUnfolderBase]: For 23319/23782 co-relation queries the response was YES. [2024-10-13 16:47:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27215 conditions, 10389 events. 4596/10389 cut-off events. For 23319/23782 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 98430 event pairs, 1184 based on Foata normal form. 513/10075 useless extension candidates. Maximal degree in co-relation 16215. Up to 2698 conditions per place. [2024-10-13 16:47:41,198 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 201 selfloop transitions, 13 changer transitions 0/253 dead transitions. [2024-10-13 16:47:41,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 253 transitions, 2013 flow [2024-10-13 16:47:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2024-10-13 16:47:41,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2024-10-13 16:47:41,200 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 477 flow. Second operand 7 states and 481 transitions. [2024-10-13 16:47:41,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 253 transitions, 2013 flow [2024-10-13 16:47:41,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 253 transitions, 1891 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:41,272 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 528 flow [2024-10-13 16:47:41,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-10-13 16:47:41,273 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 33 predicate places. [2024-10-13 16:47:41,273 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 528 flow [2024-10-13 16:47:41,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:41,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:41,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:41,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 16:47:41,273 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:41,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash -944327586, now seen corresponding path program 1 times [2024-10-13 16:47:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:41,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922265089] [2024-10-13 16:47:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922265089] [2024-10-13 16:47:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922265089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:47:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116431871] [2024-10-13 16:47:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:41,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:47:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:47:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:47:41,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-13 16:47:41,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:41,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:41,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-13 16:47:41,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:42,584 INFO L124 PetriNetUnfolderBase]: 5379/10327 cut-off events. [2024-10-13 16:47:42,585 INFO L125 PetriNetUnfolderBase]: For 26270/27285 co-relation queries the response was YES. [2024-10-13 16:47:42,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30088 conditions, 10327 events. 5379/10327 cut-off events. For 26270/27285 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 85795 event pairs, 286 based on Foata normal form. 947/10838 useless extension candidates. Maximal degree in co-relation 27492. Up to 2416 conditions per place. [2024-10-13 16:47:42,634 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 205 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-10-13 16:47:42,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 265 transitions, 1962 flow [2024-10-13 16:47:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:47:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:47:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2024-10-13 16:47:42,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261574074074074 [2024-10-13 16:47:42,642 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 528 flow. Second operand 9 states and 541 transitions. [2024-10-13 16:47:42,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 265 transitions, 1962 flow [2024-10-13 16:47:42,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 265 transitions, 1904 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:42,799 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 572 flow [2024-10-13 16:47:42,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-10-13 16:47:42,799 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-13 16:47:42,799 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 572 flow [2024-10-13 16:47:42,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:42,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:42,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:42,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 16:47:42,800 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:42,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash -650189322, now seen corresponding path program 1 times [2024-10-13 16:47:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119972081] [2024-10-13 16:47:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119972081] [2024-10-13 16:47:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119972081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839943757] [2024-10-13 16:47:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:42,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:42,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-13 16:47:42,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:42,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:42,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-13 16:47:42,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:43,515 INFO L124 PetriNetUnfolderBase]: 3856/8972 cut-off events. [2024-10-13 16:47:43,516 INFO L125 PetriNetUnfolderBase]: For 28065/28702 co-relation queries the response was YES. [2024-10-13 16:47:43,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26481 conditions, 8972 events. 3856/8972 cut-off events. For 28065/28702 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 83986 event pairs, 925 based on Foata normal form. 475/9158 useless extension candidates. Maximal degree in co-relation 17768. Up to 3639 conditions per place. [2024-10-13 16:47:43,554 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 76 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-10-13 16:47:43,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 893 flow [2024-10-13 16:47:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-13 16:47:43,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-13 16:47:43,555 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 572 flow. Second operand 4 states and 277 transitions. [2024-10-13 16:47:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 893 flow [2024-10-13 16:47:43,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 129 transitions, 853 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 16:47:43,626 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 546 flow [2024-10-13 16:47:43,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-10-13 16:47:43,627 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2024-10-13 16:47:43,627 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 546 flow [2024-10-13 16:47:43,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:43,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:43,628 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:43,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 16:47:43,628 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:43,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash -453430994, now seen corresponding path program 1 times [2024-10-13 16:47:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:43,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025205779] [2024-10-13 16:47:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:43,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025205779] [2024-10-13 16:47:43,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025205779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:43,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:43,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:47:43,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714602351] [2024-10-13 16:47:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:43,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:43,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:43,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:43,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:43,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:44,702 INFO L124 PetriNetUnfolderBase]: 5142/12284 cut-off events. [2024-10-13 16:47:44,702 INFO L125 PetriNetUnfolderBase]: For 33279/34107 co-relation queries the response was YES. [2024-10-13 16:47:44,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33831 conditions, 12284 events. 5142/12284 cut-off events. For 33279/34107 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 124009 event pairs, 1425 based on Foata normal form. 910/12205 useless extension candidates. Maximal degree in co-relation 18625. Up to 3305 conditions per place. [2024-10-13 16:47:44,773 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2024-10-13 16:47:44,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 199 transitions, 1578 flow [2024-10-13 16:47:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2024-10-13 16:47:44,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-10-13 16:47:44,775 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 546 flow. Second operand 5 states and 366 transitions. [2024-10-13 16:47:44,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 199 transitions, 1578 flow [2024-10-13 16:47:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 1496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:44,877 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 568 flow [2024-10-13 16:47:44,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2024-10-13 16:47:44,878 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 36 predicate places. [2024-10-13 16:47:44,878 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 568 flow [2024-10-13 16:47:44,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:44,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:44,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:44,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 16:47:44,879 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:44,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 790616703, now seen corresponding path program 1 times [2024-10-13 16:47:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:44,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645227347] [2024-10-13 16:47:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:44,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:44,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645227347] [2024-10-13 16:47:44,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645227347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:44,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:44,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668908762] [2024-10-13 16:47:44,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:44,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:44,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:44,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-13 16:47:44,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:44,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:44,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-13 16:47:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:47,079 INFO L124 PetriNetUnfolderBase]: 9368/22151 cut-off events. [2024-10-13 16:47:47,079 INFO L125 PetriNetUnfolderBase]: For 60546/61858 co-relation queries the response was YES. [2024-10-13 16:47:47,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62959 conditions, 22151 events. 9368/22151 cut-off events. For 60546/61858 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 229441 event pairs, 5076 based on Foata normal form. 1136/22211 useless extension candidates. Maximal degree in co-relation 57863. Up to 7515 conditions per place. [2024-10-13 16:47:47,203 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 137 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2024-10-13 16:47:47,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1463 flow [2024-10-13 16:47:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-10-13 16:47:47,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2024-10-13 16:47:47,204 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 568 flow. Second operand 4 states and 317 transitions. [2024-10-13 16:47:47,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1463 flow [2024-10-13 16:47:47,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:47,357 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 687 flow [2024-10-13 16:47:47,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2024-10-13 16:47:47,358 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-13 16:47:47,358 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 687 flow [2024-10-13 16:47:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:47,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:47,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 16:47:47,359 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2010155709, now seen corresponding path program 1 times [2024-10-13 16:47:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930762259] [2024-10-13 16:47:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:47,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930762259] [2024-10-13 16:47:47,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930762259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:47,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352602765] [2024-10-13 16:47:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:47,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:47,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:47:47,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 687 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:47,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:47,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:47:47,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:48,991 INFO L124 PetriNetUnfolderBase]: 10730/23943 cut-off events. [2024-10-13 16:47:48,992 INFO L125 PetriNetUnfolderBase]: For 72240/73717 co-relation queries the response was YES. [2024-10-13 16:47:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69415 conditions, 23943 events. 10730/23943 cut-off events. For 72240/73717 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 240312 event pairs, 4104 based on Foata normal form. 1253/24019 useless extension candidates. Maximal degree in co-relation 38136. Up to 8732 conditions per place. [2024-10-13 16:47:49,185 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 118 selfloop transitions, 13 changer transitions 0/170 dead transitions. [2024-10-13 16:47:49,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1325 flow [2024-10-13 16:47:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-13 16:47:49,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-10-13 16:47:49,186 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 687 flow. Second operand 4 states and 291 transitions. [2024-10-13 16:47:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1325 flow [2024-10-13 16:47:49,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 170 transitions, 1312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:49,525 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 690 flow [2024-10-13 16:47:49,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=690, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-10-13 16:47:49,526 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-13 16:47:49,526 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 690 flow [2024-10-13 16:47:49,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:49,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:49,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:49,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 16:47:49,526 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:49,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2047970264, now seen corresponding path program 1 times [2024-10-13 16:47:49,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:49,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947085109] [2024-10-13 16:47:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:49,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:49,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947085109] [2024-10-13 16:47:49,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947085109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:49,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:49,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141476081] [2024-10-13 16:47:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:49,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:49,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:49,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-13 16:47:49,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:49,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:49,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-13 16:47:49,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:50,970 INFO L124 PetriNetUnfolderBase]: 9053/22609 cut-off events. [2024-10-13 16:47:50,971 INFO L125 PetriNetUnfolderBase]: For 70083/71691 co-relation queries the response was YES. [2024-10-13 16:47:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63336 conditions, 22609 events. 9053/22609 cut-off events. For 70083/71691 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 242732 event pairs, 2362 based on Foata normal form. 1546/22197 useless extension candidates. Maximal degree in co-relation 61108. Up to 7952 conditions per place. [2024-10-13 16:47:51,157 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 98 selfloop transitions, 11 changer transitions 0/149 dead transitions. [2024-10-13 16:47:51,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 149 transitions, 1247 flow [2024-10-13 16:47:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-10-13 16:47:51,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-13 16:47:51,159 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 690 flow. Second operand 4 states and 280 transitions. [2024-10-13 16:47:51,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 149 transitions, 1247 flow [2024-10-13 16:47:51,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 1214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:51,483 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 691 flow [2024-10-13 16:47:51,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2024-10-13 16:47:51,484 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-13 16:47:51,484 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 691 flow [2024-10-13 16:47:51,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:51,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:51,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:51,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-13 16:47:51,485 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1171459115, now seen corresponding path program 1 times [2024-10-13 16:47:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610589681] [2024-10-13 16:47:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610589681] [2024-10-13 16:47:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610589681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109298164] [2024-10-13 16:47:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:51,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:47:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:47:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:47:51,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-13 16:47:51,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 110 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:51,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:51,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-13 16:47:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:53,896 INFO L124 PetriNetUnfolderBase]: 14645/27221 cut-off events. [2024-10-13 16:47:53,897 INFO L125 PetriNetUnfolderBase]: For 93376/96343 co-relation queries the response was YES. [2024-10-13 16:47:53,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86021 conditions, 27221 events. 14645/27221 cut-off events. For 93376/96343 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 243788 event pairs, 786 based on Foata normal form. 2552/28834 useless extension candidates. Maximal degree in co-relation 83586. Up to 11612 conditions per place. [2024-10-13 16:47:54,088 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 216 selfloop transitions, 16 changer transitions 0/265 dead transitions. [2024-10-13 16:47:54,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2461 flow [2024-10-13 16:47:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2024-10-13 16:47:54,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2024-10-13 16:47:54,090 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 691 flow. Second operand 7 states and 458 transitions. [2024-10-13 16:47:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2461 flow [2024-10-13 16:47:54,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:47:54,444 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 699 flow [2024-10-13 16:47:54,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-10-13 16:47:54,444 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-10-13 16:47:54,444 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 699 flow [2024-10-13 16:47:54,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:54,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:54,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:54,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-13 16:47:54,445 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:54,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1661355095, now seen corresponding path program 1 times [2024-10-13 16:47:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829640321] [2024-10-13 16:47:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:54,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:54,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829640321] [2024-10-13 16:47:54,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829640321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:54,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:54,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:54,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112635175] [2024-10-13 16:47:54,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:54,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:54,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:54,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-13 16:47:54,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 699 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:54,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:54,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-13 16:47:54,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:56,642 INFO L124 PetriNetUnfolderBase]: 9053/21545 cut-off events. [2024-10-13 16:47:56,642 INFO L125 PetriNetUnfolderBase]: For 76939/78547 co-relation queries the response was YES. [2024-10-13 16:47:56,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63093 conditions, 21545 events. 9053/21545 cut-off events. For 76939/78547 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 222505 event pairs, 2362 based on Foata normal form. 1546/22064 useless extension candidates. Maximal degree in co-relation 60886. Up to 8085 conditions per place. [2024-10-13 16:47:56,836 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 99 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2024-10-13 16:47:56,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 147 transitions, 1238 flow [2024-10-13 16:47:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-10-13 16:47:56,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 16:47:56,837 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 699 flow. Second operand 4 states and 276 transitions. [2024-10-13 16:47:56,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 147 transitions, 1238 flow [2024-10-13 16:47:57,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 147 transitions, 1211 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:57,164 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 686 flow [2024-10-13 16:47:57,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-10-13 16:47:57,164 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-13 16:47:57,165 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 686 flow [2024-10-13 16:47:57,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:57,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:57,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:57,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-13 16:47:57,165 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:47:57,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1955493359, now seen corresponding path program 1 times [2024-10-13 16:47:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070112389] [2024-10-13 16:47:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:57,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070112389] [2024-10-13 16:47:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070112389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:47:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202367055] [2024-10-13 16:47:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:57,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:47:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:47:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:47:57,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-13 16:47:57,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:57,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:57,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-13 16:47:57,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:59,468 INFO L124 PetriNetUnfolderBase]: 13247/25025 cut-off events. [2024-10-13 16:47:59,469 INFO L125 PetriNetUnfolderBase]: For 95516/98155 co-relation queries the response was YES. [2024-10-13 16:47:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79482 conditions, 25025 events. 13247/25025 cut-off events. For 95516/98155 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 224352 event pairs, 786 based on Foata normal form. 3195/27297 useless extension candidates. Maximal degree in co-relation 77117. Up to 5523 conditions per place. [2024-10-13 16:47:59,701 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 288 selfloop transitions, 22 changer transitions 0/342 dead transitions. [2024-10-13 16:47:59,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 342 transitions, 3268 flow [2024-10-13 16:47:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:47:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:47:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 534 transitions. [2024-10-13 16:47:59,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-10-13 16:47:59,703 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 686 flow. Second operand 9 states and 534 transitions. [2024-10-13 16:47:59,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 342 transitions, 3268 flow [2024-10-13 16:48:00,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 342 transitions, 3246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:48:00,158 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 716 flow [2024-10-13 16:48:00,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=132, PETRI_TRANSITIONS=108} [2024-10-13 16:48:00,160 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-10-13 16:48:00,160 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 716 flow [2024-10-13 16:48:00,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:00,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:00,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:00,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-13 16:48:00,162 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:00,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1003443739, now seen corresponding path program 1 times [2024-10-13 16:48:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547832758] [2024-10-13 16:48:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:00,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547832758] [2024-10-13 16:48:00,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547832758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:00,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:00,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:48:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902801262] [2024-10-13 16:48:00,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:00,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:48:00,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:48:00,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 108 transitions, 716 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:00,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:00,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:48:00,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:01,887 INFO L124 PetriNetUnfolderBase]: 10784/22859 cut-off events. [2024-10-13 16:48:01,888 INFO L125 PetriNetUnfolderBase]: For 91610/93566 co-relation queries the response was YES. [2024-10-13 16:48:01,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74156 conditions, 22859 events. 10784/22859 cut-off events. For 91610/93566 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 221337 event pairs, 4332 based on Foata normal form. 1878/24468 useless extension candidates. Maximal degree in co-relation 71824. Up to 9151 conditions per place. [2024-10-13 16:48:02,071 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 143 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2024-10-13 16:48:02,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 186 transitions, 1667 flow [2024-10-13 16:48:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-10-13 16:48:02,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-10-13 16:48:02,072 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 716 flow. Second operand 4 states and 289 transitions. [2024-10-13 16:48:02,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 186 transitions, 1667 flow [2024-10-13 16:48:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 1623 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 16:48:02,503 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 679 flow [2024-10-13 16:48:02,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-10-13 16:48:02,504 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-13 16:48:02,504 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 679 flow [2024-10-13 16:48:02,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:02,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:02,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:02,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-13 16:48:02,504 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:02,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash -490751145, now seen corresponding path program 1 times [2024-10-13 16:48:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:02,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864904821] [2024-10-13 16:48:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864904821] [2024-10-13 16:48:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864904821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:48:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115738557] [2024-10-13 16:48:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:02,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:48:02,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-13 16:48:02,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:02,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-13 16:48:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:06,387 INFO L124 PetriNetUnfolderBase]: 18272/40809 cut-off events. [2024-10-13 16:48:06,388 INFO L125 PetriNetUnfolderBase]: For 142611/146230 co-relation queries the response was YES. [2024-10-13 16:48:06,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127164 conditions, 40809 events. 18272/40809 cut-off events. For 142611/146230 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 432243 event pairs, 7090 based on Foata normal form. 3245/43843 useless extension candidates. Maximal degree in co-relation 124164. Up to 14674 conditions per place. [2024-10-13 16:48:06,680 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-10-13 16:48:06,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 211 transitions, 1889 flow [2024-10-13 16:48:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2024-10-13 16:48:06,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2024-10-13 16:48:06,681 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 679 flow. Second operand 4 states and 315 transitions. [2024-10-13 16:48:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 211 transitions, 1889 flow [2024-10-13 16:48:07,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 211 transitions, 1864 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:48:07,242 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 799 flow [2024-10-13 16:48:07,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2024-10-13 16:48:07,242 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-10-13 16:48:07,242 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 799 flow [2024-10-13 16:48:07,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:07,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:07,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:07,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-13 16:48:07,242 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:07,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1922004360, now seen corresponding path program 1 times [2024-10-13 16:48:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:07,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809734990] [2024-10-13 16:48:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:07,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:07,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809734990] [2024-10-13 16:48:07,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809734990] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:07,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:48:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155842610] [2024-10-13 16:48:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:07,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:48:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:48:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:48:07,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-13 16:48:07,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 799 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:07,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:07,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-13 16:48:07,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:11,718 INFO L124 PetriNetUnfolderBase]: 24826/46794 cut-off events. [2024-10-13 16:48:11,719 INFO L125 PetriNetUnfolderBase]: For 186459/190839 co-relation queries the response was YES. [2024-10-13 16:48:11,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155626 conditions, 46794 events. 24826/46794 cut-off events. For 186459/190839 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 442059 event pairs, 9436 based on Foata normal form. 4736/51182 useless extension candidates. Maximal degree in co-relation 152424. Up to 20094 conditions per place. [2024-10-13 16:48:12,085 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 226 selfloop transitions, 15 changer transitions 0/273 dead transitions. [2024-10-13 16:48:12,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 273 transitions, 2605 flow [2024-10-13 16:48:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:48:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:48:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-10-13 16:48:12,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-10-13 16:48:12,087 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 799 flow. Second operand 6 states and 424 transitions. [2024-10-13 16:48:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 273 transitions, 2605 flow [2024-10-13 16:48:12,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 273 transitions, 2576 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:48:12,874 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 830 flow [2024-10-13 16:48:12,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=830, PETRI_PLACES=134, PETRI_TRANSITIONS=117} [2024-10-13 16:48:12,875 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2024-10-13 16:48:12,875 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 830 flow [2024-10-13 16:48:12,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:12,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:12,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:12,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-13 16:48:12,875 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:12,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1111849536, now seen corresponding path program 1 times [2024-10-13 16:48:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164857861] [2024-10-13 16:48:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164857861] [2024-10-13 16:48:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164857861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:48:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195387095] [2024-10-13 16:48:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:12,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:48:12,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-13 16:48:12,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 117 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:12,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:12,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-13 16:48:12,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:17,524 INFO L124 PetriNetUnfolderBase]: 24330/46983 cut-off events. [2024-10-13 16:48:17,525 INFO L125 PetriNetUnfolderBase]: For 233802/238475 co-relation queries the response was YES. [2024-10-13 16:48:17,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163161 conditions, 46983 events. 24330/46983 cut-off events. For 233802/238475 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 455268 event pairs, 9060 based on Foata normal form. 4436/50919 useless extension candidates. Maximal degree in co-relation 159746. Up to 19398 conditions per place. [2024-10-13 16:48:18,196 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 156 selfloop transitions, 10 changer transitions 0/200 dead transitions. [2024-10-13 16:48:18,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 1922 flow [2024-10-13 16:48:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-10-13 16:48:18,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-10-13 16:48:18,197 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 830 flow. Second operand 4 states and 287 transitions. [2024-10-13 16:48:18,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 1922 flow [2024-10-13 16:48:19,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 200 transitions, 1800 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-10-13 16:48:19,182 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 863 flow [2024-10-13 16:48:19,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-10-13 16:48:19,182 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-10-13 16:48:19,182 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 863 flow [2024-10-13 16:48:19,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:19,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:19,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:19,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-13 16:48:19,183 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:19,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash 65941779, now seen corresponding path program 1 times [2024-10-13 16:48:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644741204] [2024-10-13 16:48:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:19,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644741204] [2024-10-13 16:48:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644741204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897776456] [2024-10-13 16:48:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:19,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:19,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:19,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:19,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:48:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:19,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:48:19,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:19,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:48:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897776456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:19,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:48:19,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:48:19,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079027486] [2024-10-13 16:48:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:19,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:48:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:48:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:48:19,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-13 16:48:19,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:19,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:19,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-13 16:48:19,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:23,812 INFO L124 PetriNetUnfolderBase]: 18984/40113 cut-off events. [2024-10-13 16:48:23,812 INFO L125 PetriNetUnfolderBase]: For 175335/178663 co-relation queries the response was YES. [2024-10-13 16:48:24,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139657 conditions, 40113 events. 18984/40113 cut-off events. For 175335/178663 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 405013 event pairs, 348 based on Foata normal form. 3216/43135 useless extension candidates. Maximal degree in co-relation 136232. Up to 12454 conditions per place. [2024-10-13 16:48:24,163 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 257 selfloop transitions, 19 changer transitions 0/310 dead transitions. [2024-10-13 16:48:24,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 310 transitions, 3160 flow [2024-10-13 16:48:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:48:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:48:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2024-10-13 16:48:24,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8072916666666666 [2024-10-13 16:48:24,165 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 863 flow. Second operand 6 states and 465 transitions. [2024-10-13 16:48:24,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 310 transitions, 3160 flow [2024-10-13 16:48:25,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 310 transitions, 3115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:48:25,313 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 888 flow [2024-10-13 16:48:25,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=888, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-10-13 16:48:25,314 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 46 predicate places. [2024-10-13 16:48:25,314 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 888 flow [2024-10-13 16:48:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:25,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:25,315 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:48:25,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:48:25,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 16:48:25,519 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-13 16:48:25,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2044195948, now seen corresponding path program 1 times [2024-10-13 16:48:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377869072] [2024-10-13 16:48:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377869072] [2024-10-13 16:48:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377869072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489666240] [2024-10-13 16:48:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:25,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:25,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:48:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:25,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:48:25,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:25,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:48:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489666240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:48:25,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:48:25,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:48:25,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347501760] [2024-10-13 16:48:25,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:48:25,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:48:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:48:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:48:25,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-13 16:48:25,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 888 flow. Second operand has 12 states, 12 states have (on average 61.75) internal successors, (741), 12 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:25,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:25,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-13 16:48:25,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand