./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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 0.3.0-?-e2fb8be-m [2025-03-09 06:45:44,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:45:44,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:45:44,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:45:44,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:45:45,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:45:45,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:45:45,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:45:45,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:45:45,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:45:45,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:45:45,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:45:45,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:45:45,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:45:45,017 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:45:45,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:45:45,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:45:45,019 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:45,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:45:45,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:45:45,020 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-09 06:45:45,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:45:45,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:45:45,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:45:45,256 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:45:45,257 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:45:45,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-09 06:45:46,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68272bdd7/1b5a60e89c0540b2a3285a86082d58c2/FLAG451e3a06f [2025-03-09 06:45:46,640 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:45:46,641 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-09 06:45:46,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68272bdd7/1b5a60e89c0540b2a3285a86082d58c2/FLAG451e3a06f [2025-03-09 06:45:46,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68272bdd7/1b5a60e89c0540b2a3285a86082d58c2 [2025-03-09 06:45:46,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:45:46,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:45:46,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:46,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:45:46,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:45:46,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:46,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e786ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46, skipping insertion in model container [2025-03-09 06:45:46,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:46,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:45:46,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:46,943 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:45:46,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:46,996 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:45:46,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46 WrapperNode [2025-03-09 06:45:46,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:46,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:46,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:45:46,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:45:47,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,019 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-09 06:45:47,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:47,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:45:47,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:45:47,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:45:47,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,035 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]. [2025-03-09 06:45:47,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,038 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:45:47,041 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:45:47,041 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:45:47,042 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:45:47,042 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (1/1) ... [2025-03-09 06:45:47,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:47,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:47,066 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) [2025-03-09 06:45:47,068 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 [2025-03-09 06:45:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:45:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-09 06:45:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-09 06:45:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-09 06:45:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-09 06:45:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:45:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:45:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:45:47,084 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:45:47,167 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:45:47,168 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:45:47,271 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:45:47,272 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:45:47,342 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:45:47,342 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:45:47,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:47 BoogieIcfgContainer [2025-03-09 06:45:47,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:45:47,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:45:47,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:45:47,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:45:47,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:45:46" (1/3) ... [2025-03-09 06:45:47,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:47, skipping insertion in model container [2025-03-09 06:45:47,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:46" (2/3) ... [2025-03-09 06:45:47,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:47, skipping insertion in model container [2025-03-09 06:45:47,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:47" (3/3) ... [2025-03-09 06:45:47,352 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-03-09 06:45:47,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:45:47,364 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:45:47,365 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:45:47,403 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:47,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-03-09 06:45:47,456 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-03-09 06:45:47,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:47,463 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 9. Compared 132 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. [2025-03-09 06:45:47,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-03-09 06:45:47,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-03-09 06:45:47,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:47,487 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;@5d7285e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:47,488 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-09 06:45:47,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:47,496 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:47,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:47,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:47,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:47,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:47,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:47,502 INFO L85 PathProgramCache]: Analyzing trace with hash -255007104, now seen corresponding path program 1 times [2025-03-09 06:45:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:47,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322917533] [2025-03-09 06:45:47,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:47,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:47,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:47,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:47,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:47,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322917533] [2025-03-09 06:45:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322917533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:47,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:47,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:45:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424278420] [2025-03-09 06:45:47,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:47,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:47,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:47,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:47,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:45:47,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2025-03-09 06:45:47,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:47,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:47,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2025-03-09 06:45:47,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,019 INFO L124 PetriNetUnfolderBase]: 108/266 cut-off events. [2025-03-09 06:45:48,020 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:45:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 266 events. 108/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1248 event pairs, 23 based on Foata normal form. 20/258 useless extension candidates. Maximal degree in co-relation 431. Up to 82 conditions per place. [2025-03-09 06:45:48,024 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 46 selfloop transitions, 12 changer transitions 2/69 dead transitions. [2025-03-09 06:45:48,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 274 flow [2025-03-09 06:45:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:45:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:45:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2025-03-09 06:45:48,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2025-03-09 06:45:48,040 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 9 states and 156 transitions. [2025-03-09 06:45:48,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 274 flow [2025-03-09 06:45:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:48,045 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 142 flow [2025-03-09 06:45:48,046 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} [2025-03-09 06:45:48,048 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-03-09 06:45:48,048 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 142 flow [2025-03-09 06:45:48,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,049 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:45:48,049 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 684714539, now seen corresponding path program 1 times [2025-03-09 06:45:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733290539] [2025-03-09 06:45:48,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733290539] [2025-03-09 06:45:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733290539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355319823] [2025-03-09 06:45:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:48,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:48,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-09 06:45:48,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-09 06:45:48,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,232 INFO L124 PetriNetUnfolderBase]: 72/200 cut-off events. [2025-03-09 06:45:48,232 INFO L125 PetriNetUnfolderBase]: For 86/89 co-relation queries the response was YES. [2025-03-09 06:45:48,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 200 events. 72/200 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 829 event pairs, 10 based on Foata normal form. 28/220 useless extension candidates. Maximal degree in co-relation 377. Up to 74 conditions per place. [2025-03-09 06:45:48,233 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 35 selfloop transitions, 5 changer transitions 3/55 dead transitions. [2025-03-09 06:45:48,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 269 flow [2025-03-09 06:45:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:45:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:45:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-09 06:45:48,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2025-03-09 06:45:48,235 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 142 flow. Second operand 5 states and 108 transitions. [2025-03-09 06:45:48,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 269 flow [2025-03-09 06:45:48,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:48,236 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 132 flow [2025-03-09 06:45:48,236 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} [2025-03-09 06:45:48,237 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-03-09 06:45:48,237 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 132 flow [2025-03-09 06:45:48,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:45:48,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:48,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 685585429, now seen corresponding path program 1 times [2025-03-09 06:45:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551591026] [2025-03-09 06:45:48,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551591026] [2025-03-09 06:45:48,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551591026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:45:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417979674] [2025-03-09 06:45:48,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:48,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:48,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:48,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-03-09 06:45:48,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-03-09 06:45:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,313 INFO L124 PetriNetUnfolderBase]: 50/155 cut-off events. [2025-03-09 06:45:48,313 INFO L125 PetriNetUnfolderBase]: For 119/124 co-relation queries the response was YES. [2025-03-09 06:45:48,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 155 events. 50/155 cut-off events. For 119/124 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 637 event pairs, 29 based on Foata normal form. 11/154 useless extension candidates. Maximal degree in co-relation 289. Up to 104 conditions per place. [2025-03-09 06:45:48,314 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 20 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2025-03-09 06:45:48,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 165 flow [2025-03-09 06:45:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2025-03-09 06:45:48,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2025-03-09 06:45:48,315 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 132 flow. Second operand 3 states and 61 transitions. [2025-03-09 06:45:48,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 165 flow [2025-03-09 06:45:48,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:48,316 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 115 flow [2025-03-09 06:45:48,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2025-03-09 06:45:48,317 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-03-09 06:45:48,317 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 115 flow [2025-03-09 06:45:48,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:45:48,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:48,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash 685585462, now seen corresponding path program 1 times [2025-03-09 06:45:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109990717] [2025-03-09 06:45:48,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109990717] [2025-03-09 06:45:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109990717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768375147] [2025-03-09 06:45:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:48,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:48,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-03-09 06:45:48,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-03-09 06:45:48,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,429 INFO L124 PetriNetUnfolderBase]: 94/250 cut-off events. [2025-03-09 06:45:48,429 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-03-09 06:45:48,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 250 events. 94/250 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1080 event pairs, 47 based on Foata normal form. 10/245 useless extension candidates. Maximal degree in co-relation 531. Up to 147 conditions per place. [2025-03-09 06:45:48,432 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2025-03-09 06:45:48,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 211 flow [2025-03-09 06:45:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-03-09 06:45:48,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2025-03-09 06:45:48,435 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 115 flow. Second operand 4 states and 89 transitions. [2025-03-09 06:45:48,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 211 flow [2025-03-09 06:45:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:48,436 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 136 flow [2025-03-09 06:45:48,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-03-09 06:45:48,437 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-03-09 06:45:48,437 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 136 flow [2025-03-09 06:45:48,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,437 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:45:48,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:48,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 878952743, now seen corresponding path program 1 times [2025-03-09 06:45:48,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777212665] [2025-03-09 06:45:48,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:48,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:48,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:48,449 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:45:48,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:48,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:48,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:48,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:45:48,470 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:45:48,470 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-03-09 06:45:48,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-03-09 06:45:48,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-03-09 06:45:48,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-03-09 06:45:48,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-03-09 06:45:48,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:45:48,473 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-09 06:45:48,474 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:45:48,476 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:45:48,496 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:48,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2025-03-09 06:45:48,505 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2025-03-09 06:45:48,505 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:45:48,506 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 9. Compared 255 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. [2025-03-09 06:45:48,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2025-03-09 06:45:48,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2025-03-09 06:45:48,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:48,508 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;@5d7285e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:48,508 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:45:48,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:48,510 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:48,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:48,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,510 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:48,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1105989160, now seen corresponding path program 1 times [2025-03-09 06:45:48,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846302728] [2025-03-09 06:45:48,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:48,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:48,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846302728] [2025-03-09 06:45:48,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846302728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:45:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012964194] [2025-03-09 06:45:48,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:48,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:48,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:45:48,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-03-09 06:45:48,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-03-09 06:45:48,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,902 INFO L124 PetriNetUnfolderBase]: 1210/2223 cut-off events. [2025-03-09 06:45:48,903 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-09 06:45:48,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 2223 events. 1210/2223 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13833 event pairs, 211 based on Foata normal form. 96/2092 useless extension candidates. Maximal degree in co-relation 1893. Up to 518 conditions per place. [2025-03-09 06:45:48,914 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 99 selfloop transitions, 17 changer transitions 1/130 dead transitions. [2025-03-09 06:45:48,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 532 flow [2025-03-09 06:45:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2025-03-09 06:45:48,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5924528301886792 [2025-03-09 06:45:48,918 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 10 states and 314 transitions. [2025-03-09 06:45:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 532 flow [2025-03-09 06:45:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:48,920 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 216 flow [2025-03-09 06:45:48,920 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2025-03-09 06:45:48,921 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2025-03-09 06:45:48,921 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 216 flow [2025-03-09 06:45:48,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:45:48,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:48,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -74074184, now seen corresponding path program 1 times [2025-03-09 06:45:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116048678] [2025-03-09 06:45:48,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116048678] [2025-03-09 06:45:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116048678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863036209] [2025-03-09 06:45:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:48,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:48,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:48,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:48,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,157 INFO L124 PetriNetUnfolderBase]: 857/1647 cut-off events. [2025-03-09 06:45:49,157 INFO L125 PetriNetUnfolderBase]: For 1156/1399 co-relation queries the response was YES. [2025-03-09 06:45:49,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 1647 events. 857/1647 cut-off events. For 1156/1399 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9807 event pairs, 179 based on Foata normal form. 180/1749 useless extension candidates. Maximal degree in co-relation 3855. Up to 773 conditions per place. [2025-03-09 06:45:49,166 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 67 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2025-03-09 06:45:49,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 483 flow [2025-03-09 06:45:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2025-03-09 06:45:49,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6446540880503144 [2025-03-09 06:45:49,167 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 216 flow. Second operand 6 states and 205 transitions. [2025-03-09 06:45:49,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 483 flow [2025-03-09 06:45:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:49,173 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 223 flow [2025-03-09 06:45:49,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2025-03-09 06:45:49,175 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-09 06:45:49,175 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 223 flow [2025-03-09 06:45:49,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:45:49,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:49,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash -73226134, now seen corresponding path program 1 times [2025-03-09 06:45:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937981371] [2025-03-09 06:45:49,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:49,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:49,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937981371] [2025-03-09 06:45:49,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937981371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:45:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231968979] [2025-03-09 06:45:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:49,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:49,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2025-03-09 06:45:49,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2025-03-09 06:45:49,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,310 INFO L124 PetriNetUnfolderBase]: 630/1438 cut-off events. [2025-03-09 06:45:49,310 INFO L125 PetriNetUnfolderBase]: For 1383/1551 co-relation queries the response was YES. [2025-03-09 06:45:49,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 1438 events. 630/1438 cut-off events. For 1383/1551 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9618 event pairs, 529 based on Foata normal form. 64/1340 useless extension candidates. Maximal degree in co-relation 2169. Up to 1028 conditions per place. [2025-03-09 06:45:49,315 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 30 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-03-09 06:45:49,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 267 flow [2025-03-09 06:45:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-03-09 06:45:49,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2025-03-09 06:45:49,316 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 223 flow. Second operand 3 states and 93 transitions. [2025-03-09 06:45:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 49 transitions, 267 flow [2025-03-09 06:45:49,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-09 06:45:49,319 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 182 flow [2025-03-09 06:45:49,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2025-03-09 06:45:49,319 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2025-03-09 06:45:49,319 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 182 flow [2025-03-09 06:45:49,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:45:49,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:49,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -73226101, now seen corresponding path program 1 times [2025-03-09 06:45:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838688278] [2025-03-09 06:45:49,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:49,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:49,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838688278] [2025-03-09 06:45:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838688278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853625610] [2025-03-09 06:45:49,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:49,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:49,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2025-03-09 06:45:49,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2025-03-09 06:45:49,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,541 INFO L124 PetriNetUnfolderBase]: 1165/2509 cut-off events. [2025-03-09 06:45:49,541 INFO L125 PetriNetUnfolderBase]: For 804/976 co-relation queries the response was YES. [2025-03-09 06:45:49,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5302 conditions, 2509 events. 1165/2509 cut-off events. For 804/976 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17972 event pairs, 731 based on Foata normal form. 68/2343 useless extension candidates. Maximal degree in co-relation 5289. Up to 1367 conditions per place. [2025-03-09 06:45:49,550 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2025-03-09 06:45:49,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 400 flow [2025-03-09 06:45:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-09 06:45:49,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2025-03-09 06:45:49,552 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 182 flow. Second operand 4 states and 145 transitions. [2025-03-09 06:45:49,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 400 flow [2025-03-09 06:45:49,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:49,557 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 203 flow [2025-03-09 06:45:49,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-03-09 06:45:49,558 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2025-03-09 06:45:49,558 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 203 flow [2025-03-09 06:45:49,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:45:49,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 839784812, now seen corresponding path program 1 times [2025-03-09 06:45:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043949667] [2025-03-09 06:45:49,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:49,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:49,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043949667] [2025-03-09 06:45:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043949667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:45:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288704043] [2025-03-09 06:45:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:49,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:49,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:49,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 203 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) [2025-03-09 06:45:49,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:49,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,749 INFO L124 PetriNetUnfolderBase]: 1021/2179 cut-off events. [2025-03-09 06:45:49,749 INFO L125 PetriNetUnfolderBase]: For 1303/1389 co-relation queries the response was YES. [2025-03-09 06:45:49,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5281 conditions, 2179 events. 1021/2179 cut-off events. For 1303/1389 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15293 event pairs, 898 based on Foata normal form. 5/1955 useless extension candidates. Maximal degree in co-relation 5266. Up to 1650 conditions per place. [2025-03-09 06:45:49,758 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 34 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-03-09 06:45:49,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 291 flow [2025-03-09 06:45:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-03-09 06:45:49,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2025-03-09 06:45:49,760 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 203 flow. Second operand 3 states and 107 transitions. [2025-03-09 06:45:49,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 291 flow [2025-03-09 06:45:49,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:49,763 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 228 flow [2025-03-09 06:45:49,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2025-03-09 06:45:49,764 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2025-03-09 06:45:49,764 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 228 flow [2025-03-09 06:45:49,764 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) [2025-03-09 06:45:49,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,764 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:45:49,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:49,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash 364854509, now seen corresponding path program 1 times [2025-03-09 06:45:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625519023] [2025-03-09 06:45:49,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:49,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:49,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:45:49,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625519023] [2025-03-09 06:45:49,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625519023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:45:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942755939] [2025-03-09 06:45:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:49,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:49,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:45:49,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2025-03-09 06:45:49,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2025-03-09 06:45:49,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,006 INFO L124 PetriNetUnfolderBase]: 1015/1980 cut-off events. [2025-03-09 06:45:50,006 INFO L125 PetriNetUnfolderBase]: For 1291/1393 co-relation queries the response was YES. [2025-03-09 06:45:50,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 1980 events. 1015/1980 cut-off events. For 1291/1393 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12592 event pairs, 302 based on Foata normal form. 5/1887 useless extension candidates. Maximal degree in co-relation 5070. Up to 1366 conditions per place. [2025-03-09 06:45:50,017 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 9 changer transitions 6/74 dead transitions. [2025-03-09 06:45:50,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 435 flow [2025-03-09 06:45:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2025-03-09 06:45:50,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2025-03-09 06:45:50,020 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 228 flow. Second operand 6 states and 178 transitions. [2025-03-09 06:45:50,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 435 flow [2025-03-09 06:45:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:50,026 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 235 flow [2025-03-09 06:45:50,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=235, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2025-03-09 06:45:50,027 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2025-03-09 06:45:50,027 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 235 flow [2025-03-09 06:45:50,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:50,027 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:50,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:45:50,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:50,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash -479486190, now seen corresponding path program 1 times [2025-03-09 06:45:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945388434] [2025-03-09 06:45:50,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:50,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:50,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:50,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:50,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:50,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945388434] [2025-03-09 06:45:50,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945388434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:50,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:50,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149132619] [2025-03-09 06:45:50,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:50,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:50,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:50,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:50,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:50,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:50,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:50,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,202 INFO L124 PetriNetUnfolderBase]: 976/2167 cut-off events. [2025-03-09 06:45:50,202 INFO L125 PetriNetUnfolderBase]: For 1208/1242 co-relation queries the response was YES. [2025-03-09 06:45:50,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5227 conditions, 2167 events. 976/2167 cut-off events. For 1208/1242 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15586 event pairs, 332 based on Foata normal form. 59/2129 useless extension candidates. Maximal degree in co-relation 5208. Up to 1263 conditions per place. [2025-03-09 06:45:50,212 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2025-03-09 06:45:50,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 379 flow [2025-03-09 06:45:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-03-09 06:45:50,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2025-03-09 06:45:50,213 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 235 flow. Second operand 4 states and 135 transitions. [2025-03-09 06:45:50,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 379 flow [2025-03-09 06:45:50,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 349 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-09 06:45:50,218 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 215 flow [2025-03-09 06:45:50,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2025-03-09 06:45:50,219 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2025-03-09 06:45:50,219 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 215 flow [2025-03-09 06:45:50,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:50,220 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:50,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:45:50,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:50,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash -479485909, now seen corresponding path program 1 times [2025-03-09 06:45:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043035665] [2025-03-09 06:45:50,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:50,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:50,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:50,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:50,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:50,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043035665] [2025-03-09 06:45:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043035665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:50,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:45:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462267412] [2025-03-09 06:45:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:50,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:45:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:50,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:45:50,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:45:50,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-03-09 06:45:50,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:50,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-03-09 06:45:50,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,560 INFO L124 PetriNetUnfolderBase]: 1440/2674 cut-off events. [2025-03-09 06:45:50,561 INFO L125 PetriNetUnfolderBase]: For 1544/1694 co-relation queries the response was YES. [2025-03-09 06:45:50,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 2674 events. 1440/2674 cut-off events. For 1544/1694 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17516 event pairs, 152 based on Foata normal form. 83/2717 useless extension candidates. Maximal degree in co-relation 6598. Up to 724 conditions per place. [2025-03-09 06:45:50,577 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 86 selfloop transitions, 15 changer transitions 0/114 dead transitions. [2025-03-09 06:45:50,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 670 flow [2025-03-09 06:45:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:45:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:45:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2025-03-09 06:45:50,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5450733752620545 [2025-03-09 06:45:50,579 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 215 flow. Second operand 9 states and 260 transitions. [2025-03-09 06:45:50,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 670 flow [2025-03-09 06:45:50,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:50,584 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 280 flow [2025-03-09 06:45:50,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-03-09 06:45:50,585 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-03-09 06:45:50,585 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 280 flow [2025-03-09 06:45:50,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:50,585 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:50,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:45:50,585 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:50,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:50,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1979169811, now seen corresponding path program 1 times [2025-03-09 06:45:50,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:50,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335286035] [2025-03-09 06:45:50,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:50,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:50,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:50,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:50,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:50,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:45:50,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:50,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335286035] [2025-03-09 06:45:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335286035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:50,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477839677] [2025-03-09 06:45:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:50,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:50,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:50,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:50,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:50,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:50,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:50,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,753 INFO L124 PetriNetUnfolderBase]: 1114/2464 cut-off events. [2025-03-09 06:45:50,753 INFO L125 PetriNetUnfolderBase]: For 2126/2228 co-relation queries the response was YES. [2025-03-09 06:45:50,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 2464 events. 1114/2464 cut-off events. For 2126/2228 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18317 event pairs, 275 based on Foata normal form. 67/2531 useless extension candidates. Maximal degree in co-relation 6105. Up to 1656 conditions per place. [2025-03-09 06:45:50,763 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 49 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-03-09 06:45:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 484 flow [2025-03-09 06:45:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-09 06:45:50,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-03-09 06:45:50,764 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 280 flow. Second operand 4 states and 136 transitions. [2025-03-09 06:45:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 484 flow [2025-03-09 06:45:50,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 476 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:50,768 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 290 flow [2025-03-09 06:45:50,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=290, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-03-09 06:45:50,769 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-03-09 06:45:50,769 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 290 flow [2025-03-09 06:45:50,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:50,769 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:50,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:45:50,770 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:50,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1979161060, now seen corresponding path program 1 times [2025-03-09 06:45:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290702625] [2025-03-09 06:45:50,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:50,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:50,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:50,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:50,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290702625] [2025-03-09 06:45:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290702625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:50,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880473922] [2025-03-09 06:45:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:50,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:50,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:50,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:50,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:50,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:50,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:50,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:51,007 INFO L124 PetriNetUnfolderBase]: 1256/2397 cut-off events. [2025-03-09 06:45:51,007 INFO L125 PetriNetUnfolderBase]: For 2847/2989 co-relation queries the response was YES. [2025-03-09 06:45:51,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 2397 events. 1256/2397 cut-off events. For 2847/2989 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15660 event pairs, 234 based on Foata normal form. 77/2474 useless extension candidates. Maximal degree in co-relation 6583. Up to 1144 conditions per place. [2025-03-09 06:45:51,015 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2025-03-09 06:45:51,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 625 flow [2025-03-09 06:45:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2025-03-09 06:45:51,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2025-03-09 06:45:51,020 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 290 flow. Second operand 6 states and 196 transitions. [2025-03-09 06:45:51,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 625 flow [2025-03-09 06:45:51,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 94 transitions, 598 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:51,028 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 285 flow [2025-03-09 06:45:51,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=285, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2025-03-09 06:45:51,029 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2025-03-09 06:45:51,029 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 285 flow [2025-03-09 06:45:51,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:51,029 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:45:51,029 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:51,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 688332324, now seen corresponding path program 1 times [2025-03-09 06:45:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003458260] [2025-03-09 06:45:51,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:51,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:51,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:51,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:51,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:51,040 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:45:51,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:51,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:51,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:51,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:51,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:45:51,049 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-03-09 06:45:51,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-03-09 06:45:51,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-03-09 06:45:51,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:45:51,050 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,050 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:45:51,050 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 06:45:51,073 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:51,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2025-03-09 06:45:51,081 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2025-03-09 06:45:51,081 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:45:51,082 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 9. Compared 370 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. [2025-03-09 06:45:51,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2025-03-09 06:45:51,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2025-03-09 06:45:51,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:51,083 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;@5d7285e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:51,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-09 06:45:51,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:51,084 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:51,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:51,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:51,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,084 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:51,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash -666107868, now seen corresponding path program 1 times [2025-03-09 06:45:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50028360] [2025-03-09 06:45:51,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:51,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:51,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:51,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:51,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:51,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50028360] [2025-03-09 06:45:51,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50028360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:51,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:51,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:45:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134165220] [2025-03-09 06:45:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:51,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:51,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:51,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:45:51,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-09 06:45:51,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:51,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-09 06:45:51,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:51,831 INFO L124 PetriNetUnfolderBase]: 8710/13562 cut-off events. [2025-03-09 06:45:51,832 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-03-09 06:45:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 13562 events. 8710/13562 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93611 event pairs, 1571 based on Foata normal form. 400/12753 useless extension candidates. Maximal degree in co-relation 8369. Up to 4536 conditions per place. [2025-03-09 06:45:51,875 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 119 selfloop transitions, 20 changer transitions 1/157 dead transitions. [2025-03-09 06:45:51,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 668 flow [2025-03-09 06:45:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 427 transitions. [2025-03-09 06:45:51,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584931506849315 [2025-03-09 06:45:51,878 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 10 states and 427 transitions. [2025-03-09 06:45:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 668 flow [2025-03-09 06:45:51,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 157 transitions, 652 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:51,880 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 269 flow [2025-03-09 06:45:51,880 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} [2025-03-09 06:45:51,881 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-09 06:45:51,881 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 269 flow [2025-03-09 06:45:51,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:51,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:45:51,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:51,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 825492883, now seen corresponding path program 1 times [2025-03-09 06:45:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984796289] [2025-03-09 06:45:51,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:51,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:51,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:51,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:51,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984796289] [2025-03-09 06:45:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984796289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:51,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623369636] [2025-03-09 06:45:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:51,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:51,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:51,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:51,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:51,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:52,516 INFO L124 PetriNetUnfolderBase]: 6487/10082 cut-off events. [2025-03-09 06:45:52,516 INFO L125 PetriNetUnfolderBase]: For 6555/7922 co-relation queries the response was YES. [2025-03-09 06:45:52,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24806 conditions, 10082 events. 6487/10082 cut-off events. For 6555/7922 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 65439 event pairs, 1511 based on Foata normal form. 771/10458 useless extension candidates. Maximal degree in co-relation 24736. Up to 5153 conditions per place. [2025-03-09 06:45:52,565 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 88 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2025-03-09 06:45:52,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 635 flow [2025-03-09 06:45:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2025-03-09 06:45:52,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6278538812785388 [2025-03-09 06:45:52,567 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 269 flow. Second operand 6 states and 275 transitions. [2025-03-09 06:45:52,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 635 flow [2025-03-09 06:45:52,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:52,600 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 288 flow [2025-03-09 06:45:52,600 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} [2025-03-09 06:45:52,601 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2025-03-09 06:45:52,601 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 288 flow [2025-03-09 06:45:52,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:52,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:52,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:52,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 06:45:52,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:52,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 826315114, now seen corresponding path program 1 times [2025-03-09 06:45:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074547983] [2025-03-09 06:45:52,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:52,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:52,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:52,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:52,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074547983] [2025-03-09 06:45:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074547983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:45:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047461434] [2025-03-09 06:45:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:52,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:52,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:52,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:52,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2025-03-09 06:45:52,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:52,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:52,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2025-03-09 06:45:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:53,098 INFO L124 PetriNetUnfolderBase]: 4756/8857 cut-off events. [2025-03-09 06:45:53,098 INFO L125 PetriNetUnfolderBase]: For 5847/6941 co-relation queries the response was YES. [2025-03-09 06:45:53,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19973 conditions, 8857 events. 4756/8857 cut-off events. For 5847/6941 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 70899 event pairs, 3999 based on Foata normal form. 307/8109 useless extension candidates. Maximal degree in co-relation 11400. Up to 6872 conditions per place. [2025-03-09 06:45:53,129 INFO L140 encePairwiseOnDemand]: 71/73 looper letters, 40 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2025-03-09 06:45:53,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 344 flow [2025-03-09 06:45:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2025-03-09 06:45:53,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662100456621004 [2025-03-09 06:45:53,130 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 288 flow. Second operand 3 states and 124 transitions. [2025-03-09 06:45:53,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 344 flow [2025-03-09 06:45:53,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 314 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-09 06:45:53,138 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 234 flow [2025-03-09 06:45:53,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2025-03-09 06:45:53,139 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-09 06:45:53,139 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 234 flow [2025-03-09 06:45:53,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:53,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:53,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:53,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:45:53,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:53,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 826315147, now seen corresponding path program 1 times [2025-03-09 06:45:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360094188] [2025-03-09 06:45:53,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:53,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:53,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:53,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:53,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:53,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360094188] [2025-03-09 06:45:53,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360094188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:53,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:53,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:53,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724855621] [2025-03-09 06:45:53,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:53,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:53,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:53,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:53,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-09 06:45:53,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:53,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:53,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-09 06:45:53,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:53,911 INFO L124 PetriNetUnfolderBase]: 8725/15874 cut-off events. [2025-03-09 06:45:53,911 INFO L125 PetriNetUnfolderBase]: For 4896/6038 co-relation queries the response was YES. [2025-03-09 06:45:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33497 conditions, 15874 events. 8725/15874 cut-off events. For 4896/6038 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 136004 event pairs, 5443 based on Foata normal form. 376/14685 useless extension candidates. Maximal degree in co-relation 33483. Up to 9115 conditions per place. [2025-03-09 06:45:53,968 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 85 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2025-03-09 06:45:53,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 580 flow [2025-03-09 06:45:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-09 06:45:53,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815068493150684 [2025-03-09 06:45:53,970 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 234 flow. Second operand 4 states and 199 transitions. [2025-03-09 06:45:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 580 flow [2025-03-09 06:45:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:53,978 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 255 flow [2025-03-09 06:45:53,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-03-09 06:45:53,978 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-03-09 06:45:53,978 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 255 flow [2025-03-09 06:45:53,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:53,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:53,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:53,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:45:53,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:53,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:53,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1154370968, now seen corresponding path program 1 times [2025-03-09 06:45:53,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:53,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728356176] [2025-03-09 06:45:53,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:53,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:53,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:53,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:53,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:53,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:53,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728356176] [2025-03-09 06:45:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728356176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:45:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222500894] [2025-03-09 06:45:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:53,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:53,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:53,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:54,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:54,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:54,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:54,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:54,787 INFO L124 PetriNetUnfolderBase]: 7741/14538 cut-off events. [2025-03-09 06:45:54,788 INFO L125 PetriNetUnfolderBase]: For 7608/8164 co-relation queries the response was YES. [2025-03-09 06:45:54,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33588 conditions, 14538 events. 7741/14538 cut-off events. For 7608/8164 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 126986 event pairs, 6722 based on Foata normal form. 5/12727 useless extension candidates. Maximal degree in co-relation 33572. Up to 11168 conditions per place. [2025-03-09 06:45:54,864 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 44 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2025-03-09 06:45:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 363 flow [2025-03-09 06:45:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2025-03-09 06:45:54,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6575342465753424 [2025-03-09 06:45:54,865 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 255 flow. Second operand 3 states and 144 transitions. [2025-03-09 06:45:54,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 363 flow [2025-03-09 06:45:54,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:54,880 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 280 flow [2025-03-09 06:45:54,880 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} [2025-03-09 06:45:54,881 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-03-09 06:45:54,881 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 280 flow [2025-03-09 06:45:54,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:54,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:54,881 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:54,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:45:54,881 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:54,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1997663000, now seen corresponding path program 1 times [2025-03-09 06:45:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:54,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529571008] [2025-03-09 06:45:54,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:54,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:54,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:54,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:54,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:45:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:54,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529571008] [2025-03-09 06:45:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529571008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:45:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859564457] [2025-03-09 06:45:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:54,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:54,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:54,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:45:54,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-09 06:45:54,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:54,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:54,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-09 06:45:54,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:55,504 INFO L124 PetriNetUnfolderBase]: 7602/12401 cut-off events. [2025-03-09 06:45:55,504 INFO L125 PetriNetUnfolderBase]: For 7752/8330 co-relation queries the response was YES. [2025-03-09 06:45:55,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31538 conditions, 12401 events. 7602/12401 cut-off events. For 7752/8330 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 89817 event pairs, 2391 based on Foata normal form. 9/11727 useless extension candidates. Maximal degree in co-relation 31521. Up to 10197 conditions per place. [2025-03-09 06:45:55,553 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 54 selfloop transitions, 11 changer transitions 6/90 dead transitions. [2025-03-09 06:45:55,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 520 flow [2025-03-09 06:45:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-03-09 06:45:55,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.545662100456621 [2025-03-09 06:45:55,555 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 280 flow. Second operand 6 states and 239 transitions. [2025-03-09 06:45:55,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 520 flow [2025-03-09 06:45:55,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 503 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:55,582 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 291 flow [2025-03-09 06:45:55,582 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} [2025-03-09 06:45:55,582 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2025-03-09 06:45:55,582 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 291 flow [2025-03-09 06:45:55,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:55,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:55,582 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:55,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:45:55,582 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:55,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1712044466, now seen corresponding path program 1 times [2025-03-09 06:45:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:55,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137237146] [2025-03-09 06:45:55,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:55,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:55,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:55,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:55,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:55,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137237146] [2025-03-09 06:45:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137237146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912992635] [2025-03-09 06:45:55,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:55,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:55,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:55,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:55,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:55,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:55,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:55,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:55,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:55,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:56,221 INFO L124 PetriNetUnfolderBase]: 7477/14143 cut-off events. [2025-03-09 06:45:56,221 INFO L125 PetriNetUnfolderBase]: For 7046/7268 co-relation queries the response was YES. [2025-03-09 06:45:56,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33145 conditions, 14143 events. 7477/14143 cut-off events. For 7046/7268 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 124184 event pairs, 2316 based on Foata normal form. 363/13802 useless extension candidates. Maximal degree in co-relation 33125. Up to 8544 conditions per place. [2025-03-09 06:45:56,270 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 62 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2025-03-09 06:45:56,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 513 flow [2025-03-09 06:45:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-03-09 06:45:56,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-09 06:45:56,271 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 291 flow. Second operand 4 states and 186 transitions. [2025-03-09 06:45:56,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 513 flow [2025-03-09 06:45:56,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 475 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-09 06:45:56,316 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 267 flow [2025-03-09 06:45:56,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2025-03-09 06:45:56,316 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2025-03-09 06:45:56,317 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 267 flow [2025-03-09 06:45:56,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:56,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:56,317 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:56,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:45:56,317 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1712044523, now seen corresponding path program 1 times [2025-03-09 06:45:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862775462] [2025-03-09 06:45:56,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:56,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:56,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:56,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:56,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862775462] [2025-03-09 06:45:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862775462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:45:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691188481] [2025-03-09 06:45:56,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:56,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:45:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:56,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:45:56,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:45:56,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-09 06:45:56,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:56,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:56,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-09 06:45:56,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:57,388 INFO L124 PetriNetUnfolderBase]: 14910/24037 cut-off events. [2025-03-09 06:45:57,389 INFO L125 PetriNetUnfolderBase]: For 12816/14108 co-relation queries the response was YES. [2025-03-09 06:45:57,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59002 conditions, 24037 events. 14910/24037 cut-off events. For 12816/14108 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 189127 event pairs, 3103 based on Foata normal form. 609/24100 useless extension candidates. Maximal degree in co-relation 58985. Up to 8224 conditions per place. [2025-03-09 06:45:57,477 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 111 selfloop transitions, 23 changer transitions 0/151 dead transitions. [2025-03-09 06:45:57,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 886 flow [2025-03-09 06:45:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:45:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:45:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 363 transitions. [2025-03-09 06:45:57,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5525114155251142 [2025-03-09 06:45:57,479 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 267 flow. Second operand 9 states and 363 transitions. [2025-03-09 06:45:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 886 flow [2025-03-09 06:45:57,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:57,526 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 417 flow [2025-03-09 06:45:57,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-03-09 06:45:57,526 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2025-03-09 06:45:57,526 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 417 flow [2025-03-09 06:45:57,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:57,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:57,526 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:57,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:45:57,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:57,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:57,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1533771158, now seen corresponding path program 1 times [2025-03-09 06:45:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:57,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379572559] [2025-03-09 06:45:57,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:57,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:57,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:57,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:57,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:57,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379572559] [2025-03-09 06:45:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379572559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:57,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931887425] [2025-03-09 06:45:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:57,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:57,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:57,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:57,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:57,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:57,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:57,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:58,716 INFO L124 PetriNetUnfolderBase]: 11890/21672 cut-off events. [2025-03-09 06:45:58,716 INFO L125 PetriNetUnfolderBase]: For 24108/25864 co-relation queries the response was YES. [2025-03-09 06:45:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54956 conditions, 21672 events. 11890/21672 cut-off events. For 24108/25864 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 196873 event pairs, 7147 based on Foata normal form. 525/20240 useless extension candidates. Maximal degree in co-relation 54935. Up to 17102 conditions per place. [2025-03-09 06:45:58,836 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 70 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2025-03-09 06:45:58,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 682 flow [2025-03-09 06:45:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-03-09 06:45:58,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6404109589041096 [2025-03-09 06:45:58,837 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 417 flow. Second operand 4 states and 187 transitions. [2025-03-09 06:45:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 682 flow [2025-03-09 06:45:58,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:58,874 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 443 flow [2025-03-09 06:45:58,874 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} [2025-03-09 06:45:58,874 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2025-03-09 06:45:58,875 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 443 flow [2025-03-09 06:45:58,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:58,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:58,875 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:58,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-09 06:45:58,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:58,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1533772958, now seen corresponding path program 1 times [2025-03-09 06:45:58,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:58,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373795451] [2025-03-09 06:45:58,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:58,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:58,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:58,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:58,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:58,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:58,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:58,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373795451] [2025-03-09 06:45:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373795451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750568637] [2025-03-09 06:45:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:58,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:58,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:58,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:58,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:58,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:58,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:58,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:58,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:00,286 INFO L124 PetriNetUnfolderBase]: 13621/22052 cut-off events. [2025-03-09 06:46:00,287 INFO L125 PetriNetUnfolderBase]: For 27077/29852 co-relation queries the response was YES. [2025-03-09 06:46:00,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61057 conditions, 22052 events. 13621/22052 cut-off events. For 27077/29852 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 172957 event pairs, 3938 based on Foata normal form. 683/22467 useless extension candidates. Maximal degree in co-relation 61034. Up to 10990 conditions per place. [2025-03-09 06:46:00,394 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 101 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2025-03-09 06:46:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 919 flow [2025-03-09 06:46:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2025-03-09 06:46:00,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2025-03-09 06:46:00,395 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 443 flow. Second operand 6 states and 266 transitions. [2025-03-09 06:46:00,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 919 flow [2025-03-09 06:46:00,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 894 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-09 06:46:00,515 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 448 flow [2025-03-09 06:46:00,515 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} [2025-03-09 06:46:00,516 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2025-03-09 06:46:00,516 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 448 flow [2025-03-09 06:46:00,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:00,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:00,516 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:00,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 06:46:00,516 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash 575878398, now seen corresponding path program 1 times [2025-03-09 06:46:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675051995] [2025-03-09 06:46:00,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:00,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:00,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:46:00,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:46:00,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:00,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675051995] [2025-03-09 06:46:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675051995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:00,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:00,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:46:00,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595188623] [2025-03-09 06:46:00,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:00,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:46:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:00,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:46:00,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:46:00,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-09 06:46:00,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:00,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:00,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-09 06:46:00,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:02,526 INFO L124 PetriNetUnfolderBase]: 25611/38882 cut-off events. [2025-03-09 06:46:02,527 INFO L125 PetriNetUnfolderBase]: For 51623/53845 co-relation queries the response was YES. [2025-03-09 06:46:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110931 conditions, 38882 events. 25611/38882 cut-off events. For 51623/53845 co-relation queries the response was YES. Maximal size of possible extension queue 1930. Compared 298804 event pairs, 5416 based on Foata normal form. 284/38065 useless extension candidates. Maximal degree in co-relation 110907. Up to 19178 conditions per place. [2025-03-09 06:46:02,757 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 192 selfloop transitions, 36 changer transitions 0/243 dead transitions. [2025-03-09 06:46:02,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 243 transitions, 1718 flow [2025-03-09 06:46:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:46:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:46:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 517 transitions. [2025-03-09 06:46:02,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447839831401475 [2025-03-09 06:46:02,758 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 448 flow. Second operand 13 states and 517 transitions. [2025-03-09 06:46:02,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 243 transitions, 1718 flow [2025-03-09 06:46:03,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 243 transitions, 1682 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-09 06:46:03,350 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 697 flow [2025-03-09 06:46:03,350 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} [2025-03-09 06:46:03,350 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2025-03-09 06:46:03,350 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 697 flow [2025-03-09 06:46:03,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:03,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:03,350 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:03,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 06:46:03,350 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:03,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1363128088, now seen corresponding path program 2 times [2025-03-09 06:46:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:03,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657131007] [2025-03-09 06:46:03,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:46:03,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:03,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:46:03,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:46:03,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:46:03,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657131007] [2025-03-09 06:46:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657131007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:46:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057372259] [2025-03-09 06:46:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:03,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:46:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:03,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:46:03,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:46:03,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-09 06:46:03,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:03,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:03,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-09 06:46:03,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:05,878 INFO L124 PetriNetUnfolderBase]: 26438/40254 cut-off events. [2025-03-09 06:46:05,878 INFO L125 PetriNetUnfolderBase]: For 79340/81704 co-relation queries the response was YES. [2025-03-09 06:46:05,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122742 conditions, 40254 events. 26438/40254 cut-off events. For 79340/81704 co-relation queries the response was YES. Maximal size of possible extension queue 2016. Compared 311647 event pairs, 3552 based on Foata normal form. 378/39601 useless extension candidates. Maximal degree in co-relation 122716. Up to 11875 conditions per place. [2025-03-09 06:46:06,043 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 177 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2025-03-09 06:46:06,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 241 transitions, 1821 flow [2025-03-09 06:46:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 06:46:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 06:46:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 538 transitions. [2025-03-09 06:46:06,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264187866927593 [2025-03-09 06:46:06,044 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 697 flow. Second operand 14 states and 538 transitions. [2025-03-09 06:46:06,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 241 transitions, 1821 flow [2025-03-09 06:46:07,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 241 transitions, 1794 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-09 06:46:07,043 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 895 flow [2025-03-09 06:46:07,043 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} [2025-03-09 06:46:07,043 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2025-03-09 06:46:07,043 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 895 flow [2025-03-09 06:46:07,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:07,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:07,043 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:07,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-09 06:46:07,043 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:07,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1021344174, now seen corresponding path program 1 times [2025-03-09 06:46:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:07,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693872899] [2025-03-09 06:46:07,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:07,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:07,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:46:07,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:46:07,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:07,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693872899] [2025-03-09 06:46:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693872899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:46:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884893669] [2025-03-09 06:46:07,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:46:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:46:07,075 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) [2025-03-09 06:46:07,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:46:07,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:46:07,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:46:07,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:07,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:07,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:46:07,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:46:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:07,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:46:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884893669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:07,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:46:07,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:46:07,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741670214] [2025-03-09 06:46:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:07,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:46:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:07,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:46:07,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:46:07,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-09 06:46:07,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:07,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:07,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-09 06:46:07,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:09,779 INFO L124 PetriNetUnfolderBase]: 22967/41748 cut-off events. [2025-03-09 06:46:09,779 INFO L125 PetriNetUnfolderBase]: For 108853/113153 co-relation queries the response was YES. [2025-03-09 06:46:09,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118721 conditions, 41748 events. 22967/41748 cut-off events. For 108853/113153 co-relation queries the response was YES. Maximal size of possible extension queue 2079. Compared 409551 event pairs, 5360 based on Foata normal form. 2025/41902 useless extension candidates. Maximal degree in co-relation 118692. Up to 9031 conditions per place. [2025-03-09 06:46:10,050 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 281 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2025-03-09 06:46:10,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 314 transitions, 3689 flow [2025-03-09 06:46:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2025-03-09 06:46:10,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2025-03-09 06:46:10,051 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 895 flow. Second operand 6 states and 291 transitions. [2025-03-09 06:46:10,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 314 transitions, 3689 flow [2025-03-09 06:46:10,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 314 transitions, 3544 flow, removed 25 selfloop flow, removed 8 redundant places. [2025-03-09 06:46:10,557 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 856 flow [2025-03-09 06:46:10,557 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} [2025-03-09 06:46:10,557 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2025-03-09 06:46:10,558 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 856 flow [2025-03-09 06:46:10,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:10,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:10,558 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:10,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:46:10,758 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 [2025-03-09 06:46:10,758 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:10,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1526573170, now seen corresponding path program 1 times [2025-03-09 06:46:10,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:10,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508781847] [2025-03-09 06:46:10,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:10,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:10,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:46:10,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:46:10,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:10,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:10,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508781847] [2025-03-09 06:46:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508781847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:10,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:10,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:46:10,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679096799] [2025-03-09 06:46:10,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:10,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:46:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:10,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:46:10,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:46:10,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-09 06:46:10,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:10,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:10,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-09 06:46:10,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:13,739 INFO L124 PetriNetUnfolderBase]: 27265/42111 cut-off events. [2025-03-09 06:46:13,739 INFO L125 PetriNetUnfolderBase]: For 126674/128026 co-relation queries the response was YES. [2025-03-09 06:46:13,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140329 conditions, 42111 events. 27265/42111 cut-off events. For 126674/128026 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 336290 event pairs, 5813 based on Foata normal form. 400/41733 useless extension candidates. Maximal degree in co-relation 140299. Up to 16318 conditions per place. [2025-03-09 06:46:13,987 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 190 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2025-03-09 06:46:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 253 transitions, 2170 flow [2025-03-09 06:46:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:46:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:46:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-03-09 06:46:13,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-03-09 06:46:13,988 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 856 flow. Second operand 12 states and 480 transitions. [2025-03-09 06:46:13,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 253 transitions, 2170 flow [2025-03-09 06:46:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 253 transitions, 2086 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-03-09 06:46:15,418 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1080 flow [2025-03-09 06:46:15,419 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} [2025-03-09 06:46:15,419 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2025-03-09 06:46:15,419 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1080 flow [2025-03-09 06:46:15,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:15,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:15,419 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:15,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-09 06:46:15,419 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:15,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1752658435, now seen corresponding path program 1 times [2025-03-09 06:46:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247660186] [2025-03-09 06:46:15,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:15,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:15,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:15,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:15,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:15,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247660186] [2025-03-09 06:46:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247660186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:15,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:46:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141179871] [2025-03-09 06:46:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:15,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:46:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:15,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:46:15,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:46:15,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-09 06:46:15,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 1080 flow. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 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) [2025-03-09 06:46:15,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:15,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-09 06:46:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:18,128 INFO L124 PetriNetUnfolderBase]: 25328/39172 cut-off events. [2025-03-09 06:46:18,128 INFO L125 PetriNetUnfolderBase]: For 142436/146359 co-relation queries the response was YES. [2025-03-09 06:46:18,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131906 conditions, 39172 events. 25328/39172 cut-off events. For 142436/146359 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 309211 event pairs, 3714 based on Foata normal form. 786/39699 useless extension candidates. Maximal degree in co-relation 131874. Up to 11581 conditions per place. [2025-03-09 06:46:18,326 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 215 selfloop transitions, 46 changer transitions 0/277 dead transitions. [2025-03-09 06:46:18,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 277 transitions, 2355 flow [2025-03-09 06:46:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:46:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:46:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-09 06:46:18,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-09 06:46:18,327 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1080 flow. Second operand 12 states and 531 transitions. [2025-03-09 06:46:18,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 277 transitions, 2355 flow [2025-03-09 06:46:19,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 277 transitions, 2286 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-09 06:46:19,614 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 1171 flow [2025-03-09 06:46:19,614 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} [2025-03-09 06:46:19,615 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2025-03-09 06:46:19,615 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 1171 flow [2025-03-09 06:46:19,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 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) [2025-03-09 06:46:19,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:19,615 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:19,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-09 06:46:19,615 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:19,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1740169371, now seen corresponding path program 1 times [2025-03-09 06:46:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450508487] [2025-03-09 06:46:19,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:19,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:19,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:19,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:19,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:19,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450508487] [2025-03-09 06:46:19,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450508487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:19,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:19,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:46:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890088777] [2025-03-09 06:46:19,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:19,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:46:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:19,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:46:19,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:46:19,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-09 06:46:19,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 1171 flow. Second operand has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:19,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:19,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-09 06:46:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:23,888 INFO L124 PetriNetUnfolderBase]: 37552/61378 cut-off events. [2025-03-09 06:46:23,888 INFO L125 PetriNetUnfolderBase]: For 206477/210747 co-relation queries the response was YES. [2025-03-09 06:46:24,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194648 conditions, 61378 events. 37552/61378 cut-off events. For 206477/210747 co-relation queries the response was YES. Maximal size of possible extension queue 3160. Compared 563417 event pairs, 18931 based on Foata normal form. 2066/62121 useless extension candidates. Maximal degree in co-relation 194615. Up to 23657 conditions per place. [2025-03-09 06:46:24,246 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 180 selfloop transitions, 103 changer transitions 0/312 dead transitions. [2025-03-09 06:46:24,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 312 transitions, 3460 flow [2025-03-09 06:46:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:46:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:46:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-03-09 06:46:24,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-03-09 06:46:24,247 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 1171 flow. Second operand 12 states and 480 transitions. [2025-03-09 06:46:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 312 transitions, 3460 flow [2025-03-09 06:46:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 312 transitions, 3282 flow, removed 11 selfloop flow, removed 5 redundant places. [2025-03-09 06:46:25,802 INFO L231 Difference]: Finished difference. Result has 138 places, 203 transitions, 2578 flow [2025-03-09 06:46:25,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=138, PETRI_TRANSITIONS=203} [2025-03-09 06:46:25,802 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2025-03-09 06:46:25,803 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 203 transitions, 2578 flow [2025-03-09 06:46:25,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:25,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:25,803 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:25,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-09 06:46:25,803 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:25,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash -79127703, now seen corresponding path program 1 times [2025-03-09 06:46:25,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039530040] [2025-03-09 06:46:25,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:25,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:25,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:25,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:25,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:25,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039530040] [2025-03-09 06:46:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039530040] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:46:25,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52773801] [2025-03-09 06:46:25,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:25,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:46:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:46:25,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:46:25,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:46:25,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:25,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:25,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:25,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:25,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:46:25,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:46:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:25,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:46:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52773801] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:46:25,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:46:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:46:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994528280] [2025-03-09 06:46:25,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:46:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:46:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:25,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:46:25,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:46:26,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-09 06:46:26,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 203 transitions, 2578 flow. Second operand has 13 states, 13 states have (on average 29.846153846153847) internal successors, (388), 13 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:26,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:26,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-09 06:46:26,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:31,111 INFO L124 PetriNetUnfolderBase]: 41932/65824 cut-off events. [2025-03-09 06:46:31,111 INFO L125 PetriNetUnfolderBase]: For 262991/272836 co-relation queries the response was YES. [2025-03-09 06:46:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223615 conditions, 65824 events. 41932/65824 cut-off events. For 262991/272836 co-relation queries the response was YES. Maximal size of possible extension queue 3364. Compared 569653 event pairs, 2643 based on Foata normal form. 2691/68313 useless extension candidates. Maximal degree in co-relation 223575. Up to 10073 conditions per place. [2025-03-09 06:46:31,716 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 344 selfloop transitions, 137 changer transitions 2/499 dead transitions. [2025-03-09 06:46:31,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 499 transitions, 5013 flow [2025-03-09 06:46:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-09 06:46:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-09 06:46:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 869 transitions. [2025-03-09 06:46:31,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952054794520548 [2025-03-09 06:46:31,717 INFO L175 Difference]: Start difference. First operand has 138 places, 203 transitions, 2578 flow. Second operand 20 states and 869 transitions. [2025-03-09 06:46:31,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 499 transitions, 5013 flow [2025-03-09 06:46:35,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 499 transitions, 4977 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-03-09 06:46:35,556 INFO L231 Difference]: Finished difference. Result has 159 places, 206 transitions, 2876 flow [2025-03-09 06:46:35,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2876, PETRI_PLACES=159, PETRI_TRANSITIONS=206} [2025-03-09 06:46:35,556 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 102 predicate places. [2025-03-09 06:46:35,556 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 206 transitions, 2876 flow [2025-03-09 06:46:35,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.846153846153847) internal successors, (388), 13 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:35,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:35,556 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:35,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:46:35,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-09 06:46:35,758 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:35,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1596898656, now seen corresponding path program 1 times [2025-03-09 06:46:35,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:35,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152985927] [2025-03-09 06:46:35,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:35,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:35,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:35,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:35,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:46:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:35,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152985927] [2025-03-09 06:46:35,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152985927] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:46:35,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214177604] [2025-03-09 06:46:35,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:35,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:46:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:46:35,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:46:35,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:46:35,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:35,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:35,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:35,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:35,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:46:35,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:46:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:46:35,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:46:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:46:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214177604] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:46:35,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:46:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:46:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463256172] [2025-03-09 06:46:35,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:46:35,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:46:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:35,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:46:35,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:46:35,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-09 06:46:35,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 206 transitions, 2876 flow. Second operand has 12 states, 12 states have (on average 38.75) internal successors, (465), 12 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:35,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:35,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-09 06:46:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand