./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i -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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:50:11,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:50:11,687 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:50:11,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:50:11,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:50:11,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:50:11,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:50:11,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:50:11,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:50:11,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:50:11,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:50:11,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:50:11,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:50:11,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:50:11,735 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:50:11,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:50:11,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:50:11,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:50:11,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:50:11,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:50:11,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:50:11,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:50:11,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:50:11,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:50:11,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:50:11,741 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:50:11,741 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:50:11,744 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:50:11,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:50:11,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:50:11,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:50:11,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:50:11,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:50:11,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:50:11,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:50:11,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:50:11,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:50:11,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:50:11,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:50:11,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:50:11,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:50:11,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:50:11,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:50:11,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:50:11,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2024-11-12 20:50:11,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:50:12,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:50:12,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:50:12,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:50:12,024 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:50:12,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-12 20:50:13,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:50:13,735 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:50:13,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-12 20:50:13,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87721e52b/ca09a714ab01419da7bc184e61243880/FLAGf7c6f0605 [2024-11-12 20:50:14,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87721e52b/ca09a714ab01419da7bc184e61243880 [2024-11-12 20:50:14,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:50:14,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:50:14,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:50:14,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:50:14,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:50:14,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776d5b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14, skipping insertion in model container [2024-11-12 20:50:14,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:50:14,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:50:14,413 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:50:14,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:50:14,491 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:50:14,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14 WrapperNode [2024-11-12 20:50:14,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:50:14,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:50:14,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:50:14,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:50:14,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,531 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2024-11-12 20:50:14,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:50:14,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:50:14,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:50:14,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:50:14,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,556 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 20:50:14,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:50:14,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:50:14,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:50:14,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:50:14,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (1/1) ... [2024-11-12 20:50:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:50:14,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:14,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:50:14,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:50:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:50:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-12 20:50:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-12 20:50:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-12 20:50:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-12 20:50:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:50:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:50:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:50:14,644 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:50:14,752 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:50:14,754 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:50:14,902 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:50:14,903 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:50:15,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:50:15,051 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:50:15,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:50:15 BoogieIcfgContainer [2024-11-12 20:50:15,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:50:15,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:50:15,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:50:15,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:50:15,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:50:14" (1/3) ... [2024-11-12 20:50:15,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7138ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:50:15, skipping insertion in model container [2024-11-12 20:50:15,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:50:14" (2/3) ... [2024-11-12 20:50:15,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7138ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:50:15, skipping insertion in model container [2024-11-12 20:50:15,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:50:15" (3/3) ... [2024-11-12 20:50:15,061 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2024-11-12 20:50:15,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:50:15,091 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 20:50:15,091 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:50:15,135 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:50:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2024-11-12 20:50:15,199 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-12 20:50:15,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:50:15,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-12 20:50:15,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2024-11-12 20:50:15,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2024-11-12 20:50:15,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:50:15,226 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;@1cd0c324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:50:15,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-12 20:50:15,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:50:15,232 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:50:15,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:50:15,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:15,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:15,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-12 20:50:15,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2088991192, now seen corresponding path program 1 times [2024-11-12 20:50:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331692787] [2024-11-12 20:50:15,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:15,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331692787] [2024-11-12 20:50:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331692787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:15,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:50:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875104595] [2024-11-12 20:50:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:15,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:50:15,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-11-12 20:50:15,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:15,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:15,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-11-12 20:50:15,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:15,958 INFO L124 PetriNetUnfolderBase]: 122/284 cut-off events. [2024-11-12 20:50:15,958 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:50:15,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 284 events. 122/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1284 event pairs, 27 based on Foata normal form. 22/266 useless extension candidates. Maximal degree in co-relation 471. Up to 92 conditions per place. [2024-11-12 20:50:15,969 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 50 selfloop transitions, 12 changer transitions 2/72 dead transitions. [2024-11-12 20:50:15,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 288 flow [2024-11-12 20:50:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:50:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:50:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-11-12 20:50:15,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2024-11-12 20:50:15,983 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 9 states and 151 transitions. [2024-11-12 20:50:15,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 288 flow [2024-11-12 20:50:15,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:15,988 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 142 flow [2024-11-12 20:50:15,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-12 20:50:15,995 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-12 20:50:15,995 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 142 flow [2024-11-12 20:50:15,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:15,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:15,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:15,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:50:15,996 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-12 20:50:15,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash -334217248, now seen corresponding path program 1 times [2024-11-12 20:50:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582897693] [2024-11-12 20:50:15,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582897693] [2024-11-12 20:50:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582897693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020780528] [2024-11-12 20:50:16,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:50:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:50:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:50:16,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-12 20:50:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-12 20:50:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:16,276 INFO L124 PetriNetUnfolderBase]: 83/221 cut-off events. [2024-11-12 20:50:16,277 INFO L125 PetriNetUnfolderBase]: For 90/93 co-relation queries the response was YES. [2024-11-12 20:50:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 221 events. 83/221 cut-off events. For 90/93 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 922 event pairs, 12 based on Foata normal form. 30/233 useless extension candidates. Maximal degree in co-relation 419. Up to 84 conditions per place. [2024-11-12 20:50:16,281 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 38 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-11-12 20:50:16,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 279 flow [2024-11-12 20:50:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:50:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:50:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-12 20:50:16,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-11-12 20:50:16,285 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 142 flow. Second operand 5 states and 106 transitions. [2024-11-12 20:50:16,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 279 flow [2024-11-12 20:50:16,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:16,290 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 132 flow [2024-11-12 20:50:16,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2024-11-12 20:50:16,292 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-12 20:50:16,292 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 132 flow [2024-11-12 20:50:16,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:16,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:16,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:50:16,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-12 20:50:16,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -333227225, now seen corresponding path program 1 times [2024-11-12 20:50:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56326594] [2024-11-12 20:50:16,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56326594] [2024-11-12 20:50:16,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56326594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:16,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993961523] [2024-11-12 20:50:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:16,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-12 20:50:16,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:16,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-12 20:50:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:16,470 INFO L124 PetriNetUnfolderBase]: 87/252 cut-off events. [2024-11-12 20:50:16,471 INFO L125 PetriNetUnfolderBase]: For 99/102 co-relation queries the response was YES. [2024-11-12 20:50:16,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 252 events. 87/252 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1261 event pairs, 37 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 462. Up to 131 conditions per place. [2024-11-12 20:50:16,475 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-12 20:50:16,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 218 flow [2024-11-12 20:50:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-12 20:50:16,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-12 20:50:16,477 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 132 flow. Second operand 4 states and 91 transitions. [2024-11-12 20:50:16,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 218 flow [2024-11-12 20:50:16,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:16,479 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 146 flow [2024-11-12 20:50:16,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-11-12 20:50:16,480 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-12 20:50:16,480 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 146 flow [2024-11-12 20:50:16,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:16,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:16,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:50:16,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-12 20:50:16,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash -333227192, now seen corresponding path program 1 times [2024-11-12 20:50:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860863099] [2024-11-12 20:50:16,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860863099] [2024-11-12 20:50:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860863099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:16,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:50:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474136246] [2024-11-12 20:50:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:16,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:16,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-12 20:50:16,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:16,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-12 20:50:16,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:16,573 INFO L124 PetriNetUnfolderBase]: 69/207 cut-off events. [2024-11-12 20:50:16,573 INFO L125 PetriNetUnfolderBase]: For 64/65 co-relation queries the response was YES. [2024-11-12 20:50:16,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 207 events. 69/207 cut-off events. For 64/65 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 932 event pairs, 42 based on Foata normal form. 20/218 useless extension candidates. Maximal degree in co-relation 387. Up to 143 conditions per place. [2024-11-12 20:50:16,575 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 19 selfloop transitions, 1 changer transitions 2/35 dead transitions. [2024-11-12 20:50:16,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 179 flow [2024-11-12 20:50:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-12 20:50:16,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-12 20:50:16,579 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 146 flow. Second operand 3 states and 63 transitions. [2024-11-12 20:50:16,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 179 flow [2024-11-12 20:50:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:16,581 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 131 flow [2024-11-12 20:50:16,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-12 20:50:16,583 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-12 20:50:16,583 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 131 flow [2024-11-12 20:50:16,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:16,585 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:16,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:50:16,585 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-12 20:50:16,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash 933878462, now seen corresponding path program 1 times [2024-11-12 20:50:16,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199704725] [2024-11-12 20:50:16,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:50:16,624 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:50:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:50:16,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:50:16,671 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:50:16,672 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-12 20:50:16,673 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-12 20:50:16,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-11-12 20:50:16,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-12 20:50:16,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-12 20:50:16,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-12 20:50:16,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-12 20:50:16,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-12 20:50:16,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-12 20:50:16,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-12 20:50:16,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:50:16,679 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-12 20:50:16,681 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:50:16,681 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:50:16,732 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:50:16,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2024-11-12 20:50:16,741 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2024-11-12 20:50:16,743 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:50:16,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 245 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2024-11-12 20:50:16,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2024-11-12 20:50:16,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2024-11-12 20:50:16,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:50:16,746 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;@1cd0c324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:50:16,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-12 20:50:16,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:50:16,748 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:50:16,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:50:16,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:16,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:16,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:16,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash -727996086, now seen corresponding path program 1 times [2024-11-12 20:50:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577137771] [2024-11-12 20:50:16,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577137771] [2024-11-12 20:50:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577137771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:50:16,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679861089] [2024-11-12 20:50:16,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:16,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:16,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-12 20:50:16,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:16,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-12 20:50:16,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:16,867 INFO L124 PetriNetUnfolderBase]: 304/714 cut-off events. [2024-11-12 20:50:16,868 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-12 20:50:16,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 714 events. 304/714 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4523 event pairs, 150 based on Foata normal form. 3/596 useless extension candidates. Maximal degree in co-relation 389. Up to 507 conditions per place. [2024-11-12 20:50:16,872 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 24 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-12 20:50:16,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 159 flow [2024-11-12 20:50:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-12 20:50:16,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2024-11-12 20:50:16,874 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 3 states and 107 transitions. [2024-11-12 20:50:16,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 159 flow [2024-11-12 20:50:16,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:16,877 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 113 flow [2024-11-12 20:50:16,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-12 20:50:16,879 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-12 20:50:16,879 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 113 flow [2024-11-12 20:50:16,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:16,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:16,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:16,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:50:16,881 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:16,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash -727995889, now seen corresponding path program 1 times [2024-11-12 20:50:16,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658028280] [2024-11-12 20:50:16,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:16,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:16,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658028280] [2024-11-12 20:50:16,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658028280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:16,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:16,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:50:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780237517] [2024-11-12 20:50:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:16,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:50:17,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-12 20:50:17,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:17,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-12 20:50:17,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:17,344 INFO L124 PetriNetUnfolderBase]: 1348/2355 cut-off events. [2024-11-12 20:50:17,345 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-12 20:50:17,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4754 conditions, 2355 events. 1348/2355 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13649 event pairs, 233 based on Foata normal form. 103/2242 useless extension candidates. Maximal degree in co-relation 2418. Up to 576 conditions per place. [2024-11-12 20:50:17,357 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 106 selfloop transitions, 17 changer transitions 1/136 dead transitions. [2024-11-12 20:50:17,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 136 transitions, 607 flow [2024-11-12 20:50:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:50:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:50:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-12 20:50:17,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584905660377358 [2024-11-12 20:50:17,360 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 113 flow. Second operand 10 states and 296 transitions. [2024-11-12 20:50:17,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 136 transitions, 607 flow [2024-11-12 20:50:17,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 136 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:17,363 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 221 flow [2024-11-12 20:50:17,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=221, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-12 20:50:17,364 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2024-11-12 20:50:17,365 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 221 flow [2024-11-12 20:50:17,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:17,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:17,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:50:17,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:17,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:17,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008997, now seen corresponding path program 1 times [2024-11-12 20:50:17,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288724426] [2024-11-12 20:50:17,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:17,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:17,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288724426] [2024-11-12 20:50:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288724426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:17,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:17,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955892453] [2024-11-12 20:50:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:17,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:17,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:17,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-12 20:50:17,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:17,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-12 20:50:17,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:17,642 INFO L124 PetriNetUnfolderBase]: 887/2153 cut-off events. [2024-11-12 20:50:17,642 INFO L125 PetriNetUnfolderBase]: For 594/619 co-relation queries the response was YES. [2024-11-12 20:50:17,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 2153 events. 887/2153 cut-off events. For 594/619 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16980 event pairs, 505 based on Foata normal form. 44/1872 useless extension candidates. Maximal degree in co-relation 4157. Up to 989 conditions per place. [2024-11-12 20:50:17,656 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 40 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-12 20:50:17,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 349 flow [2024-11-12 20:50:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-12 20:50:17,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2024-11-12 20:50:17,657 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 221 flow. Second operand 4 states and 144 transitions. [2024-11-12 20:50:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 349 flow [2024-11-12 20:50:17,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:50:17,667 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 243 flow [2024-11-12 20:50:17,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-12 20:50:17,669 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2024-11-12 20:50:17,669 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 243 flow [2024-11-12 20:50:17,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:17,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:17,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:50:17,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:17,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:17,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008964, now seen corresponding path program 1 times [2024-11-12 20:50:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402390922] [2024-11-12 20:50:17,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402390922] [2024-11-12 20:50:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402390922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:50:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577942579] [2024-11-12 20:50:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:17,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:17,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-12 20:50:17,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:17,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-12 20:50:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:17,949 INFO L124 PetriNetUnfolderBase]: 847/2085 cut-off events. [2024-11-12 20:50:17,949 INFO L125 PetriNetUnfolderBase]: For 1133/1200 co-relation queries the response was YES. [2024-11-12 20:50:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 2085 events. 847/2085 cut-off events. For 1133/1200 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16165 event pairs, 726 based on Foata normal form. 104/1965 useless extension candidates. Maximal degree in co-relation 3759. Up to 1385 conditions per place. [2024-11-12 20:50:17,962 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 28 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-11-12 20:50:17,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 291 flow [2024-11-12 20:50:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-12 20:50:17,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-11-12 20:50:17,963 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 243 flow. Second operand 3 states and 95 transitions. [2024-11-12 20:50:17,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 291 flow [2024-11-12 20:50:17,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 55 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:17,973 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 229 flow [2024-11-12 20:50:17,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-11-12 20:50:17,975 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-12 20:50:17,975 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 229 flow [2024-11-12 20:50:17,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:17,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:17,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:17,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:50:17,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:17,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1093035762, now seen corresponding path program 1 times [2024-11-12 20:50:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559905741] [2024-11-12 20:50:17,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:18,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559905741] [2024-11-12 20:50:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559905741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:18,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:18,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:18,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320237723] [2024-11-12 20:50:18,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:18,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:50:18,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:50:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:50:18,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-12 20:50:18,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:18,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-12 20:50:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:18,304 INFO L124 PetriNetUnfolderBase]: 1333/2453 cut-off events. [2024-11-12 20:50:18,305 INFO L125 PetriNetUnfolderBase]: For 1793/2001 co-relation queries the response was YES. [2024-11-12 20:50:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 2453 events. 1333/2453 cut-off events. For 1793/2001 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14880 event pairs, 242 based on Foata normal form. 293/2667 useless extension candidates. Maximal degree in co-relation 5961. Up to 1153 conditions per place. [2024-11-12 20:50:18,318 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 74 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2024-11-12 20:50:18,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 540 flow [2024-11-12 20:50:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-12 20:50:18,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-11-12 20:50:18,320 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 229 flow. Second operand 6 states and 193 transitions. [2024-11-12 20:50:18,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 540 flow [2024-11-12 20:50:18,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:18,326 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 222 flow [2024-11-12 20:50:18,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2024-11-12 20:50:18,327 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-12 20:50:18,327 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 222 flow [2024-11-12 20:50:18,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:18,327 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:18,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:50:18,328 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:18,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1957397289, now seen corresponding path program 1 times [2024-11-12 20:50:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299147578] [2024-11-12 20:50:18,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:50:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:18,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299147578] [2024-11-12 20:50:18,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299147578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:18,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:18,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:50:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658693598] [2024-11-12 20:50:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:18,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:50:18,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-11-12 20:50:18,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:18,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-11-12 20:50:18,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:18,654 INFO L124 PetriNetUnfolderBase]: 1222/2175 cut-off events. [2024-11-12 20:50:18,654 INFO L125 PetriNetUnfolderBase]: For 1723/1820 co-relation queries the response was YES. [2024-11-12 20:50:18,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 2175 events. 1222/2175 cut-off events. For 1723/1820 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12743 event pairs, 344 based on Foata normal form. 3/2118 useless extension candidates. Maximal degree in co-relation 5625. Up to 1636 conditions per place. [2024-11-12 20:50:18,666 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 46 selfloop transitions, 9 changer transitions 7/76 dead transitions. [2024-11-12 20:50:18,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 427 flow [2024-11-12 20:50:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-12 20:50:18,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2024-11-12 20:50:18,668 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 222 flow. Second operand 6 states and 169 transitions. [2024-11-12 20:50:18,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 427 flow [2024-11-12 20:50:18,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 406 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-12 20:50:18,672 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 219 flow [2024-11-12 20:50:18,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-12 20:50:18,673 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-12 20:50:18,673 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 219 flow [2024-11-12 20:50:18,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:18,674 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:18,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:50:18,674 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:18,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -978287775, now seen corresponding path program 1 times [2024-11-12 20:50:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:18,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508009145] [2024-11-12 20:50:18,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:18,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508009145] [2024-11-12 20:50:18,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508009145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:18,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:18,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:50:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131397686] [2024-11-12 20:50:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:18,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:50:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:50:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:50:18,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-12 20:50:18,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:18,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:18,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-12 20:50:18,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:19,213 INFO L124 PetriNetUnfolderBase]: 1802/3202 cut-off events. [2024-11-12 20:50:19,213 INFO L125 PetriNetUnfolderBase]: For 2155/2299 co-relation queries the response was YES. [2024-11-12 20:50:19,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 3202 events. 1802/3202 cut-off events. For 2155/2299 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20240 event pairs, 194 based on Foata normal form. 100/3236 useless extension candidates. Maximal degree in co-relation 7966. Up to 908 conditions per place. [2024-11-12 20:50:19,233 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 96 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-11-12 20:50:19,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 123 transitions, 712 flow [2024-11-12 20:50:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:50:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:50:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-11-12 20:50:19,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-11-12 20:50:19,234 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 219 flow. Second operand 9 states and 252 transitions. [2024-11-12 20:50:19,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 123 transitions, 712 flow [2024-11-12 20:50:19,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 123 transitions, 670 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-12 20:50:19,242 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 266 flow [2024-11-12 20:50:19,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-11-12 20:50:19,243 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2024-11-12 20:50:19,243 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 266 flow [2024-11-12 20:50:19,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:19,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:19,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:50:19,243 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:19,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -978288196, now seen corresponding path program 1 times [2024-11-12 20:50:19,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:19,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884058443] [2024-11-12 20:50:19,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884058443] [2024-11-12 20:50:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884058443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988416711] [2024-11-12 20:50:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:19,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:19,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-12 20:50:19,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-12 20:50:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:19,477 INFO L124 PetriNetUnfolderBase]: 882/1748 cut-off events. [2024-11-12 20:50:19,478 INFO L125 PetriNetUnfolderBase]: For 669/674 co-relation queries the response was YES. [2024-11-12 20:50:19,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4081 conditions, 1748 events. 882/1748 cut-off events. For 669/674 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12108 event pairs, 470 based on Foata normal form. 21/1661 useless extension candidates. Maximal degree in co-relation 4064. Up to 1201 conditions per place. [2024-11-12 20:50:19,487 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 32 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-11-12 20:50:19,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 62 transitions, 362 flow [2024-11-12 20:50:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-12 20:50:19,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-12 20:50:19,488 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 266 flow. Second operand 4 states and 134 transitions. [2024-11-12 20:50:19,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 62 transitions, 362 flow [2024-11-12 20:50:19,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:19,491 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 264 flow [2024-11-12 20:50:19,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-11-12 20:50:19,491 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2024-11-12 20:50:19,491 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 264 flow [2024-11-12 20:50:19,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:19,492 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:19,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:50:19,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:19,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash -262162721, now seen corresponding path program 1 times [2024-11-12 20:50:19,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944729406] [2024-11-12 20:50:19,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:19,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944729406] [2024-11-12 20:50:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944729406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:19,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385313066] [2024-11-12 20:50:19,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:19,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:19,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-12 20:50:19,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:19,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-12 20:50:19,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:19,680 INFO L124 PetriNetUnfolderBase]: 856/1766 cut-off events. [2024-11-12 20:50:19,680 INFO L125 PetriNetUnfolderBase]: For 768/773 co-relation queries the response was YES. [2024-11-12 20:50:19,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 1766 events. 856/1766 cut-off events. For 768/773 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12385 event pairs, 641 based on Foata normal form. 1/1684 useless extension candidates. Maximal degree in co-relation 4090. Up to 1293 conditions per place. [2024-11-12 20:50:19,688 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 32 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-11-12 20:50:19,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 372 flow [2024-11-12 20:50:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-12 20:50:19,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-12 20:50:19,689 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 264 flow. Second operand 4 states and 135 transitions. [2024-11-12 20:50:19,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 372 flow [2024-11-12 20:50:19,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:19,693 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 278 flow [2024-11-12 20:50:19,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-11-12 20:50:19,694 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2024-11-12 20:50:19,694 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 278 flow [2024-11-12 20:50:19,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:19,694 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:19,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:50:19,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:19,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -262149629, now seen corresponding path program 1 times [2024-11-12 20:50:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689909113] [2024-11-12 20:50:19,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689909113] [2024-11-12 20:50:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689909113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:19,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:19,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30393991] [2024-11-12 20:50:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:19,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:50:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:50:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:50:19,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-12 20:50:19,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:19,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:19,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-12 20:50:19,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:20,059 INFO L124 PetriNetUnfolderBase]: 1538/2794 cut-off events. [2024-11-12 20:50:20,059 INFO L125 PetriNetUnfolderBase]: For 2928/3064 co-relation queries the response was YES. [2024-11-12 20:50:20,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 2794 events. 1538/2794 cut-off events. For 2928/3064 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17537 event pairs, 286 based on Foata normal form. 92/2862 useless extension candidates. Maximal degree in co-relation 7523. Up to 1394 conditions per place. [2024-11-12 20:50:20,070 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2024-11-12 20:50:20,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 621 flow [2024-11-12 20:50:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-12 20:50:20,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-11-12 20:50:20,072 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 278 flow. Second operand 6 states and 188 transitions. [2024-11-12 20:50:20,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 621 flow [2024-11-12 20:50:20,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 594 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:20,082 INFO L231 Difference]: Finished difference. Result has 77 places, 53 transitions, 275 flow [2024-11-12 20:50:20,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2024-11-12 20:50:20,083 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2024-11-12 20:50:20,083 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 275 flow [2024-11-12 20:50:20,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:20,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:20,084 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:20,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:50:20,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-12 20:50:20,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1464705388, now seen corresponding path program 1 times [2024-11-12 20:50:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140804801] [2024-11-12 20:50:20,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:50:20,093 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:50:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:50:20,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:50:20,101 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-11-12 20:50:20,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-11-12 20:50:20,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-11-12 20:50:20,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-11-12 20:50:20,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-11-12 20:50:20,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-11-12 20:50:20,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-11-12 20:50:20,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-11-12 20:50:20,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:50:20,105 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:20,106 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:50:20,106 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 20:50:20,135 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:50:20,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2024-11-12 20:50:20,148 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2024-11-12 20:50:20,148 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:50:20,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 103 events. 4/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-11-12 20:50:20,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2024-11-12 20:50:20,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2024-11-12 20:50:20,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:50:20,150 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;@1cd0c324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:50:20,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-12 20:50:20,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:50:20,152 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:50:20,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:50:20,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:20,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:20,152 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:20,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1794873418, now seen corresponding path program 1 times [2024-11-12 20:50:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460398935] [2024-11-12 20:50:20,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460398935] [2024-11-12 20:50:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460398935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:20,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:50:20,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429427862] [2024-11-12 20:50:20,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:20,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:50:20,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-11-12 20:50:20,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:20,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:20,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-11-12 20:50:20,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:21,396 INFO L124 PetriNetUnfolderBase]: 9682/14751 cut-off events. [2024-11-12 20:50:21,396 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2024-11-12 20:50:21,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29030 conditions, 14751 events. 9682/14751 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 97584 event pairs, 1731 based on Foata normal form. 442/13582 useless extension candidates. Maximal degree in co-relation 8805. Up to 5038 conditions per place. [2024-11-12 20:50:21,454 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 125 selfloop transitions, 20 changer transitions 1/162 dead transitions. [2024-11-12 20:50:21,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 162 transitions, 690 flow [2024-11-12 20:50:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:50:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:50:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 403 transitions. [2024-11-12 20:50:21,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.552054794520548 [2024-11-12 20:50:21,456 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 10 states and 403 transitions. [2024-11-12 20:50:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 162 transitions, 690 flow [2024-11-12 20:50:21,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 162 transitions, 674 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:21,459 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 269 flow [2024-11-12 20:50:21,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-12 20:50:21,460 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-12 20:50:21,460 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 269 flow [2024-11-12 20:50:21,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:21,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:21,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:21,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:50:21,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:21,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash -193498486, now seen corresponding path program 1 times [2024-11-12 20:50:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:21,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721745968] [2024-11-12 20:50:21,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721745968] [2024-11-12 20:50:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721745968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:21,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630477578] [2024-11-12 20:50:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:21,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:50:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:50:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:50:21,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-12 20:50:21,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:21,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-12 20:50:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:22,404 INFO L124 PetriNetUnfolderBase]: 7390/11443 cut-off events. [2024-11-12 20:50:22,404 INFO L125 PetriNetUnfolderBase]: For 7159/8538 co-relation queries the response was YES. [2024-11-12 20:50:22,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27904 conditions, 11443 events. 7390/11443 cut-off events. For 7159/8538 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 73397 event pairs, 1693 based on Foata normal form. 840/11522 useless extension candidates. Maximal degree in co-relation 27828. Up to 5841 conditions per place. [2024-11-12 20:50:22,469 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 92 selfloop transitions, 10 changer transitions 0/121 dead transitions. [2024-11-12 20:50:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 649 flow [2024-11-12 20:50:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-12 20:50:22,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-11-12 20:50:22,472 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 269 flow. Second operand 6 states and 261 transitions. [2024-11-12 20:50:22,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 649 flow [2024-11-12 20:50:22,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 639 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:22,527 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 288 flow [2024-11-12 20:50:22,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-11-12 20:50:22,527 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-12 20:50:22,528 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 288 flow [2024-11-12 20:50:22,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:22,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:22,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:22,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:50:22,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:22,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash -192427035, now seen corresponding path program 1 times [2024-11-12 20:50:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411948279] [2024-11-12 20:50:22,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411948279] [2024-11-12 20:50:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411948279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24589838] [2024-11-12 20:50:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:22,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:22,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-12 20:50:22,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:22,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:22,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-12 20:50:22,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:23,433 INFO L124 PetriNetUnfolderBase]: 6057/12323 cut-off events. [2024-11-12 20:50:23,433 INFO L125 PetriNetUnfolderBase]: For 4784/5512 co-relation queries the response was YES. [2024-11-12 20:50:23,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25157 conditions, 12323 events. 6057/12323 cut-off events. For 4784/5512 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 118139 event pairs, 3583 based on Foata normal form. 283/10509 useless extension candidates. Maximal degree in co-relation 14712. Up to 5663 conditions per place. [2024-11-12 20:50:23,489 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 46 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-12 20:50:23,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 442 flow [2024-11-12 20:50:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-12 20:50:23,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6678082191780822 [2024-11-12 20:50:23,491 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 288 flow. Second operand 4 states and 195 transitions. [2024-11-12 20:50:23,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 442 flow [2024-11-12 20:50:23,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 422 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:23,511 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 294 flow [2024-11-12 20:50:23,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-12 20:50:23,511 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-11-12 20:50:23,511 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 294 flow [2024-11-12 20:50:23,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:23,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:23,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:23,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:50:23,512 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:23,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash -192427002, now seen corresponding path program 1 times [2024-11-12 20:50:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092987035] [2024-11-12 20:50:23,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:23,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092987035] [2024-11-12 20:50:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092987035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:23,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:23,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:50:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765277803] [2024-11-12 20:50:23,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:23,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:23,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:23,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2024-11-12 20:50:23,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:23,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:23,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2024-11-12 20:50:23,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:24,292 INFO L124 PetriNetUnfolderBase]: 4930/10565 cut-off events. [2024-11-12 20:50:24,292 INFO L125 PetriNetUnfolderBase]: For 4578/5536 co-relation queries the response was YES. [2024-11-12 20:50:24,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22400 conditions, 10565 events. 4930/10565 cut-off events. For 4578/5536 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 101213 event pairs, 4259 based on Foata normal form. 533/9669 useless extension candidates. Maximal degree in co-relation 14165. Up to 6698 conditions per place. [2024-11-12 20:50:24,348 INFO L140 encePairwiseOnDemand]: 71/73 looper letters, 28 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-12 20:50:24,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 329 flow [2024-11-12 20:50:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-12 20:50:24,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662100456621004 [2024-11-12 20:50:24,350 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 294 flow. Second operand 3 states and 124 transitions. [2024-11-12 20:50:24,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 329 flow [2024-11-12 20:50:24,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:24,367 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 254 flow [2024-11-12 20:50:24,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-12 20:50:24,367 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-11-12 20:50:24,367 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 254 flow [2024-11-12 20:50:24,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:24,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:24,368 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:24,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 20:50:24,368 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:24,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -687261062, now seen corresponding path program 1 times [2024-11-12 20:50:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:24,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370108946] [2024-11-12 20:50:24,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:24,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370108946] [2024-11-12 20:50:24,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370108946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:24,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:24,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:50:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947780272] [2024-11-12 20:50:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:24,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:50:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:50:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:50:24,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-12 20:50:24,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:24,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:24,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-12 20:50:24,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:25,218 INFO L124 PetriNetUnfolderBase]: 5278/10921 cut-off events. [2024-11-12 20:50:25,218 INFO L125 PetriNetUnfolderBase]: For 2919/3247 co-relation queries the response was YES. [2024-11-12 20:50:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22799 conditions, 10921 events. 5278/10921 cut-off events. For 2919/3247 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 104446 event pairs, 4567 based on Foata normal form. 3/9407 useless extension candidates. Maximal degree in co-relation 22783. Up to 7198 conditions per place. [2024-11-12 20:50:25,263 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 30 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-12 20:50:25,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 334 flow [2024-11-12 20:50:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:50:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:50:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-12 20:50:25,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2024-11-12 20:50:25,264 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 254 flow. Second operand 3 states and 143 transitions. [2024-11-12 20:50:25,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 334 flow [2024-11-12 20:50:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:25,274 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 280 flow [2024-11-12 20:50:25,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-12 20:50:25,274 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-12 20:50:25,274 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 280 flow [2024-11-12 20:50:25,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:25,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:25,275 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:25,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 20:50:25,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:25,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1187974195, now seen corresponding path program 1 times [2024-11-12 20:50:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180835537] [2024-11-12 20:50:25,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:25,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:50:25,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:25,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180835537] [2024-11-12 20:50:25,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180835537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:25,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:25,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:50:25,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010086766] [2024-11-12 20:50:25,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:25,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:25,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:50:25,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-11-12 20:50:25,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:25,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:25,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-11-12 20:50:25,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:26,245 INFO L124 PetriNetUnfolderBase]: 9147/14736 cut-off events. [2024-11-12 20:50:26,245 INFO L125 PetriNetUnfolderBase]: For 8332/8910 co-relation queries the response was YES. [2024-11-12 20:50:26,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36812 conditions, 14736 events. 9147/14736 cut-off events. For 8332/8910 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 106722 event pairs, 2763 based on Foata normal form. 9/14070 useless extension candidates. Maximal degree in co-relation 36795. Up to 12229 conditions per place. [2024-11-12 20:50:26,330 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 56 selfloop transitions, 11 changer transitions 7/92 dead transitions. [2024-11-12 20:50:26,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 530 flow [2024-11-12 20:50:26,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-11-12 20:50:26,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-11-12 20:50:26,332 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 280 flow. Second operand 6 states and 224 transitions. [2024-11-12 20:50:26,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 530 flow [2024-11-12 20:50:26,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 92 transitions, 513 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 20:50:26,384 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 291 flow [2024-11-12 20:50:26,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-11-12 20:50:26,385 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-11-12 20:50:26,385 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 291 flow [2024-11-12 20:50:26,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:26,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:26,385 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:26,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 20:50:26,386 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:26,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash -529568639, now seen corresponding path program 1 times [2024-11-12 20:50:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116682842] [2024-11-12 20:50:26,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:26,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116682842] [2024-11-12 20:50:26,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116682842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:50:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352700586] [2024-11-12 20:50:26,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:26,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:50:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:50:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:50:26,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-11-12 20:50:26,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:26,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:26,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-11-12 20:50:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:28,841 INFO L124 PetriNetUnfolderBase]: 18714/30045 cut-off events. [2024-11-12 20:50:28,842 INFO L125 PetriNetUnfolderBase]: For 18748/20065 co-relation queries the response was YES. [2024-11-12 20:50:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74260 conditions, 30045 events. 18714/30045 cut-off events. For 18748/20065 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 239181 event pairs, 3919 based on Foata normal form. 761/29918 useless extension candidates. Maximal degree in co-relation 74240. Up to 10309 conditions per place. [2024-11-12 20:50:28,984 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 121 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-11-12 20:50:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 976 flow [2024-11-12 20:50:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:50:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:50:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 346 transitions. [2024-11-12 20:50:28,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266362252663622 [2024-11-12 20:50:28,986 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 291 flow. Second operand 9 states and 346 transitions. [2024-11-12 20:50:28,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 976 flow [2024-11-12 20:50:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 926 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-12 20:50:29,062 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 419 flow [2024-11-12 20:50:29,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=419, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-11-12 20:50:29,062 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-11-12 20:50:29,063 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 419 flow [2024-11-12 20:50:29,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:29,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:29,063 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:29,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 20:50:29,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:29,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash -529568836, now seen corresponding path program 1 times [2024-11-12 20:50:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280987125] [2024-11-12 20:50:29,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280987125] [2024-11-12 20:50:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280987125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355278533] [2024-11-12 20:50:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:29,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:29,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-12 20:50:29,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:29,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:29,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-12 20:50:29,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:30,415 INFO L124 PetriNetUnfolderBase]: 8213/14824 cut-off events. [2024-11-12 20:50:30,415 INFO L125 PetriNetUnfolderBase]: For 4997/5166 co-relation queries the response was YES. [2024-11-12 20:50:30,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33549 conditions, 14824 events. 8213/14824 cut-off events. For 4997/5166 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 136967 event pairs, 3762 based on Foata normal form. 206/13381 useless extension candidates. Maximal degree in co-relation 33528. Up to 10016 conditions per place. [2024-11-12 20:50:30,472 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 37 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-12 20:50:30,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 527 flow [2024-11-12 20:50:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-12 20:50:30,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6267123287671232 [2024-11-12 20:50:30,474 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 419 flow. Second operand 4 states and 183 transitions. [2024-11-12 20:50:30,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 527 flow [2024-11-12 20:50:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:30,493 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 415 flow [2024-11-12 20:50:30,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-11-12 20:50:30,493 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-11-12 20:50:30,493 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 415 flow [2024-11-12 20:50:30,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:30,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:30,494 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:30,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:50:30,494 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:30,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash 763235624, now seen corresponding path program 1 times [2024-11-12 20:50:30,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:30,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990186089] [2024-11-12 20:50:30,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990186089] [2024-11-12 20:50:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990186089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056054019] [2024-11-12 20:50:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:50:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:50:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:50:30,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-12 20:50:30,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:30,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:30,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-12 20:50:30,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:31,675 INFO L124 PetriNetUnfolderBase]: 8233/14398 cut-off events. [2024-11-12 20:50:31,676 INFO L125 PetriNetUnfolderBase]: For 4643/4745 co-relation queries the response was YES. [2024-11-12 20:50:31,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32794 conditions, 14398 events. 8233/14398 cut-off events. For 4643/4745 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 131320 event pairs, 7329 based on Foata normal form. 12/13201 useless extension candidates. Maximal degree in co-relation 32772. Up to 12036 conditions per place. [2024-11-12 20:50:31,748 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 38 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-11-12 20:50:31,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 547 flow [2024-11-12 20:50:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:50:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:50:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-12 20:50:31,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6335616438356164 [2024-11-12 20:50:31,749 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 415 flow. Second operand 4 states and 185 transitions. [2024-11-12 20:50:31,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 547 flow [2024-11-12 20:50:31,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:50:31,776 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 443 flow [2024-11-12 20:50:31,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-12 20:50:31,777 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-11-12 20:50:31,777 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 443 flow [2024-11-12 20:50:31,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:31,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:31,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:31,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:50:31,778 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:31,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:31,779 INFO L85 PathProgramCache]: Analyzing trace with hash 763241765, now seen corresponding path program 1 times [2024-11-12 20:50:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:31,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609989549] [2024-11-12 20:50:31,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:31,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609989549] [2024-11-12 20:50:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609989549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:50:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543766571] [2024-11-12 20:50:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:31,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:50:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:50:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:50:31,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-12 20:50:31,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:31,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:31,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-12 20:50:31,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:33,782 INFO L124 PetriNetUnfolderBase]: 16639/26776 cut-off events. [2024-11-12 20:50:33,783 INFO L125 PetriNetUnfolderBase]: For 30745/33564 co-relation queries the response was YES. [2024-11-12 20:50:33,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72743 conditions, 26776 events. 16639/26776 cut-off events. For 30745/33564 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 211061 event pairs, 4780 based on Foata normal form. 827/27324 useless extension candidates. Maximal degree in co-relation 72720. Up to 13396 conditions per place. [2024-11-12 20:50:33,908 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 105 selfloop transitions, 12 changer transitions 0/135 dead transitions. [2024-11-12 20:50:33,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 933 flow [2024-11-12 20:50:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-12 20:50:33,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5753424657534246 [2024-11-12 20:50:33,909 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 443 flow. Second operand 6 states and 252 transitions. [2024-11-12 20:50:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 933 flow [2024-11-12 20:50:34,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 908 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 20:50:34,082 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 448 flow [2024-11-12 20:50:34,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-11-12 20:50:34,083 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-11-12 20:50:34,083 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 448 flow [2024-11-12 20:50:34,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:34,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:34,083 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:34,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 20:50:34,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:34,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash 332384334, now seen corresponding path program 1 times [2024-11-12 20:50:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:34,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968536014] [2024-11-12 20:50:34,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:34,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:34,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968536014] [2024-11-12 20:50:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968536014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:34,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:50:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375733265] [2024-11-12 20:50:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:34,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:50:34,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:50:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:50:34,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 73 [2024-11-12 20:50:34,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:34,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:34,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 73 [2024-11-12 20:50:34,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:37,928 INFO L124 PetriNetUnfolderBase]: 31073/47080 cut-off events. [2024-11-12 20:50:37,928 INFO L125 PetriNetUnfolderBase]: For 58712/60946 co-relation queries the response was YES. [2024-11-12 20:50:38,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131343 conditions, 47080 events. 31073/47080 cut-off events. For 58712/60946 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 363381 event pairs, 6522 based on Foata normal form. 340/46318 useless extension candidates. Maximal degree in co-relation 131319. Up to 23198 conditions per place. [2024-11-12 20:50:38,198 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 200 selfloop transitions, 36 changer transitions 0/250 dead transitions. [2024-11-12 20:50:38,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 250 transitions, 1748 flow [2024-11-12 20:50:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:50:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:50:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 486 transitions. [2024-11-12 20:50:38,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.512118018967334 [2024-11-12 20:50:38,200 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 448 flow. Second operand 13 states and 486 transitions. [2024-11-12 20:50:38,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 250 transitions, 1748 flow [2024-11-12 20:50:39,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 250 transitions, 1712 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:39,006 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 697 flow [2024-11-12 20:50:39,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=697, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-11-12 20:50:39,006 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-11-12 20:50:39,006 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 697 flow [2024-11-12 20:50:39,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:39,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:39,007 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:39,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-12 20:50:39,007 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:39,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -766690876, now seen corresponding path program 2 times [2024-11-12 20:50:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783555250] [2024-11-12 20:50:39,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783555250] [2024-11-12 20:50:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783555250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:50:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106811739] [2024-11-12 20:50:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:39,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:50:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:50:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:50:39,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 73 [2024-11-12 20:50:39,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:39,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:39,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 73 [2024-11-12 20:50:39,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:43,140 INFO L124 PetriNetUnfolderBase]: 32076/48670 cut-off events. [2024-11-12 20:50:43,140 INFO L125 PetriNetUnfolderBase]: For 92016/94444 co-relation queries the response was YES. [2024-11-12 20:50:43,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145360 conditions, 48670 events. 32076/48670 cut-off events. For 92016/94444 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 377752 event pairs, 4276 based on Foata normal form. 490/48066 useless extension candidates. Maximal degree in co-relation 145334. Up to 14363 conditions per place. [2024-11-12 20:50:43,378 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 185 selfloop transitions, 49 changer transitions 0/248 dead transitions. [2024-11-12 20:50:43,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 248 transitions, 1851 flow [2024-11-12 20:50:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:50:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:50:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 504 transitions. [2024-11-12 20:50:43,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2024-11-12 20:50:43,379 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 697 flow. Second operand 14 states and 504 transitions. [2024-11-12 20:50:43,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 248 transitions, 1851 flow [2024-11-12 20:50:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 248 transitions, 1824 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-12 20:50:44,834 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 895 flow [2024-11-12 20:50:44,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=895, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2024-11-12 20:50:44,834 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2024-11-12 20:50:44,835 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 895 flow [2024-11-12 20:50:44,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:44,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:44,835 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:44,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 20:50:44,835 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:44,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1560466281, now seen corresponding path program 1 times [2024-11-12 20:50:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692662947] [2024-11-12 20:50:44,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:44,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:50:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692662947] [2024-11-12 20:50:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692662947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:50:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647986468] [2024-11-12 20:50:44,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:44,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:50:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:50:44,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:50:44,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:50:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:44,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:50:44,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:50:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:50:45,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:50:45,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647986468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:45,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:50:45,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:50:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8446217] [2024-11-12 20:50:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:45,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:50:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:50:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:50:45,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-12 20:50:45,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:45,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:45,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-12 20:50:45,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:47,197 INFO L124 PetriNetUnfolderBase]: 15268/27290 cut-off events. [2024-11-12 20:50:47,198 INFO L125 PetriNetUnfolderBase]: For 27948/29654 co-relation queries the response was YES. [2024-11-12 20:50:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67151 conditions, 27290 events. 15268/27290 cut-off events. For 27948/29654 co-relation queries the response was YES. Maximal size of possible extension queue 2115. Compared 273882 event pairs, 3103 based on Foata normal form. 868/25520 useless extension candidates. Maximal degree in co-relation 67122. Up to 6040 conditions per place. [2024-11-12 20:50:47,352 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-11-12 20:50:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1269 flow [2024-11-12 20:50:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:50:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:50:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 283 transitions. [2024-11-12 20:50:47,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6461187214611872 [2024-11-12 20:50:47,354 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 895 flow. Second operand 6 states and 283 transitions. [2024-11-12 20:50:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1269 flow [2024-11-12 20:50:47,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 151 transitions, 1208 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-12 20:50:47,500 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 856 flow [2024-11-12 20:50:47,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2024-11-12 20:50:47,501 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-11-12 20:50:47,501 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 856 flow [2024-11-12 20:50:47,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:47,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:47,501 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:47,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:50:47,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 20:50:47,702 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:47,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 178944644, now seen corresponding path program 1 times [2024-11-12 20:50:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064018186] [2024-11-12 20:50:47,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064018186] [2024-11-12 20:50:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064018186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:50:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080027693] [2024-11-12 20:50:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:47,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:50:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:50:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:50:47,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 73 [2024-11-12 20:50:47,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:47,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:47,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 73 [2024-11-12 20:50:47,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:52,266 INFO L124 PetriNetUnfolderBase]: 33079/50873 cut-off events. [2024-11-12 20:50:52,266 INFO L125 PetriNetUnfolderBase]: For 147478/148870 co-relation queries the response was YES. [2024-11-12 20:50:52,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165221 conditions, 50873 events. 33079/50873 cut-off events. For 147478/148870 co-relation queries the response was YES. Maximal size of possible extension queue 2409. Compared 406374 event pairs, 6801 based on Foata normal form. 480/50571 useless extension candidates. Maximal degree in co-relation 165191. Up to 19738 conditions per place. [2024-11-12 20:50:52,603 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 198 selfloop transitions, 49 changer transitions 0/260 dead transitions. [2024-11-12 20:50:52,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 260 transitions, 2200 flow [2024-11-12 20:50:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:50:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:50:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 452 transitions. [2024-11-12 20:50:52,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2024-11-12 20:50:52,605 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 856 flow. Second operand 12 states and 452 transitions. [2024-11-12 20:50:52,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 260 transitions, 2200 flow [2024-11-12 20:50:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 260 transitions, 2116 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-12 20:50:54,542 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1080 flow [2024-11-12 20:50:54,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2024-11-12 20:50:54,543 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-11-12 20:50:54,543 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1080 flow [2024-11-12 20:50:54,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.444444444444443) internal successors, (220), 9 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:54,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:50:54,543 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:50:54,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 20:50:54,544 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:50:54,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:50:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1008977386, now seen corresponding path program 1 times [2024-11-12 20:50:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:50:54,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450636865] [2024-11-12 20:50:54,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:50:54,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:50:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:50:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:50:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:50:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450636865] [2024-11-12 20:50:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450636865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:50:54,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:50:54,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:50:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059552266] [2024-11-12 20:50:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:50:54,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:50:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:50:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:50:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:50:54,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-11-12 20:50:54,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 1080 flow. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:50:54,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:50:54,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-11-12 20:50:54,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:50:58,598 INFO L124 PetriNetUnfolderBase]: 30950/47850 cut-off events. [2024-11-12 20:50:58,598 INFO L125 PetriNetUnfolderBase]: For 168057/172092 co-relation queries the response was YES. [2024-11-12 20:50:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157634 conditions, 47850 events. 30950/47850 cut-off events. For 168057/172092 co-relation queries the response was YES. Maximal size of possible extension queue 2329. Compared 380611 event pairs, 4498 based on Foata normal form. 978/48622 useless extension candidates. Maximal degree in co-relation 157602. Up to 14109 conditions per place. [2024-11-12 20:50:58,882 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 225 selfloop transitions, 46 changer transitions 0/286 dead transitions. [2024-11-12 20:50:58,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 286 transitions, 2393 flow [2024-11-12 20:50:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:50:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:50:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 505 transitions. [2024-11-12 20:50:58,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5764840182648402 [2024-11-12 20:50:58,884 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1080 flow. Second operand 12 states and 505 transitions. [2024-11-12 20:50:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 286 transitions, 2393 flow [2024-11-12 20:51:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 286 transitions, 2324 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-12 20:51:00,919 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 1171 flow [2024-11-12 20:51:00,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1171, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2024-11-12 20:51:00,920 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2024-11-12 20:51:00,920 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 1171 flow [2024-11-12 20:51:00,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:00,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:51:00,921 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:51:00,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-12 20:51:00,921 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-12 20:51:00,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -124404341, now seen corresponding path program 1 times [2024-11-12 20:51:00,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893838409] [2024-11-12 20:51:00,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:00,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:51:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:51:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893838409] [2024-11-12 20:51:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893838409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:51:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:51:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:51:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895865811] [2024-11-12 20:51:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:51:00,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:51:00,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:51:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:51:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:51:01,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-11-12 20:51:01,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 1171 flow. Second operand has 8 states, 8 states have (on average 26.875) internal successors, (215), 8 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:01,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:51:01,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-11-12 20:51:01,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand