./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 023d838f 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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:22,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:22,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:22,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:22,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:22,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:22,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:22,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:22,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:22,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:22,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:22,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:22,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:22,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:22,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:22,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:22,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:22,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:22,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:22,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:22,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:22,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:22,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:22,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:22,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:22,150 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:22,150 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:22,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:22,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:22,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:22,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:22,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:22,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:22,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:22,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:22,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:22,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:22,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:22,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:22,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:22,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:22,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:22,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:22,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:22,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-10 22:23:22,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:22,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:22,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:22,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:22,507 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:22,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-10 22:23:23,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:24,220 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:24,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-10 22:23:24,236 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ac8a034/8d0390fbbb194842b188ccad3e8ef4a2/FLAG77dd1b52f [2024-11-10 22:23:24,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ac8a034/8d0390fbbb194842b188ccad3e8ef4a2 [2024-11-10 22:23:24,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:24,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:24,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:24,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:24,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:24,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f361d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24, skipping insertion in model container [2024-11-10 22:23:24,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:24,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:24,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:24,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:24,578 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:24,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24 WrapperNode [2024-11-10 22:23:24,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:24,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:24,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:24,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:24,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,622 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 220 [2024-11-10 22:23:24,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:24,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:24,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:24,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:24,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,661 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]. [2024-11-10 22:23:24,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,667 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:24,677 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:24,677 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:24,677 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:24,678 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:24,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:24,708 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) [2024-11-10 22:23:24,710 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 [2024-11-10 22:23:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:24,755 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:23:24,850 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:24,852 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:25,369 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:25,370 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:25,548 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:25,549 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:25,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:25 BoogieIcfgContainer [2024-11-10 22:23:25,549 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:25,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:25,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:25,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:25,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:24" (1/3) ... [2024-11-10 22:23:25,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55b448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:25, skipping insertion in model container [2024-11-10 22:23:25,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24" (2/3) ... [2024-11-10 22:23:25,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55b448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:25, skipping insertion in model container [2024-11-10 22:23:25,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:25" (3/3) ... [2024-11-10 22:23:25,561 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-10 22:23:25,577 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:25,577 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-11-10 22:23:25,577 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:25,644 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:23:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 102 transitions, 218 flow [2024-11-10 22:23:25,722 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-10 22:23:25,722 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:23:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 12/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 353 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2024-11-10 22:23:25,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 102 transitions, 218 flow [2024-11-10 22:23:25,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 205 flow [2024-11-10 22:23:25,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:25,751 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;@22676677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:25,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-11-10 22:23:25,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:25,759 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-10 22:23:25,759 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:23:25,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:25,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:25,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:25,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash -131886156, now seen corresponding path program 1 times [2024-11-10 22:23:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969249364] [2024-11-10 22:23:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969249364] [2024-11-10 22:23:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969249364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:26,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:26,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246179514] [2024-11-10 22:23:26,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:26,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:26,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:26,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:26,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:26,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:26,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:26,639 INFO L124 PetriNetUnfolderBase]: 1138/2365 cut-off events. [2024-11-10 22:23:26,639 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-10 22:23:26,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 2365 events. 1138/2365 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16710 event pairs, 431 based on Foata normal form. 129/2007 useless extension candidates. Maximal degree in co-relation 4067. Up to 1051 conditions per place. [2024-11-10 22:23:26,671 INFO L140 encePairwiseOnDemand]: 92/102 looper letters, 72 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-10 22:23:26,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 435 flow [2024-11-10 22:23:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2024-11-10 22:23:26,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2024-11-10 22:23:26,687 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 205 flow. Second operand 4 states and 316 transitions. [2024-11-10 22:23:26,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 435 flow [2024-11-10 22:23:26,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 133 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:26,697 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 230 flow [2024-11-10 22:23:26,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-11-10 22:23:26,705 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2024-11-10 22:23:26,705 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 230 flow [2024-11-10 22:23:26,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:26,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:26,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:26,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:23:26,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:26,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash 206497081, now seen corresponding path program 1 times [2024-11-10 22:23:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796173269] [2024-11-10 22:23:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796173269] [2024-11-10 22:23:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796173269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026762156] [2024-11-10 22:23:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:26,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:26,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:26,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 102 [2024-11-10 22:23:26,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:26,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:26,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 102 [2024-11-10 22:23:26,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:27,182 INFO L124 PetriNetUnfolderBase]: 923/2097 cut-off events. [2024-11-10 22:23:27,182 INFO L125 PetriNetUnfolderBase]: For 382/386 co-relation queries the response was YES. [2024-11-10 22:23:27,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 2097 events. 923/2097 cut-off events. For 382/386 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15007 event pairs, 316 based on Foata normal form. 4/1759 useless extension candidates. Maximal degree in co-relation 2241. Up to 746 conditions per place. [2024-11-10 22:23:27,202 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 50 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-10 22:23:27,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 114 transitions, 372 flow [2024-11-10 22:23:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-11-10 22:23:27,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7279411764705882 [2024-11-10 22:23:27,206 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 230 flow. Second operand 4 states and 297 transitions. [2024-11-10 22:23:27,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 114 transitions, 372 flow [2024-11-10 22:23:27,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 114 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:27,219 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 236 flow [2024-11-10 22:23:27,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2024-11-10 22:23:27,220 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2024-11-10 22:23:27,221 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 236 flow [2024-11-10 22:23:27,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:27,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:27,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:23:27,222 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:27,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2106412088, now seen corresponding path program 1 times [2024-11-10 22:23:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:27,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048746309] [2024-11-10 22:23:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:27,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:27,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048746309] [2024-11-10 22:23:27,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048746309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:27,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:27,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:27,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436260843] [2024-11-10 22:23:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:27,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:27,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:27,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:27,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-10 22:23:27,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:27,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-10 22:23:27,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:27,673 INFO L124 PetriNetUnfolderBase]: 927/2075 cut-off events. [2024-11-10 22:23:27,674 INFO L125 PetriNetUnfolderBase]: For 704/708 co-relation queries the response was YES. [2024-11-10 22:23:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 2075 events. 927/2075 cut-off events. For 704/708 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14571 event pairs, 316 based on Foata normal form. 34/1767 useless extension candidates. Maximal degree in co-relation 2313. Up to 746 conditions per place. [2024-11-10 22:23:27,691 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 51 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-11-10 22:23:27,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 113 transitions, 378 flow [2024-11-10 22:23:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2024-11-10 22:23:27,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181372549019608 [2024-11-10 22:23:27,694 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 236 flow. Second operand 4 states and 293 transitions. [2024-11-10 22:23:27,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 113 transitions, 378 flow [2024-11-10 22:23:27,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 370 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:27,701 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 232 flow [2024-11-10 22:23:27,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-11-10 22:23:27,703 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2024-11-10 22:23:27,704 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 232 flow [2024-11-10 22:23:27,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:27,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:27,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:23:27,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:27,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1437275404, now seen corresponding path program 1 times [2024-11-10 22:23:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:27,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915475937] [2024-11-10 22:23:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915475937] [2024-11-10 22:23:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915475937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139974757] [2024-11-10 22:23:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:27,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:27,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-10 22:23:27,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:27,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-10 22:23:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:28,121 INFO L124 PetriNetUnfolderBase]: 905/2071 cut-off events. [2024-11-10 22:23:28,121 INFO L125 PetriNetUnfolderBase]: For 579/605 co-relation queries the response was YES. [2024-11-10 22:23:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 2071 events. 905/2071 cut-off events. For 579/605 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 15018 event pairs, 362 based on Foata normal form. 92/1727 useless extension candidates. Maximal degree in co-relation 1975. Up to 852 conditions per place. [2024-11-10 22:23:28,136 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 53 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-10 22:23:28,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 112 transitions, 401 flow [2024-11-10 22:23:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-11-10 22:23:28,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2024-11-10 22:23:28,138 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 232 flow. Second operand 4 states and 294 transitions. [2024-11-10 22:23:28,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 112 transitions, 401 flow [2024-11-10 22:23:28,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 112 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:28,144 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 226 flow [2024-11-10 22:23:28,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-10 22:23:28,145 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2024-11-10 22:23:28,146 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 226 flow [2024-11-10 22:23:28,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:28,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:28,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:23:28,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:28,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash 874264923, now seen corresponding path program 1 times [2024-11-10 22:23:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935532708] [2024-11-10 22:23:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:28,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:28,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935532708] [2024-11-10 22:23:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935532708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:28,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789825594] [2024-11-10 22:23:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:28,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:28,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 102 [2024-11-10 22:23:28,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:28,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 102 [2024-11-10 22:23:28,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:28,644 INFO L124 PetriNetUnfolderBase]: 1179/2305 cut-off events. [2024-11-10 22:23:28,644 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-11-10 22:23:28,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2305 events. 1179/2305 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 15333 event pairs, 300 based on Foata normal form. 0/2025 useless extension candidates. Maximal degree in co-relation 2883. Up to 768 conditions per place. [2024-11-10 22:23:28,659 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 68 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-11-10 22:23:28,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 452 flow [2024-11-10 22:23:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-11-10 22:23:28,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2024-11-10 22:23:28,661 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 226 flow. Second operand 5 states and 369 transitions. [2024-11-10 22:23:28,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 452 flow [2024-11-10 22:23:28,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 438 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:28,666 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 230 flow [2024-11-10 22:23:28,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=230, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-11-10 22:23:28,667 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2024-11-10 22:23:28,667 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 230 flow [2024-11-10 22:23:28,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:28,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:28,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:23:28,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:28,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 874265916, now seen corresponding path program 1 times [2024-11-10 22:23:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978879703] [2024-11-10 22:23:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:28,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978879703] [2024-11-10 22:23:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978879703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839274450] [2024-11-10 22:23:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:28,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:28,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:28,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:28,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 230 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) [2024-11-10 22:23:28,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:28,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:29,021 INFO L124 PetriNetUnfolderBase]: 985/2118 cut-off events. [2024-11-10 22:23:29,022 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2024-11-10 22:23:29,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 2118 events. 985/2118 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 14754 event pairs, 452 based on Foata normal form. 30/1834 useless extension candidates. Maximal degree in co-relation 1567. Up to 1063 conditions per place. [2024-11-10 22:23:29,037 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 70 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-10 22:23:29,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 446 flow [2024-11-10 22:23:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-11-10 22:23:29,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7524509803921569 [2024-11-10 22:23:29,040 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 230 flow. Second operand 4 states and 307 transitions. [2024-11-10 22:23:29,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 446 flow [2024-11-10 22:23:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 434 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:29,047 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 220 flow [2024-11-10 22:23:29,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=220, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2024-11-10 22:23:29,049 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 0 predicate places. [2024-11-10 22:23:29,050 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 220 flow [2024-11-10 22:23:29,051 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) [2024-11-10 22:23:29,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:29,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:29,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:23:29,051 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:29,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1605865231, now seen corresponding path program 1 times [2024-11-10 22:23:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279605721] [2024-11-10 22:23:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279605721] [2024-11-10 22:23:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279605721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008705499] [2024-11-10 22:23:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:29,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 102 [2024-11-10 22:23:29,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:29,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 102 [2024-11-10 22:23:29,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:29,385 INFO L124 PetriNetUnfolderBase]: 790/1904 cut-off events. [2024-11-10 22:23:29,386 INFO L125 PetriNetUnfolderBase]: For 439/461 co-relation queries the response was YES. [2024-11-10 22:23:29,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 1904 events. 790/1904 cut-off events. For 439/461 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 13838 event pairs, 362 based on Foata normal form. 22/1575 useless extension candidates. Maximal degree in co-relation 1773. Up to 852 conditions per place. [2024-11-10 22:23:29,399 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 51 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-10 22:23:29,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 386 flow [2024-11-10 22:23:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2024-11-10 22:23:29,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7230392156862745 [2024-11-10 22:23:29,401 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 220 flow. Second operand 4 states and 295 transitions. [2024-11-10 22:23:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 386 flow [2024-11-10 22:23:29,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 109 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:29,404 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 218 flow [2024-11-10 22:23:29,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-11-10 22:23:29,405 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 0 predicate places. [2024-11-10 22:23:29,405 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 218 flow [2024-11-10 22:23:29,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:29,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:29,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:23:29,406 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:29,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1332409467, now seen corresponding path program 1 times [2024-11-10 22:23:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:29,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935843234] [2024-11-10 22:23:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:29,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:29,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935843234] [2024-11-10 22:23:29,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935843234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:29,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:29,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:29,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234229576] [2024-11-10 22:23:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:29,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:29,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:29,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:29,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:29,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:29,887 INFO L124 PetriNetUnfolderBase]: 1149/2224 cut-off events. [2024-11-10 22:23:29,887 INFO L125 PetriNetUnfolderBase]: For 488/492 co-relation queries the response was YES. [2024-11-10 22:23:29,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 2224 events. 1149/2224 cut-off events. For 488/492 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14663 event pairs, 296 based on Foata normal form. 64/2008 useless extension candidates. Maximal degree in co-relation 2742. Up to 746 conditions per place. [2024-11-10 22:23:29,909 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 82 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2024-11-10 22:23:29,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 520 flow [2024-11-10 22:23:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2024-11-10 22:23:29,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696078431372549 [2024-11-10 22:23:29,911 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 218 flow. Second operand 6 states and 426 transitions. [2024-11-10 22:23:29,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 520 flow [2024-11-10 22:23:29,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:29,917 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 237 flow [2024-11-10 22:23:29,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=89, 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=237, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-11-10 22:23:29,919 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2024-11-10 22:23:29,920 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 237 flow [2024-11-10 22:23:29,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:29,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:29,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:23:29,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:29,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash -726289918, now seen corresponding path program 1 times [2024-11-10 22:23:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730051173] [2024-11-10 22:23:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730051173] [2024-11-10 22:23:30,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730051173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:30,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:30,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:30,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220336615] [2024-11-10 22:23:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:30,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:30,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:30,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:30,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:30,444 INFO L124 PetriNetUnfolderBase]: 1107/2326 cut-off events. [2024-11-10 22:23:30,444 INFO L125 PetriNetUnfolderBase]: For 881/881 co-relation queries the response was YES. [2024-11-10 22:23:30,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 2326 events. 1107/2326 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 15896 event pairs, 414 based on Foata normal form. 30/2078 useless extension candidates. Maximal degree in co-relation 2418. Up to 1037 conditions per place. [2024-11-10 22:23:30,459 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 103 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2024-11-10 22:23:30,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 160 transitions, 605 flow [2024-11-10 22:23:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 448 transitions. [2024-11-10 22:23:30,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2024-11-10 22:23:30,461 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 237 flow. Second operand 6 states and 448 transitions. [2024-11-10 22:23:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 160 transitions, 605 flow [2024-11-10 22:23:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 160 transitions, 587 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:30,469 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 248 flow [2024-11-10 22:23:30,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-10 22:23:30,470 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2024-11-10 22:23:30,470 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 248 flow [2024-11-10 22:23:30,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:30,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:30,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:23:30,471 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:30,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1342294897, now seen corresponding path program 1 times [2024-11-10 22:23:30,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:30,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381581341] [2024-11-10 22:23:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381581341] [2024-11-10 22:23:30,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381581341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:30,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:30,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062472275] [2024-11-10 22:23:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:30,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:30,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 102 [2024-11-10 22:23:30,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:30,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 102 [2024-11-10 22:23:30,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:30,861 INFO L124 PetriNetUnfolderBase]: 1076/2118 cut-off events. [2024-11-10 22:23:30,862 INFO L125 PetriNetUnfolderBase]: For 1924/2006 co-relation queries the response was YES. [2024-11-10 22:23:30,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4498 conditions, 2118 events. 1076/2118 cut-off events. For 1924/2006 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13992 event pairs, 363 based on Foata normal form. 82/1868 useless extension candidates. Maximal degree in co-relation 3340. Up to 854 conditions per place. [2024-11-10 22:23:30,875 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 78 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2024-11-10 22:23:30,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 578 flow [2024-11-10 22:23:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2024-11-10 22:23:30,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7196078431372549 [2024-11-10 22:23:30,877 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 248 flow. Second operand 5 states and 367 transitions. [2024-11-10 22:23:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 578 flow [2024-11-10 22:23:30,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 538 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:30,882 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 247 flow [2024-11-10 22:23:30,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-10 22:23:30,883 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2024-11-10 22:23:30,883 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 247 flow [2024-11-10 22:23:30,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:30,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:30,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:23:30,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:30,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1342295890, now seen corresponding path program 1 times [2024-11-10 22:23:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174118709] [2024-11-10 22:23:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174118709] [2024-11-10 22:23:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174118709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:30,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:30,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199931925] [2024-11-10 22:23:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:30,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:30,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:31,210 INFO L124 PetriNetUnfolderBase]: 1166/2443 cut-off events. [2024-11-10 22:23:31,210 INFO L125 PetriNetUnfolderBase]: For 1401/1487 co-relation queries the response was YES. [2024-11-10 22:23:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5033 conditions, 2443 events. 1166/2443 cut-off events. For 1401/1487 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17377 event pairs, 551 based on Foata normal form. 86/2197 useless extension candidates. Maximal degree in co-relation 3789. Up to 1248 conditions per place. [2024-11-10 22:23:31,227 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 80 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-11-10 22:23:31,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 135 transitions, 565 flow [2024-11-10 22:23:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2024-11-10 22:23:31,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-10 22:23:31,229 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 247 flow. Second operand 4 states and 306 transitions. [2024-11-10 22:23:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 135 transitions, 565 flow [2024-11-10 22:23:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 135 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:31,234 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 267 flow [2024-11-10 22:23:31,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-11-10 22:23:31,235 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-10 22:23:31,235 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 267 flow [2024-11-10 22:23:31,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:31,236 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:31,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:23:31,236 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:31,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:31,237 INFO L85 PathProgramCache]: Analyzing trace with hash 545265791, now seen corresponding path program 1 times [2024-11-10 22:23:31,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:31,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869995965] [2024-11-10 22:23:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:31,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869995965] [2024-11-10 22:23:31,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869995965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:31,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:31,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134988179] [2024-11-10 22:23:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:31,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:31,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:31,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-10 22:23:31,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:31,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-10 22:23:31,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:31,548 INFO L124 PetriNetUnfolderBase]: 1070/2327 cut-off events. [2024-11-10 22:23:31,548 INFO L125 PetriNetUnfolderBase]: For 1538/1626 co-relation queries the response was YES. [2024-11-10 22:23:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2327 events. 1070/2327 cut-off events. For 1538/1626 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16549 event pairs, 468 based on Foata normal form. 148/2078 useless extension candidates. Maximal degree in co-relation 3724. Up to 1023 conditions per place. [2024-11-10 22:23:31,563 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 59 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-10 22:23:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 455 flow [2024-11-10 22:23:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2024-11-10 22:23:31,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7230392156862745 [2024-11-10 22:23:31,565 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 267 flow. Second operand 4 states and 295 transitions. [2024-11-10 22:23:31,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 455 flow [2024-11-10 22:23:31,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:31,570 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 268 flow [2024-11-10 22:23:31,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, 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=268, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-11-10 22:23:31,572 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-10 22:23:31,573 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 268 flow [2024-11-10 22:23:31,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:31,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:31,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:23:31,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:31,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1338530477, now seen corresponding path program 1 times [2024-11-10 22:23:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509363258] [2024-11-10 22:23:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509363258] [2024-11-10 22:23:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509363258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252213760] [2024-11-10 22:23:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:31,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:31,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:31,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:31,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:31,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,103 INFO L124 PetriNetUnfolderBase]: 1337/2575 cut-off events. [2024-11-10 22:23:32,104 INFO L125 PetriNetUnfolderBase]: For 2122/2228 co-relation queries the response was YES. [2024-11-10 22:23:32,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 2575 events. 1337/2575 cut-off events. For 2122/2228 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17357 event pairs, 363 based on Foata normal form. 172/2450 useless extension candidates. Maximal degree in co-relation 4387. Up to 887 conditions per place. [2024-11-10 22:23:32,122 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 96 selfloop transitions, 9 changer transitions 0/152 dead transitions. [2024-11-10 22:23:32,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 706 flow [2024-11-10 22:23:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2024-11-10 22:23:32,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-11-10 22:23:32,124 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 268 flow. Second operand 6 states and 423 transitions. [2024-11-10 22:23:32,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 706 flow [2024-11-10 22:23:32,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 680 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:32,130 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 285 flow [2024-11-10 22:23:32,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-11-10 22:23:32,132 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2024-11-10 22:23:32,132 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 285 flow [2024-11-10 22:23:32,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:23:32,133 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:32,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash -276629024, now seen corresponding path program 1 times [2024-11-10 22:23:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220960938] [2024-11-10 22:23:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220960938] [2024-11-10 22:23:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220960938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480392923] [2024-11-10 22:23:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:32,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 102 [2024-11-10 22:23:32,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 102 [2024-11-10 22:23:32,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,416 INFO L124 PetriNetUnfolderBase]: 966/2173 cut-off events. [2024-11-10 22:23:32,416 INFO L125 PetriNetUnfolderBase]: For 1998/2099 co-relation queries the response was YES. [2024-11-10 22:23:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 2173 events. 966/2173 cut-off events. For 1998/2099 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15539 event pairs, 478 based on Foata normal form. 93/1966 useless extension candidates. Maximal degree in co-relation 3623. Up to 1051 conditions per place. [2024-11-10 22:23:32,431 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 59 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-10 22:23:32,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 112 transitions, 492 flow [2024-11-10 22:23:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-10 22:23:32,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-10 22:23:32,433 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 285 flow. Second operand 4 states and 296 transitions. [2024-11-10 22:23:32,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 112 transitions, 492 flow [2024-11-10 22:23:32,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 470 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:32,440 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 278 flow [2024-11-10 22:23:32,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=95, 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=278, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-11-10 22:23:32,441 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-10 22:23:32,441 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 278 flow [2024-11-10 22:23:32,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:23:32,442 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:32,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1921049512, now seen corresponding path program 1 times [2024-11-10 22:23:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095784291] [2024-11-10 22:23:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095784291] [2024-11-10 22:23:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095784291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574071334] [2024-11-10 22:23:32,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:32,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:32,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:32,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,805 INFO L124 PetriNetUnfolderBase]: 1337/2543 cut-off events. [2024-11-10 22:23:32,806 INFO L125 PetriNetUnfolderBase]: For 2391/2496 co-relation queries the response was YES. [2024-11-10 22:23:32,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 2543 events. 1337/2543 cut-off events. For 2391/2496 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17165 event pairs, 551 based on Foata normal form. 138/2404 useless extension candidates. Maximal degree in co-relation 4545. Up to 1281 conditions per place. [2024-11-10 22:23:32,823 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 80 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-11-10 22:23:32,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 600 flow [2024-11-10 22:23:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-10 22:23:32,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7426470588235294 [2024-11-10 22:23:32,825 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 278 flow. Second operand 4 states and 303 transitions. [2024-11-10 22:23:32,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 600 flow [2024-11-10 22:23:32,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 580 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:32,833 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 284 flow [2024-11-10 22:23:32,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-11-10 22:23:32,834 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-10 22:23:32,834 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 284 flow [2024-11-10 22:23:32,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:23:32,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:32,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2132543209, now seen corresponding path program 1 times [2024-11-10 22:23:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655205788] [2024-11-10 22:23:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655205788] [2024-11-10 22:23:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655205788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:32,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446490025] [2024-11-10 22:23:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:32,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:32,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 284 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) [2024-11-10 22:23:32,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:32,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:33,244 INFO L124 PetriNetUnfolderBase]: 1573/3106 cut-off events. [2024-11-10 22:23:33,244 INFO L125 PetriNetUnfolderBase]: For 2730/2856 co-relation queries the response was YES. [2024-11-10 22:23:33,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 3106 events. 1573/3106 cut-off events. For 2730/2856 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22329 event pairs, 720 based on Foata normal form. 192/2883 useless extension candidates. Maximal degree in co-relation 5443. Up to 1564 conditions per place. [2024-11-10 22:23:33,263 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 85 selfloop transitions, 7 changer transitions 0/134 dead transitions. [2024-11-10 22:23:33,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 614 flow [2024-11-10 22:23:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2024-11-10 22:23:33,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7598039215686274 [2024-11-10 22:23:33,264 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 284 flow. Second operand 4 states and 310 transitions. [2024-11-10 22:23:33,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 614 flow [2024-11-10 22:23:33,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:33,272 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 322 flow [2024-11-10 22:23:33,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-11-10 22:23:33,273 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 9 predicate places. [2024-11-10 22:23:33,273 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 322 flow [2024-11-10 22:23:33,274 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) [2024-11-10 22:23:33,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:33,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:33,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:23:33,274 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:33,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 446546562, now seen corresponding path program 1 times [2024-11-10 22:23:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337680285] [2024-11-10 22:23:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:33,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337680285] [2024-11-10 22:23:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337680285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415082124] [2024-11-10 22:23:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:33,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:23:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:23:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:23:33,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:33,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:33,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:33,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:34,089 INFO L124 PetriNetUnfolderBase]: 1768/3309 cut-off events. [2024-11-10 22:23:34,089 INFO L125 PetriNetUnfolderBase]: For 3566/3758 co-relation queries the response was YES. [2024-11-10 22:23:34,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8614 conditions, 3309 events. 1768/3309 cut-off events. For 3566/3758 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22277 event pairs, 202 based on Foata normal form. 155/3252 useless extension candidates. Maximal degree in co-relation 7212. Up to 912 conditions per place. [2024-11-10 22:23:34,114 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 140 selfloop transitions, 9 changer transitions 0/189 dead transitions. [2024-11-10 22:23:34,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 189 transitions, 1088 flow [2024-11-10 22:23:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:23:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:23:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 490 transitions. [2024-11-10 22:23:34,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-10 22:23:34,117 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 322 flow. Second operand 7 states and 490 transitions. [2024-11-10 22:23:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 189 transitions, 1088 flow [2024-11-10 22:23:34,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 189 transitions, 1088 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:34,131 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 346 flow [2024-11-10 22:23:34,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-11-10 22:23:34,132 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2024-11-10 22:23:34,132 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 346 flow [2024-11-10 22:23:34,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:34,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:34,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:34,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:23:34,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:34,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 446547555, now seen corresponding path program 1 times [2024-11-10 22:23:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679409315] [2024-11-10 22:23:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:34,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679409315] [2024-11-10 22:23:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679409315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:34,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:34,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:34,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765868135] [2024-11-10 22:23:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:34,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:34,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:34,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:34,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:34,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:34,567 INFO L124 PetriNetUnfolderBase]: 1593/3460 cut-off events. [2024-11-10 22:23:34,567 INFO L125 PetriNetUnfolderBase]: For 4873/5050 co-relation queries the response was YES. [2024-11-10 22:23:34,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 3460 events. 1593/3460 cut-off events. For 4873/5050 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 26226 event pairs, 814 based on Foata normal form. 162/3235 useless extension candidates. Maximal degree in co-relation 6894. Up to 1730 conditions per place. [2024-11-10 22:23:34,597 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 94 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2024-11-10 22:23:34,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 144 transitions, 788 flow [2024-11-10 22:23:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2024-11-10 22:23:34,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7549019607843137 [2024-11-10 22:23:34,661 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 346 flow. Second operand 4 states and 308 transitions. [2024-11-10 22:23:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 144 transitions, 788 flow [2024-11-10 22:23:34,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 144 transitions, 772 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:34,672 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 362 flow [2024-11-10 22:23:34,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-11-10 22:23:34,673 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2024-11-10 22:23:34,673 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 362 flow [2024-11-10 22:23:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:34,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:34,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:34,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 22:23:34,674 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:34,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1684329354, now seen corresponding path program 1 times [2024-11-10 22:23:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409434245] [2024-11-10 22:23:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409434245] [2024-11-10 22:23:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409434245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:34,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928396250] [2024-11-10 22:23:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:34,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:34,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:34,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:34,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:34,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:35,497 INFO L124 PetriNetUnfolderBase]: 2552/5422 cut-off events. [2024-11-10 22:23:35,497 INFO L125 PetriNetUnfolderBase]: For 6876/7178 co-relation queries the response was YES. [2024-11-10 22:23:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13455 conditions, 5422 events. 2552/5422 cut-off events. For 6876/7178 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 44388 event pairs, 633 based on Foata normal form. 334/5205 useless extension candidates. Maximal degree in co-relation 10678. Up to 1492 conditions per place. [2024-11-10 22:23:35,535 INFO L140 encePairwiseOnDemand]: 92/102 looper letters, 165 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-11-10 22:23:35,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 220 transitions, 1283 flow [2024-11-10 22:23:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:23:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:23:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2024-11-10 22:23:35,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7128851540616247 [2024-11-10 22:23:35,537 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 362 flow. Second operand 7 states and 509 transitions. [2024-11-10 22:23:35,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 220 transitions, 1283 flow [2024-11-10 22:23:35,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:35,562 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 433 flow [2024-11-10 22:23:35,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-11-10 22:23:35,563 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 22 predicate places. [2024-11-10 22:23:35,563 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 433 flow [2024-11-10 22:23:35,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:35,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:35,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:35,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 22:23:35,564 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:35,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 958042182, now seen corresponding path program 1 times [2024-11-10 22:23:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099044331] [2024-11-10 22:23:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099044331] [2024-11-10 22:23:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099044331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 22:23:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116790767] [2024-11-10 22:23:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:35,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 22:23:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 22:23:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:23:35,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 102 [2024-11-10 22:23:35,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 433 flow. Second operand has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:35,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:35,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 102 [2024-11-10 22:23:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:36,650 INFO L124 PetriNetUnfolderBase]: 2838/5424 cut-off events. [2024-11-10 22:23:36,650 INFO L125 PetriNetUnfolderBase]: For 10308/10702 co-relation queries the response was YES. [2024-11-10 22:23:36,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15319 conditions, 5424 events. 2838/5424 cut-off events. For 10308/10702 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 40336 event pairs, 289 based on Foata normal form. 378/5553 useless extension candidates. Maximal degree in co-relation 13165. Up to 821 conditions per place. [2024-11-10 22:23:36,698 INFO L140 encePairwiseOnDemand]: 90/102 looper letters, 211 selfloop transitions, 16 changer transitions 0/268 dead transitions. [2024-11-10 22:23:36,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 1937 flow [2024-11-10 22:23:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:23:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:23:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 576 transitions. [2024-11-10 22:23:36,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-11-10 22:23:36,701 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 433 flow. Second operand 9 states and 576 transitions. [2024-11-10 22:23:36,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 1937 flow [2024-11-10 22:23:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 268 transitions, 1872 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:36,734 INFO L231 Difference]: Finished difference. Result has 121 places, 100 transitions, 461 flow [2024-11-10 22:23:36,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=461, PETRI_PLACES=121, PETRI_TRANSITIONS=100} [2024-11-10 22:23:36,735 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 28 predicate places. [2024-11-10 22:23:36,735 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 100 transitions, 461 flow [2024-11-10 22:23:36,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:36,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:36,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:36,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 22:23:36,736 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:36,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash -674632485, now seen corresponding path program 1 times [2024-11-10 22:23:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627882985] [2024-11-10 22:23:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:36,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627882985] [2024-11-10 22:23:36,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627882985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:36,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949740433] [2024-11-10 22:23:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:36,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:36,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:36,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 100 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:36,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:36,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:36,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:37,760 INFO L124 PetriNetUnfolderBase]: 3786/8727 cut-off events. [2024-11-10 22:23:37,761 INFO L125 PetriNetUnfolderBase]: For 18744/19446 co-relation queries the response was YES. [2024-11-10 22:23:37,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23158 conditions, 8727 events. 3786/8727 cut-off events. For 18744/19446 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 81779 event pairs, 1327 based on Foata normal form. 648/8617 useless extension candidates. Maximal degree in co-relation 18571. Up to 3017 conditions per place. [2024-11-10 22:23:37,931 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 160 selfloop transitions, 13 changer transitions 0/213 dead transitions. [2024-11-10 22:23:37,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 213 transitions, 1436 flow [2024-11-10 22:23:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2024-11-10 22:23:37,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7565359477124183 [2024-11-10 22:23:37,934 INFO L175 Difference]: Start difference. First operand has 121 places, 100 transitions, 461 flow. Second operand 6 states and 463 transitions. [2024-11-10 22:23:37,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 213 transitions, 1436 flow [2024-11-10 22:23:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 213 transitions, 1333 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-10 22:23:38,007 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 571 flow [2024-11-10 22:23:38,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-11-10 22:23:38,008 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 29 predicate places. [2024-11-10 22:23:38,008 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 571 flow [2024-11-10 22:23:38,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:38,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:38,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:38,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 22:23:38,009 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:38,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 553226153, now seen corresponding path program 1 times [2024-11-10 22:23:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:38,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16927001] [2024-11-10 22:23:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:38,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16927001] [2024-11-10 22:23:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16927001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:38,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:38,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814621833] [2024-11-10 22:23:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:38,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:38,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:38,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:38,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 571 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:38,899 INFO L124 PetriNetUnfolderBase]: 3989/8686 cut-off events. [2024-11-10 22:23:38,899 INFO L125 PetriNetUnfolderBase]: For 20213/20673 co-relation queries the response was YES. [2024-11-10 22:23:38,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23915 conditions, 8686 events. 3989/8686 cut-off events. For 20213/20673 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 78739 event pairs, 1881 based on Foata normal form. 502/8421 useless extension candidates. Maximal degree in co-relation 19855. Up to 3977 conditions per place. [2024-11-10 22:23:38,957 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 191 selfloop transitions, 9 changer transitions 0/245 dead transitions. [2024-11-10 22:23:38,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 245 transitions, 2019 flow [2024-11-10 22:23:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 448 transitions. [2024-11-10 22:23:38,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2024-11-10 22:23:38,959 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 571 flow. Second operand 6 states and 448 transitions. [2024-11-10 22:23:38,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 245 transitions, 2019 flow [2024-11-10 22:23:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 245 transitions, 2002 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:39,039 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 588 flow [2024-11-10 22:23:39,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2024-11-10 22:23:39,040 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2024-11-10 22:23:39,040 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 588 flow [2024-11-10 22:23:39,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:39,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:39,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:39,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 22:23:39,041 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:39,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -365462717, now seen corresponding path program 1 times [2024-11-10 22:23:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:39,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457440290] [2024-11-10 22:23:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457440290] [2024-11-10 22:23:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457440290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327294968] [2024-11-10 22:23:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:39,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:39,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:23:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:23:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:40,390 INFO L124 PetriNetUnfolderBase]: 6393/15319 cut-off events. [2024-11-10 22:23:40,390 INFO L125 PetriNetUnfolderBase]: For 39139/40044 co-relation queries the response was YES. [2024-11-10 22:23:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42217 conditions, 15319 events. 6393/15319 cut-off events. For 39139/40044 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 149993 event pairs, 3390 based on Foata normal form. 977/14877 useless extension candidates. Maximal degree in co-relation 40631. Up to 5300 conditions per place. [2024-11-10 22:23:40,500 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 145 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2024-11-10 22:23:40,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 198 transitions, 1528 flow [2024-11-10 22:23:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2024-11-10 22:23:40,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2024-11-10 22:23:40,502 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 588 flow. Second operand 4 states and 333 transitions. [2024-11-10 22:23:40,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 198 transitions, 1528 flow [2024-11-10 22:23:40,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 198 transitions, 1509 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:40,729 INFO L231 Difference]: Finished difference. Result has 129 places, 113 transitions, 619 flow [2024-11-10 22:23:40,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=619, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2024-11-10 22:23:40,730 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 36 predicate places. [2024-11-10 22:23:40,730 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 619 flow [2024-11-10 22:23:40,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:40,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:40,730 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:40,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 22:23:40,731 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:40,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash 561229144, now seen corresponding path program 1 times [2024-11-10 22:23:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:40,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934762091] [2024-11-10 22:23:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:40,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934762091] [2024-11-10 22:23:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934762091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:40,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532706323] [2024-11-10 22:23:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:40,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:23:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:23:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:23:40,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:40,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 619 flow. Second operand has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:40,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:40,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:40,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:42,874 INFO L124 PetriNetUnfolderBase]: 10180/18604 cut-off events. [2024-11-10 22:23:42,874 INFO L125 PetriNetUnfolderBase]: For 46147/48231 co-relation queries the response was YES. [2024-11-10 22:23:42,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56364 conditions, 18604 events. 10180/18604 cut-off events. For 46147/48231 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 155266 event pairs, 402 based on Foata normal form. 1784/19673 useless extension candidates. Maximal degree in co-relation 44832. Up to 8498 conditions per place. [2024-11-10 22:23:43,011 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 162 selfloop transitions, 20 changer transitions 0/224 dead transitions. [2024-11-10 22:23:43,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 224 transitions, 1593 flow [2024-11-10 22:23:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:23:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:23:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2024-11-10 22:23:43,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.680672268907563 [2024-11-10 22:23:43,013 INFO L175 Difference]: Start difference. First operand has 129 places, 113 transitions, 619 flow. Second operand 7 states and 486 transitions. [2024-11-10 22:23:43,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 224 transitions, 1593 flow [2024-11-10 22:23:43,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 224 transitions, 1578 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:43,218 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 654 flow [2024-11-10 22:23:43,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=654, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-11-10 22:23:43,218 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 40 predicate places. [2024-11-10 22:23:43,218 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 654 flow [2024-11-10 22:23:43,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:43,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:43,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:43,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 22:23:43,219 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:43,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1370538980, now seen corresponding path program 1 times [2024-11-10 22:23:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146103730] [2024-11-10 22:23:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:43,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:43,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146103730] [2024-11-10 22:23:43,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146103730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:43,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:43,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:43,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066583580] [2024-11-10 22:23:43,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:43,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:43,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 102 [2024-11-10 22:23:43,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:43,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:43,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 102 [2024-11-10 22:23:43,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:44,904 INFO L124 PetriNetUnfolderBase]: 6308/14329 cut-off events. [2024-11-10 22:23:44,905 INFO L125 PetriNetUnfolderBase]: For 47114/48293 co-relation queries the response was YES. [2024-11-10 22:23:44,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42177 conditions, 14329 events. 6308/14329 cut-off events. For 47114/48293 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 135808 event pairs, 1412 based on Foata normal form. 1142/14610 useless extension candidates. Maximal degree in co-relation 33751. Up to 5838 conditions per place. [2024-11-10 22:23:44,996 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 78 selfloop transitions, 15 changer transitions 0/138 dead transitions. [2024-11-10 22:23:44,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 138 transitions, 977 flow [2024-11-10 22:23:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-10 22:23:44,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-10 22:23:44,998 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 654 flow. Second operand 4 states and 296 transitions. [2024-11-10 22:23:44,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 138 transitions, 977 flow [2024-11-10 22:23:45,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 943 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:45,170 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 637 flow [2024-11-10 22:23:45,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=637, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-11-10 22:23:45,170 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 37 predicate places. [2024-11-10 22:23:45,171 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 637 flow [2024-11-10 22:23:45,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:45,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:45,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:45,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 22:23:45,172 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:45,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:45,172 INFO L85 PathProgramCache]: Analyzing trace with hash -271461483, now seen corresponding path program 1 times [2024-11-10 22:23:45,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749637563] [2024-11-10 22:23:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:45,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749637563] [2024-11-10 22:23:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749637563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:45,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:45,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:45,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248882438] [2024-11-10 22:23:45,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:45,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:45,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-10 22:23:45,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:45,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:45,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-10 22:23:45,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:46,353 INFO L124 PetriNetUnfolderBase]: 6308/14191 cut-off events. [2024-11-10 22:23:46,354 INFO L125 PetriNetUnfolderBase]: For 47071/48250 co-relation queries the response was YES. [2024-11-10 22:23:46,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41254 conditions, 14191 events. 6308/14191 cut-off events. For 47071/48250 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 133307 event pairs, 1412 based on Foata normal form. 1142/14472 useless extension candidates. Maximal degree in co-relation 32986. Up to 5976 conditions per place. [2024-11-10 22:23:46,480 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 80 selfloop transitions, 15 changer transitions 0/136 dead transitions. [2024-11-10 22:23:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 136 transitions, 960 flow [2024-11-10 22:23:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2024-11-10 22:23:46,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-10 22:23:46,481 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 637 flow. Second operand 4 states and 292 transitions. [2024-11-10 22:23:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 136 transitions, 960 flow [2024-11-10 22:23:46,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 930 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:46,810 INFO L231 Difference]: Finished difference. Result has 129 places, 108 transitions, 620 flow [2024-11-10 22:23:46,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=129, PETRI_TRANSITIONS=108} [2024-11-10 22:23:46,811 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 36 predicate places. [2024-11-10 22:23:46,811 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 108 transitions, 620 flow [2024-11-10 22:23:46,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:46,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:46,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:46,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 22:23:46,812 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:46,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash 218234974, now seen corresponding path program 1 times [2024-11-10 22:23:46,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:46,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442784843] [2024-11-10 22:23:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:46,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:46,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442784843] [2024-11-10 22:23:46,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442784843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:46,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:46,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 22:23:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98449327] [2024-11-10 22:23:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:46,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 22:23:46,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 22:23:46,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:23:47,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 102 [2024-11-10 22:23:47,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 108 transitions, 620 flow. Second operand has 9 states, 9 states have (on average 49.55555555555556) internal successors, (446), 9 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:47,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:47,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 102 [2024-11-10 22:23:47,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:48,909 INFO L124 PetriNetUnfolderBase]: 8970/16530 cut-off events. [2024-11-10 22:23:48,909 INFO L125 PetriNetUnfolderBase]: For 54378/56193 co-relation queries the response was YES. [2024-11-10 22:23:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51147 conditions, 16530 events. 8970/16530 cut-off events. For 54378/56193 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 136352 event pairs, 402 based on Foata normal form. 2242/18067 useless extension candidates. Maximal degree in co-relation 40689. Up to 4076 conditions per place. [2024-11-10 22:23:49,057 INFO L140 encePairwiseOnDemand]: 90/102 looper letters, 212 selfloop transitions, 28 changer transitions 0/276 dead transitions. [2024-11-10 22:23:49,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 276 transitions, 2000 flow [2024-11-10 22:23:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:23:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:23:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 570 transitions. [2024-11-10 22:23:49,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2024-11-10 22:23:49,059 INFO L175 Difference]: Start difference. First operand has 129 places, 108 transitions, 620 flow. Second operand 9 states and 570 transitions. [2024-11-10 22:23:49,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 276 transitions, 2000 flow [2024-11-10 22:23:49,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 276 transitions, 1970 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:49,336 INFO L231 Difference]: Finished difference. Result has 134 places, 108 transitions, 656 flow [2024-11-10 22:23:49,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=134, PETRI_TRANSITIONS=108} [2024-11-10 22:23:49,337 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 41 predicate places. [2024-11-10 22:23:49,337 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 108 transitions, 656 flow [2024-11-10 22:23:49,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.55555555555556) internal successors, (446), 9 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:49,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:49,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:49,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 22:23:49,338 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:49,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1824649639, now seen corresponding path program 1 times [2024-11-10 22:23:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:49,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534507148] [2024-11-10 22:23:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534507148] [2024-11-10 22:23:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534507148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:49,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667453982] [2024-11-10 22:23:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:49,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:49,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:23:49,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 108 transitions, 656 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:49,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:49,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:23:49,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:52,079 INFO L124 PetriNetUnfolderBase]: 12598/27132 cut-off events. [2024-11-10 22:23:52,080 INFO L125 PetriNetUnfolderBase]: For 100890/103285 co-relation queries the response was YES. [2024-11-10 22:23:52,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88165 conditions, 27132 events. 12598/27132 cut-off events. For 100890/103285 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 263286 event pairs, 4644 based on Foata normal form. 2113/28739 useless extension candidates. Maximal degree in co-relation 70716. Up to 9725 conditions per place. [2024-11-10 22:23:52,404 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 140 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2024-11-10 22:23:52,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 195 transitions, 1567 flow [2024-11-10 22:23:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-11-10 22:23:52,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8112745098039216 [2024-11-10 22:23:52,405 INFO L175 Difference]: Start difference. First operand has 134 places, 108 transitions, 656 flow. Second operand 4 states and 331 transitions. [2024-11-10 22:23:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 195 transitions, 1567 flow [2024-11-10 22:23:52,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 195 transitions, 1480 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-10 22:23:52,799 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 793 flow [2024-11-10 22:23:52,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=793, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-11-10 22:23:52,799 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 39 predicate places. [2024-11-10 22:23:52,799 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 793 flow [2024-11-10 22:23:52,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:52,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:52,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:52,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 22:23:52,800 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:52,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1466068831, now seen corresponding path program 1 times [2024-11-10 22:23:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:52,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352171333] [2024-11-10 22:23:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352171333] [2024-11-10 22:23:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352171333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:52,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947179870] [2024-11-10 22:23:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:52,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:52,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:52,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:52,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 793 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) [2024-11-10 22:23:52,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:55,879 INFO L124 PetriNetUnfolderBase]: 14500/28899 cut-off events. [2024-11-10 22:23:55,879 INFO L125 PetriNetUnfolderBase]: For 103121/105981 co-relation queries the response was YES. [2024-11-10 22:23:56,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92047 conditions, 28899 events. 14500/28899 cut-off events. For 103121/105981 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 268770 event pairs, 5452 based on Foata normal form. 2692/31061 useless extension candidates. Maximal degree in co-relation 73412. Up to 11728 conditions per place. [2024-11-10 22:23:56,253 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 119 selfloop transitions, 18 changer transitions 0/175 dead transitions. [2024-11-10 22:23:56,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 175 transitions, 1346 flow [2024-11-10 22:23:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-11-10 22:23:56,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7475490196078431 [2024-11-10 22:23:56,255 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 793 flow. Second operand 4 states and 305 transitions. [2024-11-10 22:23:56,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 175 transitions, 1346 flow [2024-11-10 22:23:56,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 175 transitions, 1330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:56,652 INFO L231 Difference]: Finished difference. Result has 133 places, 118 transitions, 788 flow [2024-11-10 22:23:56,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=788, PETRI_PLACES=133, PETRI_TRANSITIONS=118} [2024-11-10 22:23:56,653 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 40 predicate places. [2024-11-10 22:23:56,653 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 118 transitions, 788 flow [2024-11-10 22:23:56,653 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) [2024-11-10 22:23:56,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:56,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:56,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 22:23:56,654 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:56,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1060630373, now seen corresponding path program 1 times [2024-11-10 22:23:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:56,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409655624] [2024-11-10 22:23:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409655624] [2024-11-10 22:23:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409655624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846630366] [2024-11-10 22:23:56,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:56,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:56,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-11-10 22:23:56,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 118 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:56,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:56,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-11-10 22:23:56,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:59,069 INFO L124 PetriNetUnfolderBase]: 16436/31515 cut-off events. [2024-11-10 22:23:59,069 INFO L125 PetriNetUnfolderBase]: For 119747/123036 co-relation queries the response was YES. [2024-11-10 22:23:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102248 conditions, 31515 events. 16436/31515 cut-off events. For 119747/123036 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 286701 event pairs, 5856 based on Foata normal form. 3062/34347 useless extension candidates. Maximal degree in co-relation 81718. Up to 12764 conditions per place. [2024-11-10 22:23:59,434 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 126 selfloop transitions, 12 changer transitions 0/176 dead transitions. [2024-11-10 22:23:59,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 176 transitions, 1407 flow [2024-11-10 22:23:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-10 22:23:59,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7426470588235294 [2024-11-10 22:23:59,435 INFO L175 Difference]: Start difference. First operand has 133 places, 118 transitions, 788 flow. Second operand 4 states and 303 transitions. [2024-11-10 22:23:59,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 176 transitions, 1407 flow [2024-11-10 22:23:59,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1339 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:59,863 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 804 flow [2024-11-10 22:23:59,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=804, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-11-10 22:23:59,864 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 37 predicate places. [2024-11-10 22:23:59,864 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 804 flow [2024-11-10 22:23:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:59,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:59,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:59,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-10 22:23:59,864 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:23:59,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash -413146425, now seen corresponding path program 1 times [2024-11-10 22:23:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565085454] [2024-11-10 22:23:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:59,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565085454] [2024-11-10 22:23:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565085454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270890140] [2024-11-10 22:23:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:59,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:59,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:59,930 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) [2024-11-10 22:23:59,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:24:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:00,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:00,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:00,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270890140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:00,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:24:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568569720] [2024-11-10 22:24:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:00,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:24:00,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:24:00,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:00,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:00,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:24:00,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:02,423 INFO L124 PetriNetUnfolderBase]: 12882/27601 cut-off events. [2024-11-10 22:24:02,423 INFO L125 PetriNetUnfolderBase]: For 93575/95625 co-relation queries the response was YES. [2024-11-10 22:24:02,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90980 conditions, 27601 events. 12882/27601 cut-off events. For 93575/95625 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 264047 event pairs, 448 based on Foata normal form. 2104/29501 useless extension candidates. Maximal degree in co-relation 87656. Up to 8228 conditions per place. [2024-11-10 22:24:02,783 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 293 selfloop transitions, 9 changer transitions 0/340 dead transitions. [2024-11-10 22:24:02,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 340 transitions, 3541 flow [2024-11-10 22:24:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2024-11-10 22:24:02,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7990196078431373 [2024-11-10 22:24:02,785 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 804 flow. Second operand 6 states and 489 transitions. [2024-11-10 22:24:02,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 340 transitions, 3541 flow [2024-11-10 22:24:03,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 340 transitions, 3486 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:03,205 INFO L231 Difference]: Finished difference. Result has 133 places, 119 transitions, 807 flow [2024-11-10 22:24:03,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=133, PETRI_TRANSITIONS=119} [2024-11-10 22:24:03,206 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 40 predicate places. [2024-11-10 22:24:03,206 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 119 transitions, 807 flow [2024-11-10 22:24:03,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:03,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:03,207 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:24:03,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:24:03,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:03,408 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:24:03,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash 77363365, now seen corresponding path program 1 times [2024-11-10 22:24:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963244935] [2024-11-10 22:24:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963244935] [2024-11-10 22:24:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963244935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636719018] [2024-11-10 22:24:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:03,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:03,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:03,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:24:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:03,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:03,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636719018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:03,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:03,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:24:03,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28743100] [2024-11-10 22:24:03,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:03,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:03,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:03,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:24:03,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 119 transitions, 807 flow. Second operand has 12 states, 12 states have (on average 65.75) internal successors, (789), 12 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:03,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:03,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:24:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:11,788 INFO L124 PetriNetUnfolderBase]: 30876/66235 cut-off events. [2024-11-10 22:24:11,789 INFO L125 PetriNetUnfolderBase]: For 231394/236510 co-relation queries the response was YES. [2024-11-10 22:24:12,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215848 conditions, 66235 events. 30876/66235 cut-off events. For 231394/236510 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 663253 event pairs, 7051 based on Foata normal form. 5448/71407 useless extension candidates. Maximal degree in co-relation 213167. Up to 11162 conditions per place. [2024-11-10 22:24:12,553 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 552 selfloop transitions, 17 changer transitions 0/607 dead transitions. [2024-11-10 22:24:12,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 607 transitions, 6409 flow [2024-11-10 22:24:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 846 transitions. [2024-11-10 22:24:12,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8294117647058824 [2024-11-10 22:24:12,555 INFO L175 Difference]: Start difference. First operand has 133 places, 119 transitions, 807 flow. Second operand 10 states and 846 transitions. [2024-11-10 22:24:12,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 607 transitions, 6409 flow [2024-11-10 22:24:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 607 transitions, 6368 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-10 22:24:14,244 INFO L231 Difference]: Finished difference. Result has 141 places, 131 transitions, 907 flow [2024-11-10 22:24:14,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=141, PETRI_TRANSITIONS=131} [2024-11-10 22:24:14,245 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 48 predicate places. [2024-11-10 22:24:14,245 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 131 transitions, 907 flow [2024-11-10 22:24:14,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.75) internal successors, (789), 12 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:14,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:14,245 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:14,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:14,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-10 22:24:14,446 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:24:14,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2047510563, now seen corresponding path program 1 times [2024-11-10 22:24:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:14,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808945757] [2024-11-10 22:24:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:14,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:14,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808945757] [2024-11-10 22:24:14,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808945757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:14,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425895636] [2024-11-10 22:24:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:14,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:14,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:14,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:14,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:24:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:14,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:14,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:14,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425895636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:14,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:14,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:24:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643458177] [2024-11-10 22:24:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:14,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:14,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:14,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:14,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:24:14,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:24:14,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 131 transitions, 907 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:14,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:14,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:24:14,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:22,465 INFO L124 PetriNetUnfolderBase]: 30853/67359 cut-off events. [2024-11-10 22:24:22,465 INFO L125 PetriNetUnfolderBase]: For 248655/254236 co-relation queries the response was YES. [2024-11-10 22:24:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214594 conditions, 67359 events. 30853/67359 cut-off events. For 248655/254236 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 692046 event pairs, 488 based on Foata normal form. 5565/72669 useless extension candidates. Maximal degree in co-relation 170891. Up to 19945 conditions per place. [2024-11-10 22:24:23,235 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 243 selfloop transitions, 29 changer transitions 0/309 dead transitions. [2024-11-10 22:24:23,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 309 transitions, 2642 flow [2024-11-10 22:24:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 485 transitions. [2024-11-10 22:24:23,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7924836601307189 [2024-11-10 22:24:23,237 INFO L175 Difference]: Start difference. First operand has 141 places, 131 transitions, 907 flow. Second operand 6 states and 485 transitions. [2024-11-10 22:24:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 309 transitions, 2642 flow [2024-11-10 22:24:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 309 transitions, 2577 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:26,146 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 948 flow [2024-11-10 22:24:26,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=948, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2024-11-10 22:24:26,146 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 50 predicate places. [2024-11-10 22:24:26,147 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 948 flow [2024-11-10 22:24:26,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:26,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:26,147 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:26,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:26,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:26,348 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-11-10 22:24:26,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 951682685, now seen corresponding path program 1 times [2024-11-10 22:24:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033618381] [2024-11-10 22:24:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:26,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:26,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033618381] [2024-11-10 22:24:26,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033618381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991039622] [2024-11-10 22:24:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:26,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:26,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:24:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:26,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:26,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:26,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991039622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:26,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:24:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63268645] [2024-11-10 22:24:26,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:26,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:26,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-11-10 22:24:26,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 948 flow. Second operand has 12 states, 12 states have (on average 65.91666666666667) internal successors, (791), 12 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:26,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:26,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-11-10 22:24:26,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand