./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:43:34,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:43:34,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:43:34,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:43:34,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:43:34,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:43:34,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:43:34,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:43:34,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:43:34,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:43:34,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:43:34,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:43:34,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:43:34,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:43:34,212 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:43:34,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:43:34,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:43:34,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:43:34,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:43:34,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:43:34,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:43:34,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:43:34,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:43:34,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:43:34,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:43:34,222 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:43:34,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:43:34,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:43:34,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:43:34,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:43:34,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:43:34,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:43:34,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:43:34,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:43:34,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:43:34,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:43:34,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:43:34,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:43:34,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:43:34,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:43:34,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:43:34,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:43:34,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:43:34,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:43:34,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-12 20:43:34,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:43:34,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:43:34,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:43:34,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:43:34,504 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:43:34,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-12 20:43:35,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:43:36,168 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:43:36,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-12 20:43:36,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f281605/ecf927f6eb1a46bb813995d627d10df4/FLAGd10976449 [2024-11-12 20:43:36,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f281605/ecf927f6eb1a46bb813995d627d10df4 [2024-11-12 20:43:36,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:43:36,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:43:36,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:43:36,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:43:36,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:43:36,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75713b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36, skipping insertion in model container [2024-11-12 20:43:36,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:43:36,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:43:36,740 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:43:36,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:43:36,779 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:43:36,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36 WrapperNode [2024-11-12 20:43:36,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:43:36,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:43:36,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:43:36,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:43:36,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,829 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2024-11-12 20:43:36,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:43:36,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:43:36,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:43:36,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:43:36,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,874 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]. [2024-11-12 20:43:36,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:43:36,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:43:36,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:43:36,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:43:36,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (1/1) ... [2024-11-12 20:43:36,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:43:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:43:36,934 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) [2024-11-12 20:43:36,940 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 [2024-11-12 20:43:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:43:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:43:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:43:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:43:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:43:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:43:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:43:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:43:36,981 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:43:37,076 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:43:37,078 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:43:37,501 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:43:37,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:43:37,769 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:43:37,770 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:43:37,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:43:37 BoogieIcfgContainer [2024-11-12 20:43:37,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:43:37,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:43:37,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:43:37,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:43:37,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:43:36" (1/3) ... [2024-11-12 20:43:37,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e437776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:43:37, skipping insertion in model container [2024-11-12 20:43:37,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:43:36" (2/3) ... [2024-11-12 20:43:37,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e437776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:43:37, skipping insertion in model container [2024-11-12 20:43:37,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:43:37" (3/3) ... [2024-11-12 20:43:37,781 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-12 20:43:37,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:43:37,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-11-12 20:43:37,800 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:43:37,877 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:43:37,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2024-11-12 20:43:37,968 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2024-11-12 20:43:37,968 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:43:37,973 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. [2024-11-12 20:43:37,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2024-11-12 20:43:37,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2024-11-12 20:43:37,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:43:38,000 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;@7b9a5340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:43:38,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-11-12 20:43:38,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:43:38,008 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-12 20:43:38,008 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:43:38,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:38,009 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:43:38,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:38,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -372165075, now seen corresponding path program 1 times [2024-11-12 20:43:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:38,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774918939] [2024-11-12 20:43:38,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774918939] [2024-11-12 20:43:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774918939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460956671] [2024-11-12 20:43:38,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:38,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:38,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:38,359 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) [2024-11-12 20:43:38,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:38,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:38,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:38,867 INFO L124 PetriNetUnfolderBase]: 1063/2550 cut-off events. [2024-11-12 20:43:38,868 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-12 20:43:38,877 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. [2024-11-12 20:43:38,894 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 72 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-11-12 20:43:38,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 427 flow [2024-11-12 20:43:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-12 20:43:38,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-11-12 20:43:38,913 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 296 transitions. [2024-11-12 20:43:38,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 427 flow [2024-11-12 20:43:38,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:38,926 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 222 flow [2024-11-12 20:43:38,928 INFO L262 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} [2024-11-12 20:43:38,934 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-11-12 20:43:38,934 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 222 flow [2024-11-12 20:43:38,935 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) [2024-11-12 20:43:38,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:38,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:38,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:43:38,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:38,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1347785331, now seen corresponding path program 1 times [2024-11-12 20:43:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434265389] [2024-11-12 20:43:38,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434265389] [2024-11-12 20:43:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434265389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495057437] [2024-11-12 20:43:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:39,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:39,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-11-12 20:43:39,111 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) [2024-11-12 20:43:39,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:39,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-11-12 20:43:39,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:39,376 INFO L124 PetriNetUnfolderBase]: 873/2206 cut-off events. [2024-11-12 20:43:39,377 INFO L125 PetriNetUnfolderBase]: For 372/380 co-relation queries the response was YES. [2024-11-12 20:43:39,382 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. [2024-11-12 20:43:39,394 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-12 20:43:39,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 364 flow [2024-11-12 20:43:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-11-12 20:43:39,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-11-12 20:43:39,397 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 222 flow. Second operand 4 states and 281 transitions. [2024-11-12 20:43:39,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 364 flow [2024-11-12 20:43:39,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:43:39,403 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 228 flow [2024-11-12 20:43:39,404 INFO L262 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} [2024-11-12 20:43:39,405 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-11-12 20:43:39,405 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 228 flow [2024-11-12 20:43:39,405 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) [2024-11-12 20:43:39,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:39,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:39,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:43:39,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:39,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:39,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1168358703, now seen corresponding path program 1 times [2024-11-12 20:43:39,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864700549] [2024-11-12 20:43:39,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:39,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:39,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864700549] [2024-11-12 20:43:39,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864700549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:39,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928774593] [2024-11-12 20:43:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:39,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:39,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-11-12 20:43:39,528 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) [2024-11-12 20:43:39,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:39,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-11-12 20:43:39,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:39,776 INFO L124 PetriNetUnfolderBase]: 881/2192 cut-off events. [2024-11-12 20:43:39,776 INFO L125 PetriNetUnfolderBase]: For 685/693 co-relation queries the response was YES. [2024-11-12 20:43:39,783 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. [2024-11-12 20:43:39,793 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 51 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-12 20:43:39,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 370 flow [2024-11-12 20:43:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-11-12 20:43:39,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-11-12 20:43:39,798 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 228 flow. Second operand 4 states and 277 transitions. [2024-11-12 20:43:39,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 370 flow [2024-11-12 20:43:39,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:39,805 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 224 flow [2024-11-12 20:43:39,806 INFO L262 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} [2024-11-12 20:43:39,807 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-11-12 20:43:39,808 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 224 flow [2024-11-12 20:43:39,808 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) [2024-11-12 20:43:39,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:39,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:39,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:43:39,808 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:39,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:39,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1889321792, now seen corresponding path program 1 times [2024-11-12 20:43:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530707437] [2024-11-12 20:43:39,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:39,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530707437] [2024-11-12 20:43:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530707437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069502885] [2024-11-12 20:43:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:39,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:39,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:39,898 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) [2024-11-12 20:43:39,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:39,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:39,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:40,243 INFO L124 PetriNetUnfolderBase]: 1246/2933 cut-off events. [2024-11-12 20:43:40,244 INFO L125 PetriNetUnfolderBase]: For 809/844 co-relation queries the response was YES. [2024-11-12 20:43:40,250 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. [2024-11-12 20:43:40,265 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 76 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-11-12 20:43:40,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 514 flow [2024-11-12 20:43:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-11-12 20:43:40,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-12 20:43:40,267 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 224 flow. Second operand 4 states and 294 transitions. [2024-11-12 20:43:40,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 514 flow [2024-11-12 20:43:40,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:40,271 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 250 flow [2024-11-12 20:43:40,271 INFO L262 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} [2024-11-12 20:43:40,272 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2024-11-12 20:43:40,272 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 250 flow [2024-11-12 20:43:40,273 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) [2024-11-12 20:43:40,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:40,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:40,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:43:40,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:40,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1859381675, now seen corresponding path program 1 times [2024-11-12 20:43:40,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:40,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793020146] [2024-11-12 20:43:40,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:40,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:40,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:40,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793020146] [2024-11-12 20:43:40,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793020146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:40,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:40,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:40,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738334926] [2024-11-12 20:43:40,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:40,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:43:40,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:40,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:43:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:43:40,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-11-12 20:43:40,424 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) [2024-11-12 20:43:40,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:40,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-11-12 20:43:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:40,767 INFO L124 PetriNetUnfolderBase]: 1330/2890 cut-off events. [2024-11-12 20:43:40,767 INFO L125 PetriNetUnfolderBase]: For 769/810 co-relation queries the response was YES. [2024-11-12 20:43:40,776 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. [2024-11-12 20:43:40,791 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2024-11-12 20:43:40,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 524 flow [2024-11-12 20:43:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:43:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:43:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2024-11-12 20:43:40,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2024-11-12 20:43:40,793 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 250 flow. Second operand 5 states and 349 transitions. [2024-11-12 20:43:40,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 524 flow [2024-11-12 20:43:40,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:43:40,801 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 260 flow [2024-11-12 20:43:40,801 INFO L262 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} [2024-11-12 20:43:40,802 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-11-12 20:43:40,802 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 260 flow [2024-11-12 20:43:40,802 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) [2024-11-12 20:43:40,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:40,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:40,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:43:40,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:40,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1859380650, now seen corresponding path program 1 times [2024-11-12 20:43:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720744027] [2024-11-12 20:43:40,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:40,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720744027] [2024-11-12 20:43:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720744027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:40,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860606892] [2024-11-12 20:43:40,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:40,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:40,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:40,888 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) [2024-11-12 20:43:40,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:40,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:41,186 INFO L124 PetriNetUnfolderBase]: 1112/2762 cut-off events. [2024-11-12 20:43:41,186 INFO L125 PetriNetUnfolderBase]: For 1214/1237 co-relation queries the response was YES. [2024-11-12 20:43:41,195 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. [2024-11-12 20:43:41,215 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 76 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-12 20:43:41,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 532 flow [2024-11-12 20:43:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-12 20:43:41,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-11-12 20:43:41,217 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 260 flow. Second operand 4 states and 291 transitions. [2024-11-12 20:43:41,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 532 flow [2024-11-12 20:43:41,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 520 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:43:41,224 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 250 flow [2024-11-12 20:43:41,226 INFO L262 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} [2024-11-12 20:43:41,226 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-11-12 20:43:41,227 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 250 flow [2024-11-12 20:43:41,227 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) [2024-11-12 20:43:41,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:41,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:41,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:43:41,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:41,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1560567403, now seen corresponding path program 1 times [2024-11-12 20:43:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:41,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877251291] [2024-11-12 20:43:41,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:41,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877251291] [2024-11-12 20:43:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877251291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474682205] [2024-11-12 20:43:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:41,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:41,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-11-12 20:43:41,312 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) [2024-11-12 20:43:41,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:41,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-11-12 20:43:41,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:41,561 INFO L124 PetriNetUnfolderBase]: 1010/2629 cut-off events. [2024-11-12 20:43:41,561 INFO L125 PetriNetUnfolderBase]: For 956/983 co-relation queries the response was YES. [2024-11-12 20:43:41,569 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. [2024-11-12 20:43:41,580 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-12 20:43:41,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 422 flow [2024-11-12 20:43:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-11-12 20:43:41,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-12 20:43:41,582 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 250 flow. Second operand 4 states and 280 transitions. [2024-11-12 20:43:41,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 422 flow [2024-11-12 20:43:41,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:43:41,588 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 250 flow [2024-11-12 20:43:41,589 INFO L262 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} [2024-11-12 20:43:41,589 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-11-12 20:43:41,590 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 250 flow [2024-11-12 20:43:41,590 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) [2024-11-12 20:43:41,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:41,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:41,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:43:41,592 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:41,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1806256300, now seen corresponding path program 1 times [2024-11-12 20:43:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566749037] [2024-11-12 20:43:41,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566749037] [2024-11-12 20:43:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566749037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:43:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394091319] [2024-11-12 20:43:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:41,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:43:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:43:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:43:41,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-11-12 20:43:41,729 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) [2024-11-12 20:43:41,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:41,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-11-12 20:43:41,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:42,151 INFO L124 PetriNetUnfolderBase]: 1293/2819 cut-off events. [2024-11-12 20:43:42,151 INFO L125 PetriNetUnfolderBase]: For 1297/1348 co-relation queries the response was YES. [2024-11-12 20:43:42,159 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. [2024-11-12 20:43:42,170 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 90 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2024-11-12 20:43:42,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 640 flow [2024-11-12 20:43:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:43:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:43:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-11-12 20:43:42,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-12 20:43:42,173 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 250 flow. Second operand 6 states and 402 transitions. [2024-11-12 20:43:42,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 640 flow [2024-11-12 20:43:42,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:42,180 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 267 flow [2024-11-12 20:43:42,180 INFO L262 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} [2024-11-12 20:43:42,182 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-11-12 20:43:42,182 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 267 flow [2024-11-12 20:43:42,182 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) [2024-11-12 20:43:42,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:42,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:42,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:43:42,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:42,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1132918276, now seen corresponding path program 1 times [2024-11-12 20:43:42,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:42,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135356962] [2024-11-12 20:43:42,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:42,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:42,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:42,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135356962] [2024-11-12 20:43:42,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135356962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:42,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:42,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828233779] [2024-11-12 20:43:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:42,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:42,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-11-12 20:43:42,246 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) [2024-11-12 20:43:42,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:42,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-11-12 20:43:42,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:42,513 INFO L124 PetriNetUnfolderBase]: 1012/2582 cut-off events. [2024-11-12 20:43:42,513 INFO L125 PetriNetUnfolderBase]: For 1882/1966 co-relation queries the response was YES. [2024-11-12 20:43:42,520 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. [2024-11-12 20:43:42,530 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 56 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-12 20:43:42,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 457 flow [2024-11-12 20:43:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-11-12 20:43:42,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-12 20:43:42,532 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 267 flow. Second operand 4 states and 276 transitions. [2024-11-12 20:43:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 457 flow [2024-11-12 20:43:42,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:43:42,538 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 258 flow [2024-11-12 20:43:42,538 INFO L262 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} [2024-11-12 20:43:42,539 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-11-12 20:43:42,539 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 258 flow [2024-11-12 20:43:42,539 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) [2024-11-12 20:43:42,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:42,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:42,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:43:42,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:42,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash 787947419, now seen corresponding path program 1 times [2024-11-12 20:43:42,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:42,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930986232] [2024-11-12 20:43:42,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:42,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:42,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930986232] [2024-11-12 20:43:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930986232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:43:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680726768] [2024-11-12 20:43:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:42,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:43:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:43:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:43:42,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-11-12 20:43:42,644 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) [2024-11-12 20:43:42,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:42,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-11-12 20:43:42,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:43,010 INFO L124 PetriNetUnfolderBase]: 1252/2772 cut-off events. [2024-11-12 20:43:43,010 INFO L125 PetriNetUnfolderBase]: For 1338/1363 co-relation queries the response was YES. [2024-11-12 20:43:43,017 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. [2024-11-12 20:43:43,026 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 113 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-12 20:43:43,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 167 transitions, 758 flow [2024-11-12 20:43:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:43:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:43:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-11-12 20:43:43,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-11-12 20:43:43,029 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 258 flow. Second operand 6 states and 424 transitions. [2024-11-12 20:43:43,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 167 transitions, 758 flow [2024-11-12 20:43:43,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 721 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:43:43,037 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 274 flow [2024-11-12 20:43:43,038 INFO L262 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} [2024-11-12 20:43:43,039 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-11-12 20:43:43,040 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 274 flow [2024-11-12 20:43:43,040 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) [2024-11-12 20:43:43,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:43,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:43,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:43:43,041 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:43,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash 760729006, now seen corresponding path program 1 times [2024-11-12 20:43:43,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:43,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503595057] [2024-11-12 20:43:43,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503595057] [2024-11-12 20:43:43,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503595057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:43,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352307115] [2024-11-12 20:43:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:43,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:43,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:43,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:43,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:43,107 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) [2024-11-12 20:43:43,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:43,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:43,398 INFO L124 PetriNetUnfolderBase]: 1093/2619 cut-off events. [2024-11-12 20:43:43,398 INFO L125 PetriNetUnfolderBase]: For 2292/2372 co-relation queries the response was YES. [2024-11-12 20:43:43,405 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. [2024-11-12 20:43:43,415 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 80 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-12 20:43:43,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 602 flow [2024-11-12 20:43:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-11-12 20:43:43,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-11-12 20:43:43,417 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 274 flow. Second operand 4 states and 289 transitions. [2024-11-12 20:43:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 602 flow [2024-11-12 20:43:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 559 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-12 20:43:43,423 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 257 flow [2024-11-12 20:43:43,423 INFO L262 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} [2024-11-12 20:43:43,424 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-11-12 20:43:43,424 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 257 flow [2024-11-12 20:43:43,424 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) [2024-11-12 20:43:43,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:43,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:43,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:43:43,425 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:43,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 760727981, now seen corresponding path program 1 times [2024-11-12 20:43:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596485653] [2024-11-12 20:43:43,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596485653] [2024-11-12 20:43:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596485653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716325813] [2024-11-12 20:43:43,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:43,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:43:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:43:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:43:43,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-11-12 20:43:43,504 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) [2024-11-12 20:43:43,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:43,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-11-12 20:43:43,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:43,860 INFO L124 PetriNetUnfolderBase]: 1264/2720 cut-off events. [2024-11-12 20:43:43,860 INFO L125 PetriNetUnfolderBase]: For 1563/1663 co-relation queries the response was YES. [2024-11-12 20:43:43,867 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. [2024-11-12 20:43:43,878 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 78 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-11-12 20:43:43,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 563 flow [2024-11-12 20:43:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:43:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:43:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2024-11-12 20:43:43,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2024-11-12 20:43:43,880 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 257 flow. Second operand 5 states and 347 transitions. [2024-11-12 20:43:43,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 563 flow [2024-11-12 20:43:43,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:43:43,886 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 261 flow [2024-11-12 20:43:43,886 INFO L262 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} [2024-11-12 20:43:43,887 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-11-12 20:43:43,887 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 261 flow [2024-11-12 20:43:43,887 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) [2024-11-12 20:43:43,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:43,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:43,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:43:43,888 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:43,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash -645491785, now seen corresponding path program 1 times [2024-11-12 20:43:43,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:43,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251104237] [2024-11-12 20:43:43,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:43,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:43,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251104237] [2024-11-12 20:43:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251104237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:43,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:43,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:43,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019707821] [2024-11-12 20:43:43,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:43,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:43,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:43,978 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) [2024-11-12 20:43:43,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:43,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:43,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:44,349 INFO L124 PetriNetUnfolderBase]: 1379/3226 cut-off events. [2024-11-12 20:43:44,350 INFO L125 PetriNetUnfolderBase]: For 1869/1950 co-relation queries the response was YES. [2024-11-12 20:43:44,356 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. [2024-11-12 20:43:44,366 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-11-12 20:43:44,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 569 flow [2024-11-12 20:43:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-12 20:43:44,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-11-12 20:43:44,368 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 261 flow. Second operand 4 states and 296 transitions. [2024-11-12 20:43:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 569 flow [2024-11-12 20:43:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:44,376 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 290 flow [2024-11-12 20:43:44,376 INFO L262 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} [2024-11-12 20:43:44,377 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2024-11-12 20:43:44,378 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 290 flow [2024-11-12 20:43:44,378 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) [2024-11-12 20:43:44,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:44,378 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:44,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:43:44,378 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:44,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2107731751, now seen corresponding path program 1 times [2024-11-12 20:43:44,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:44,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538376309] [2024-11-12 20:43:44,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538376309] [2024-11-12 20:43:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538376309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:44,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:43:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227481031] [2024-11-12 20:43:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:44,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:43:44,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:43:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:43:44,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-11-12 20:43:44,501 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) [2024-11-12 20:43:44,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:44,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-11-12 20:43:44,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:44,884 INFO L124 PetriNetUnfolderBase]: 1414/3063 cut-off events. [2024-11-12 20:43:44,885 INFO L125 PetriNetUnfolderBase]: For 2674/2846 co-relation queries the response was YES. [2024-11-12 20:43:44,894 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. [2024-11-12 20:43:44,943 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 103 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-11-12 20:43:44,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 802 flow [2024-11-12 20:43:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:43:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:43:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-11-12 20:43:44,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-12 20:43:44,946 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 290 flow. Second operand 6 states and 399 transitions. [2024-11-12 20:43:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 802 flow [2024-11-12 20:43:44,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:43:44,953 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 315 flow [2024-11-12 20:43:44,953 INFO L262 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} [2024-11-12 20:43:44,954 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 15 predicate places. [2024-11-12 20:43:44,954 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 315 flow [2024-11-12 20:43:44,954 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) [2024-11-12 20:43:44,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:44,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:44,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:43:44,955 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:44,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1464591931, now seen corresponding path program 1 times [2024-11-12 20:43:44,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:44,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674133067] [2024-11-12 20:43:44,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:45,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:45,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674133067] [2024-11-12 20:43:45,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674133067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:45,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:45,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:43:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414436460] [2024-11-12 20:43:45,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:45,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:43:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:43:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:43:45,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-11-12 20:43:45,069 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) [2024-11-12 20:43:45,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:45,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-11-12 20:43:45,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:45,663 INFO L124 PetriNetUnfolderBase]: 2099/4807 cut-off events. [2024-11-12 20:43:45,663 INFO L125 PetriNetUnfolderBase]: For 4844/5046 co-relation queries the response was YES. [2024-11-12 20:43:45,676 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. [2024-11-12 20:43:45,694 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 147 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2024-11-12 20:43:45,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 202 transitions, 1067 flow [2024-11-12 20:43:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:43:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:43:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2024-11-12 20:43:45,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-11-12 20:43:45,696 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 315 flow. Second operand 7 states and 486 transitions. [2024-11-12 20:43:45,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 202 transitions, 1067 flow [2024-11-12 20:43:45,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 202 transitions, 1009 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:43:45,715 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 384 flow [2024-11-12 20:43:45,715 INFO L262 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} [2024-11-12 20:43:45,716 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2024-11-12 20:43:45,716 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 384 flow [2024-11-12 20:43:45,717 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) [2024-11-12 20:43:45,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:45,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:45,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:43:45,717 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:45,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1862492755, now seen corresponding path program 1 times [2024-11-12 20:43:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:45,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850617452] [2024-11-12 20:43:45,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:45,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:45,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850617452] [2024-11-12 20:43:45,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850617452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:45,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:45,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223742176] [2024-11-12 20:43:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:45,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:45,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:45,782 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) [2024-11-12 20:43:45,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:45,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:45,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:46,294 INFO L124 PetriNetUnfolderBase]: 2179/4833 cut-off events. [2024-11-12 20:43:46,294 INFO L125 PetriNetUnfolderBase]: For 7374/7666 co-relation queries the response was YES. [2024-11-12 20:43:46,311 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. [2024-11-12 20:43:46,331 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 100 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-11-12 20:43:46,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 151 transitions, 911 flow [2024-11-12 20:43:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-12 20:43:46,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-11-12 20:43:46,334 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 384 flow. Second operand 4 states and 287 transitions. [2024-11-12 20:43:46,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 151 transitions, 911 flow [2024-11-12 20:43:46,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 891 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 20:43:46,356 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 387 flow [2024-11-12 20:43:46,357 INFO L262 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} [2024-11-12 20:43:46,357 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2024-11-12 20:43:46,357 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 387 flow [2024-11-12 20:43:46,358 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) [2024-11-12 20:43:46,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:46,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:46,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:43:46,359 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:46,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1842321381, now seen corresponding path program 1 times [2024-11-12 20:43:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:46,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370633684] [2024-11-12 20:43:46,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:46,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370633684] [2024-11-12 20:43:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370633684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:46,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:46,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:43:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014290973] [2024-11-12 20:43:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:46,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:43:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:43:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:43:46,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:46,437 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) [2024-11-12 20:43:46,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:46,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:46,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:47,052 INFO L124 PetriNetUnfolderBase]: 2586/6161 cut-off events. [2024-11-12 20:43:47,052 INFO L125 PetriNetUnfolderBase]: For 8697/8892 co-relation queries the response was YES. [2024-11-12 20:43:47,075 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. [2024-11-12 20:43:47,097 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 115 selfloop transitions, 10 changer transitions 0/166 dead transitions. [2024-11-12 20:43:47,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 911 flow [2024-11-12 20:43:47,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:43:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:43:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-11-12 20:43:47,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.76875 [2024-11-12 20:43:47,099 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 387 flow. Second operand 5 states and 369 transitions. [2024-11-12 20:43:47,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 911 flow [2024-11-12 20:43:47,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:43:47,130 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 427 flow [2024-11-12 20:43:47,131 INFO L262 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} [2024-11-12 20:43:47,131 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 24 predicate places. [2024-11-12 20:43:47,132 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 427 flow [2024-11-12 20:43:47,132 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) [2024-11-12 20:43:47,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:47,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:47,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:43:47,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:47,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1694324694, now seen corresponding path program 1 times [2024-11-12 20:43:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998882056] [2024-11-12 20:43:47,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:47,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998882056] [2024-11-12 20:43:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998882056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:47,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:47,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821484244] [2024-11-12 20:43:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:47,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:47,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:47,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:47,196 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) [2024-11-12 20:43:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:47,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:47,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:47,771 INFO L124 PetriNetUnfolderBase]: 3213/7418 cut-off events. [2024-11-12 20:43:47,772 INFO L125 PetriNetUnfolderBase]: For 12698/13028 co-relation queries the response was YES. [2024-11-12 20:43:47,799 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. [2024-11-12 20:43:47,827 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 111 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-11-12 20:43:47,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1071 flow [2024-11-12 20:43:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-11-12 20:43:47,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-12 20:43:47,829 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 427 flow. Second operand 4 states and 294 transitions. [2024-11-12 20:43:47,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1071 flow [2024-11-12 20:43:47,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 1036 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:47,869 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 456 flow [2024-11-12 20:43:47,870 INFO L262 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} [2024-11-12 20:43:47,870 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-11-12 20:43:47,870 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 456 flow [2024-11-12 20:43:47,870 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) [2024-11-12 20:43:47,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:47,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:43:47,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:47,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1277388195, now seen corresponding path program 1 times [2024-11-12 20:43:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539835037] [2024-11-12 20:43:47,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539835037] [2024-11-12 20:43:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539835037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:48,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:48,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:43:48,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500209807] [2024-11-12 20:43:48,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:48,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:43:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:43:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:43:48,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-11-12 20:43:48,095 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) [2024-11-12 20:43:48,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:48,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-11-12 20:43:48,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:48,983 INFO L124 PetriNetUnfolderBase]: 4198/7932 cut-off events. [2024-11-12 20:43:48,984 INFO L125 PetriNetUnfolderBase]: For 12507/13024 co-relation queries the response was YES. [2024-11-12 20:43:49,000 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. [2024-11-12 20:43:49,018 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 136 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-11-12 20:43:49,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1186 flow [2024-11-12 20:43:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:43:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:43:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2024-11-12 20:43:49,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-12 20:43:49,020 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 456 flow. Second operand 7 states and 462 transitions. [2024-11-12 20:43:49,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1186 flow [2024-11-12 20:43:49,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 1186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:43:49,070 INFO L231 Difference]: Finished difference. Result has 120 places, 99 transitions, 486 flow [2024-11-12 20:43:49,070 INFO L262 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} [2024-11-12 20:43:49,071 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 31 predicate places. [2024-11-12 20:43:49,071 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 486 flow [2024-11-12 20:43:49,071 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) [2024-11-12 20:43:49,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:49,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:49,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:43:49,071 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:49,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1942041184, now seen corresponding path program 1 times [2024-11-12 20:43:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431970730] [2024-11-12 20:43:49,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:49,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431970730] [2024-11-12 20:43:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431970730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:49,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:49,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067169492] [2024-11-12 20:43:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:49,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:49,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-11-12 20:43:49,122 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) [2024-11-12 20:43:49,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:49,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-11-12 20:43:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:49,618 INFO L124 PetriNetUnfolderBase]: 2584/6344 cut-off events. [2024-11-12 20:43:49,618 INFO L125 PetriNetUnfolderBase]: For 15151/15458 co-relation queries the response was YES. [2024-11-12 20:43:49,643 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. [2024-11-12 20:43:49,668 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 66 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-11-12 20:43:49,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 743 flow [2024-11-12 20:43:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-11-12 20:43:49,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-11-12 20:43:49,670 INFO L175 Difference]: Start difference. First operand has 120 places, 99 transitions, 486 flow. Second operand 4 states and 281 transitions. [2024-11-12 20:43:49,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 743 flow [2024-11-12 20:43:49,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 716 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:43:49,717 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 477 flow [2024-11-12 20:43:49,717 INFO L262 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} [2024-11-12 20:43:49,718 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2024-11-12 20:43:49,718 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 477 flow [2024-11-12 20:43:49,718 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) [2024-11-12 20:43:49,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:49,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:49,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 20:43:49,719 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:49,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -984457133, now seen corresponding path program 1 times [2024-11-12 20:43:49,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:49,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369819938] [2024-11-12 20:43:49,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:49,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369819938] [2024-11-12 20:43:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369819938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:49,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:49,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:43:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745314910] [2024-11-12 20:43:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:49,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:43:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:43:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:43:49,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-11-12 20:43:49,852 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) [2024-11-12 20:43:49,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:49,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-11-12 20:43:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:50,899 INFO L124 PetriNetUnfolderBase]: 4596/10389 cut-off events. [2024-11-12 20:43:50,899 INFO L125 PetriNetUnfolderBase]: For 23319/23782 co-relation queries the response was YES. [2024-11-12 20:43:50,928 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. [2024-11-12 20:43:50,955 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 201 selfloop transitions, 13 changer transitions 0/253 dead transitions. [2024-11-12 20:43:50,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 253 transitions, 2013 flow [2024-11-12 20:43:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:43:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:43:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2024-11-12 20:43:50,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2024-11-12 20:43:50,957 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 477 flow. Second operand 7 states and 481 transitions. [2024-11-12 20:43:50,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 253 transitions, 2013 flow [2024-11-12 20:43:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 253 transitions, 1891 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:51,065 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 528 flow [2024-11-12 20:43:51,066 INFO L262 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} [2024-11-12 20:43:51,066 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 33 predicate places. [2024-11-12 20:43:51,066 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 528 flow [2024-11-12 20:43:51,067 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) [2024-11-12 20:43:51,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:51,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:51,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 20:43:51,067 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:51,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -944327586, now seen corresponding path program 1 times [2024-11-12 20:43:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914336789] [2024-11-12 20:43:51,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:51,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914336789] [2024-11-12 20:43:51,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914336789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:51,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:43:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740469874] [2024-11-12 20:43:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:51,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:43:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:43:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:43:51,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-11-12 20:43:51,285 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) [2024-11-12 20:43:51,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:51,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-11-12 20:43:51,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:52,306 INFO L124 PetriNetUnfolderBase]: 5379/10327 cut-off events. [2024-11-12 20:43:52,307 INFO L125 PetriNetUnfolderBase]: For 26270/27285 co-relation queries the response was YES. [2024-11-12 20:43:52,340 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. [2024-11-12 20:43:52,370 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 205 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-11-12 20:43:52,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 265 transitions, 1962 flow [2024-11-12 20:43:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:43:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:43:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2024-11-12 20:43:52,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6261574074074074 [2024-11-12 20:43:52,372 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 528 flow. Second operand 9 states and 541 transitions. [2024-11-12 20:43:52,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 265 transitions, 1962 flow [2024-11-12 20:43:52,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 265 transitions, 1904 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-12 20:43:52,482 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 572 flow [2024-11-12 20:43:52,482 INFO L262 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} [2024-11-12 20:43:52,483 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-11-12 20:43:52,483 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 572 flow [2024-11-12 20:43:52,483 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) [2024-11-12 20:43:52,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:52,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:52,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 20:43:52,484 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:52,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash -650189322, now seen corresponding path program 1 times [2024-11-12 20:43:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726110588] [2024-11-12 20:43:52,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:52,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:52,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726110588] [2024-11-12 20:43:52,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726110588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:52,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:52,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954545856] [2024-11-12 20:43:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:52,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:52,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-11-12 20:43:52,551 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) [2024-11-12 20:43:52,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:52,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-11-12 20:43:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:53,143 INFO L124 PetriNetUnfolderBase]: 3856/8972 cut-off events. [2024-11-12 20:43:53,143 INFO L125 PetriNetUnfolderBase]: For 28065/28702 co-relation queries the response was YES. [2024-11-12 20:43:53,174 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. [2024-11-12 20:43:53,198 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 76 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-11-12 20:43:53,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 893 flow [2024-11-12 20:43:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-11-12 20:43:53,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-11-12 20:43:53,200 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 572 flow. Second operand 4 states and 277 transitions. [2024-11-12 20:43:53,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 893 flow [2024-11-12 20:43:53,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 129 transitions, 853 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 20:43:53,283 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 546 flow [2024-11-12 20:43:53,283 INFO L262 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} [2024-11-12 20:43:53,284 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2024-11-12 20:43:53,284 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 546 flow [2024-11-12 20:43:53,284 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) [2024-11-12 20:43:53,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:53,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:53,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 20:43:53,284 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:53,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash -453430994, now seen corresponding path program 1 times [2024-11-12 20:43:53,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:53,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612464816] [2024-11-12 20:43:53,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612464816] [2024-11-12 20:43:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612464816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:53,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:43:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280505099] [2024-11-12 20:43:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:53,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:43:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:43:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:43:53,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:53,364 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) [2024-11-12 20:43:53,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:53,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:53,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:54,447 INFO L124 PetriNetUnfolderBase]: 5142/12284 cut-off events. [2024-11-12 20:43:54,448 INFO L125 PetriNetUnfolderBase]: For 33279/34107 co-relation queries the response was YES. [2024-11-12 20:43:54,492 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. [2024-11-12 20:43:54,535 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2024-11-12 20:43:54,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 199 transitions, 1578 flow [2024-11-12 20:43:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:43:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:43:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2024-11-12 20:43:54,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-11-12 20:43:54,536 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 546 flow. Second operand 5 states and 366 transitions. [2024-11-12 20:43:54,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 199 transitions, 1578 flow [2024-11-12 20:43:54,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 1496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:54,645 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 568 flow [2024-11-12 20:43:54,645 INFO L262 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} [2024-11-12 20:43:54,645 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 36 predicate places. [2024-11-12 20:43:54,646 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 568 flow [2024-11-12 20:43:54,646 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) [2024-11-12 20:43:54,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:54,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:54,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:43:54,646 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:54,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 790616703, now seen corresponding path program 1 times [2024-11-12 20:43:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697950567] [2024-11-12 20:43:54,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:54,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697950567] [2024-11-12 20:43:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697950567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:54,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944973533] [2024-11-12 20:43:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:54,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:54,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-11-12 20:43:54,685 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) [2024-11-12 20:43:54,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:54,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-11-12 20:43:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:56,327 INFO L124 PetriNetUnfolderBase]: 9368/22151 cut-off events. [2024-11-12 20:43:56,327 INFO L125 PetriNetUnfolderBase]: For 60546/61858 co-relation queries the response was YES. [2024-11-12 20:43:56,402 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. [2024-11-12 20:43:56,462 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 137 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2024-11-12 20:43:56,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1463 flow [2024-11-12 20:43:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-11-12 20:43:56,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2024-11-12 20:43:56,463 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 568 flow. Second operand 4 states and 317 transitions. [2024-11-12 20:43:56,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1463 flow [2024-11-12 20:43:56,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:43:56,792 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 687 flow [2024-11-12 20:43:56,792 INFO L262 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} [2024-11-12 20:43:56,793 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-11-12 20:43:56,793 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 687 flow [2024-11-12 20:43:56,793 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) [2024-11-12 20:43:56,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:56,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:56,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:43:56,794 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:56,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2010155709, now seen corresponding path program 1 times [2024-11-12 20:43:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294750617] [2024-11-12 20:43:56,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294750617] [2024-11-12 20:43:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294750617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:56,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:56,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:43:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718599373] [2024-11-12 20:43:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:56,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:56,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:43:56,850 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) [2024-11-12 20:43:56,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:56,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:43:56,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:43:58,948 INFO L124 PetriNetUnfolderBase]: 10730/23943 cut-off events. [2024-11-12 20:43:58,948 INFO L125 PetriNetUnfolderBase]: For 72240/73717 co-relation queries the response was YES. [2024-11-12 20:43:59,031 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. [2024-11-12 20:43:59,099 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 118 selfloop transitions, 13 changer transitions 0/170 dead transitions. [2024-11-12 20:43:59,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1325 flow [2024-11-12 20:43:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:43:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:43:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-12 20:43:59,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-11-12 20:43:59,100 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 687 flow. Second operand 4 states and 291 transitions. [2024-11-12 20:43:59,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1325 flow [2024-11-12 20:43:59,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 170 transitions, 1312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:43:59,482 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 690 flow [2024-11-12 20:43:59,483 INFO L262 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} [2024-11-12 20:43:59,483 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-11-12 20:43:59,483 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 690 flow [2024-11-12 20:43:59,483 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) [2024-11-12 20:43:59,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:43:59,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:43:59,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 20:43:59,484 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:43:59,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:43:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2047970264, now seen corresponding path program 1 times [2024-11-12 20:43:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:43:59,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120674315] [2024-11-12 20:43:59,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:43:59,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:43:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:43:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:43:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:43:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120674315] [2024-11-12 20:43:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120674315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:43:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:43:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:43:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982809751] [2024-11-12 20:43:59,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:43:59,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:43:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:43:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:43:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:43:59,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-11-12 20:43:59,538 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) [2024-11-12 20:43:59,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:43:59,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-11-12 20:43:59,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:01,412 INFO L124 PetriNetUnfolderBase]: 9053/22609 cut-off events. [2024-11-12 20:44:01,412 INFO L125 PetriNetUnfolderBase]: For 70083/71691 co-relation queries the response was YES. [2024-11-12 20:44:01,503 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. [2024-11-12 20:44:01,576 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 98 selfloop transitions, 11 changer transitions 0/149 dead transitions. [2024-11-12 20:44:01,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 149 transitions, 1247 flow [2024-11-12 20:44:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-11-12 20:44:01,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-12 20:44:01,577 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 690 flow. Second operand 4 states and 280 transitions. [2024-11-12 20:44:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 149 transitions, 1247 flow [2024-11-12 20:44:02,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 1214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:02,028 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 691 flow [2024-11-12 20:44:02,028 INFO L262 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} [2024-11-12 20:44:02,029 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-11-12 20:44:02,029 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 691 flow [2024-11-12 20:44:02,029 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) [2024-11-12 20:44:02,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:02,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:02,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-12 20:44:02,029 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:02,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1171459115, now seen corresponding path program 1 times [2024-11-12 20:44:02,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:02,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439051573] [2024-11-12 20:44:02,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:02,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439051573] [2024-11-12 20:44:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439051573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:44:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690598850] [2024-11-12 20:44:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:02,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:02,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-11-12 20:44:02,219 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) [2024-11-12 20:44:02,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:02,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-11-12 20:44:02,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:04,741 INFO L124 PetriNetUnfolderBase]: 14645/27221 cut-off events. [2024-11-12 20:44:04,742 INFO L125 PetriNetUnfolderBase]: For 93376/96343 co-relation queries the response was YES. [2024-11-12 20:44:04,849 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. [2024-11-12 20:44:04,935 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 216 selfloop transitions, 16 changer transitions 0/265 dead transitions. [2024-11-12 20:44:04,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2461 flow [2024-11-12 20:44:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:44:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:44:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2024-11-12 20:44:04,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2024-11-12 20:44:04,936 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 691 flow. Second operand 7 states and 458 transitions. [2024-11-12 20:44:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2461 flow [2024-11-12 20:44:05,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:44:05,293 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 699 flow [2024-11-12 20:44:05,293 INFO L262 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} [2024-11-12 20:44:05,293 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-11-12 20:44:05,293 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 699 flow [2024-11-12 20:44:05,294 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) [2024-11-12 20:44:05,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:05,294 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:05,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 20:44:05,294 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:05,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1661355095, now seen corresponding path program 1 times [2024-11-12 20:44:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:05,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19936657] [2024-11-12 20:44:05,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19936657] [2024-11-12 20:44:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19936657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:05,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:05,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909432693] [2024-11-12 20:44:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:05,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:44:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:44:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:44:05,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-11-12 20:44:05,349 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) [2024-11-12 20:44:05,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:05,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-11-12 20:44:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:07,477 INFO L124 PetriNetUnfolderBase]: 9053/21545 cut-off events. [2024-11-12 20:44:07,477 INFO L125 PetriNetUnfolderBase]: For 76939/78547 co-relation queries the response was YES. [2024-11-12 20:44:07,552 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. [2024-11-12 20:44:07,618 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 99 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2024-11-12 20:44:07,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 147 transitions, 1238 flow [2024-11-12 20:44:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-11-12 20:44:07,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-12 20:44:07,619 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 699 flow. Second operand 4 states and 276 transitions. [2024-11-12 20:44:07,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 147 transitions, 1238 flow [2024-11-12 20:44:07,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 147 transitions, 1211 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:44:07,873 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 686 flow [2024-11-12 20:44:07,873 INFO L262 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} [2024-11-12 20:44:07,874 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-11-12 20:44:07,874 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 686 flow [2024-11-12 20:44:07,875 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) [2024-11-12 20:44:07,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:07,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:07,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 20:44:07,875 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:07,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1955493359, now seen corresponding path program 1 times [2024-11-12 20:44:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389430181] [2024-11-12 20:44:07,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:07,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389430181] [2024-11-12 20:44:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389430181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:44:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660446100] [2024-11-12 20:44:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:08,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:44:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:44:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:44:08,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-11-12 20:44:08,107 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) [2024-11-12 20:44:08,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:08,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-11-12 20:44:08,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:10,427 INFO L124 PetriNetUnfolderBase]: 13247/25025 cut-off events. [2024-11-12 20:44:10,427 INFO L125 PetriNetUnfolderBase]: For 95516/98155 co-relation queries the response was YES. [2024-11-12 20:44:10,535 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. [2024-11-12 20:44:10,625 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 288 selfloop transitions, 22 changer transitions 0/342 dead transitions. [2024-11-12 20:44:10,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 342 transitions, 3268 flow [2024-11-12 20:44:10,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:44:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:44:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 534 transitions. [2024-11-12 20:44:10,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-11-12 20:44:10,627 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 686 flow. Second operand 9 states and 534 transitions. [2024-11-12 20:44:10,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 342 transitions, 3268 flow [2024-11-12 20:44:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 342 transitions, 3246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:44:10,985 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 716 flow [2024-11-12 20:44:10,985 INFO L262 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} [2024-11-12 20:44:10,986 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-11-12 20:44:10,986 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 716 flow [2024-11-12 20:44:10,986 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) [2024-11-12 20:44:10,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:10,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:10,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 20:44:10,987 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:10,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1003443739, now seen corresponding path program 1 times [2024-11-12 20:44:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847005457] [2024-11-12 20:44:10,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847005457] [2024-11-12 20:44:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847005457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86140604] [2024-11-12 20:44:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:11,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:44:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:44:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:44:11,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:44:11,057 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) [2024-11-12 20:44:11,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:11,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:44:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:13,130 INFO L124 PetriNetUnfolderBase]: 10784/22859 cut-off events. [2024-11-12 20:44:13,130 INFO L125 PetriNetUnfolderBase]: For 91610/93566 co-relation queries the response was YES. [2024-11-12 20:44:13,207 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. [2024-11-12 20:44:13,272 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 143 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2024-11-12 20:44:13,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 186 transitions, 1667 flow [2024-11-12 20:44:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-11-12 20:44:13,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-11-12 20:44:13,273 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 716 flow. Second operand 4 states and 289 transitions. [2024-11-12 20:44:13,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 186 transitions, 1667 flow [2024-11-12 20:44:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 1623 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-12 20:44:13,640 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 679 flow [2024-11-12 20:44:13,640 INFO L262 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} [2024-11-12 20:44:13,640 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-11-12 20:44:13,640 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 679 flow [2024-11-12 20:44:13,640 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) [2024-11-12 20:44:13,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:13,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:13,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-12 20:44:13,641 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:13,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash -490751145, now seen corresponding path program 1 times [2024-11-12 20:44:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189009019] [2024-11-12 20:44:13,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189009019] [2024-11-12 20:44:13,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189009019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:13,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:13,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:13,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573967638] [2024-11-12 20:44:13,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:13,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:44:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:44:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:44:13,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-11-12 20:44:13,690 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) [2024-11-12 20:44:13,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:13,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-11-12 20:44:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:17,682 INFO L124 PetriNetUnfolderBase]: 18272/40809 cut-off events. [2024-11-12 20:44:17,682 INFO L125 PetriNetUnfolderBase]: For 142611/146230 co-relation queries the response was YES. [2024-11-12 20:44:17,918 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. [2024-11-12 20:44:18,045 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-11-12 20:44:18,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 211 transitions, 1889 flow [2024-11-12 20:44:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2024-11-12 20:44:18,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2024-11-12 20:44:18,047 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 679 flow. Second operand 4 states and 315 transitions. [2024-11-12 20:44:18,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 211 transitions, 1889 flow [2024-11-12 20:44:18,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 211 transitions, 1864 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:18,526 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 799 flow [2024-11-12 20:44:18,526 INFO L262 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} [2024-11-12 20:44:18,527 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-11-12 20:44:18,527 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 799 flow [2024-11-12 20:44:18,527 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) [2024-11-12 20:44:18,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:18,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:18,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-12 20:44:18,528 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:18,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1922004360, now seen corresponding path program 1 times [2024-11-12 20:44:18,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:18,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348513884] [2024-11-12 20:44:18,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:18,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:18,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348513884] [2024-11-12 20:44:18,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348513884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:18,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:18,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:44:18,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671075702] [2024-11-12 20:44:18,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:18,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:44:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:44:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:44:18,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-11-12 20:44:18,603 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) [2024-11-12 20:44:18,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:18,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-11-12 20:44:18,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:23,466 INFO L124 PetriNetUnfolderBase]: 24826/46794 cut-off events. [2024-11-12 20:44:23,466 INFO L125 PetriNetUnfolderBase]: For 186459/190839 co-relation queries the response was YES. [2024-11-12 20:44:23,643 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. [2024-11-12 20:44:23,776 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 226 selfloop transitions, 15 changer transitions 0/273 dead transitions. [2024-11-12 20:44:23,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 273 transitions, 2605 flow [2024-11-12 20:44:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:44:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:44:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-11-12 20:44:23,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-11-12 20:44:23,777 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 799 flow. Second operand 6 states and 424 transitions. [2024-11-12 20:44:23,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 273 transitions, 2605 flow [2024-11-12 20:44:24,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 273 transitions, 2576 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:24,529 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 830 flow [2024-11-12 20:44:24,530 INFO L262 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} [2024-11-12 20:44:24,530 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2024-11-12 20:44:24,530 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 830 flow [2024-11-12 20:44:24,530 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) [2024-11-12 20:44:24,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:24,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:24,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-12 20:44:24,531 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:24,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1111849536, now seen corresponding path program 1 times [2024-11-12 20:44:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447193479] [2024-11-12 20:44:24,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:24,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447193479] [2024-11-12 20:44:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447193479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:24,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107147244] [2024-11-12 20:44:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:44:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:44:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:44:24,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-11-12 20:44:24,593 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) [2024-11-12 20:44:24,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:24,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-11-12 20:44:24,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:29,221 INFO L124 PetriNetUnfolderBase]: 24330/46983 cut-off events. [2024-11-12 20:44:29,221 INFO L125 PetriNetUnfolderBase]: For 233802/238475 co-relation queries the response was YES. [2024-11-12 20:44:29,527 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. [2024-11-12 20:44:29,686 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 156 selfloop transitions, 10 changer transitions 0/200 dead transitions. [2024-11-12 20:44:29,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 1922 flow [2024-11-12 20:44:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:44:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:44:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-12 20:44:29,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-11-12 20:44:29,687 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 830 flow. Second operand 4 states and 287 transitions. [2024-11-12 20:44:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 1922 flow [2024-11-12 20:44:30,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 200 transitions, 1800 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-12 20:44:30,984 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 863 flow [2024-11-12 20:44:30,984 INFO L262 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} [2024-11-12 20:44:30,985 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-11-12 20:44:30,985 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 863 flow [2024-11-12 20:44:30,985 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) [2024-11-12 20:44:30,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:30,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:30,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-12 20:44:30,986 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-12 20:44:30,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash 65941779, now seen corresponding path program 1 times [2024-11-12 20:44:30,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:30,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988086962] [2024-11-12 20:44:30,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:30,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988086962] [2024-11-12 20:44:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988086962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468939439] [2024-11-12 20:44:31,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:31,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:31,063 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) [2024-11-12 20:44:31,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:44:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:31,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:44:31,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:31,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:44:31,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468939439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:44:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:44:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342680691] [2024-11-12 20:44:31,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:31,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:44:31,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:31,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:44:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:44:31,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-11-12 20:44:31,282 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) [2024-11-12 20:44:31,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:31,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-11-12 20:44:31,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand