./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 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/unwind3-100.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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:48:34,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:48:34,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:48:34,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:48:34,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:48:34,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:48:34,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:48:34,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:48:34,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:48:34,259 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:48:34,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:48:34,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:48:34,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:48:34,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:48:34,259 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:48:34,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:48:34,260 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:48:34,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:34,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:48:34,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:48:34,261 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 -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2025-03-17 19:48:34,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:48:34,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:48:34,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:48:34,479 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:48:34,479 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:48:34,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2025-03-17 19:48:35,599 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1943f2747/1f5e1712e36a472ca46d057b4a4ffefc/FLAGc4da17a79 [2025-03-17 19:48:35,859 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:48:35,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2025-03-17 19:48:35,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1943f2747/1f5e1712e36a472ca46d057b4a4ffefc/FLAGc4da17a79 [2025-03-17 19:48:35,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1943f2747/1f5e1712e36a472ca46d057b4a4ffefc [2025-03-17 19:48:35,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:48:35,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:48:35,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:35,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:48:35,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:48:35,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:35" (1/1) ... [2025-03-17 19:48:35,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4fb8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:35, skipping insertion in model container [2025-03-17 19:48:35,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:35" (1/1) ... [2025-03-17 19:48:35,916 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:48:36,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:36,186 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:48:36,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:36,255 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:48:36,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36 WrapperNode [2025-03-17 19:48:36,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:36,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:36,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:48:36,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:48:36,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,280 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2025-03-17 19:48:36,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:36,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:48:36,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:48:36,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:48:36,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,293 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]. [2025-03-17 19:48:36,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,296 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:48:36,300 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:48:36,300 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:48:36,300 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:48:36,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (1/1) ... [2025-03-17 19:48:36,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:36,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:36,325 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) [2025-03-17 19:48:36,332 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 [2025-03-17 19:48:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:48:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-17 19:48:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-17 19:48:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-17 19:48:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-17 19:48:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:48:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:48:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:48:36,349 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:48:36,448 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:48:36,449 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:48:36,578 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:48:36,578 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:48:36,651 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:48:36,652 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:48:36,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:36 BoogieIcfgContainer [2025-03-17 19:48:36,652 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:48:36,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:48:36,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:48:36,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:48:36,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:48:35" (1/3) ... [2025-03-17 19:48:36,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bceb8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:36, skipping insertion in model container [2025-03-17 19:48:36,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:36" (2/3) ... [2025-03-17 19:48:36,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bceb8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:36, skipping insertion in model container [2025-03-17 19:48:36,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:36" (3/3) ... [2025-03-17 19:48:36,661 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2025-03-17 19:48:36,672 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:48:36,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-100.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-17 19:48:36,673 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:48:36,706 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-03-17 19:48:36,761 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-03-17 19:48:36,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:36,766 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. [2025-03-17 19:48:36,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-03-17 19:48:36,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-03-17 19:48:36,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:36,780 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;@7fe553a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:36,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-17 19:48:36,784 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:36,784 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:36,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:36,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:36,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:36,787 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)] === [2025-03-17 19:48:36,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash 998230392, now seen corresponding path program 1 times [2025-03-17 19:48:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:36,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134230755] [2025-03-17 19:48:36,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:36,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:36,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:36,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:36,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:36,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134230755] [2025-03-17 19:48:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134230755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:36,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:36,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59351903] [2025-03-17 19:48:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:36,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:36,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:36,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:37,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-17 19:48:37,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 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) [2025-03-17 19:48:37,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:37,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-17 19:48:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:37,153 INFO L124 PetriNetUnfolderBase]: 92/230 cut-off events. [2025-03-17 19:48:37,153 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 19:48:37,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 230 events. 92/230 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1018 event pairs, 11 based on Foata normal form. 25/229 useless extension candidates. Maximal degree in co-relation 369. Up to 140 conditions per place. [2025-03-17 19:48:37,156 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 26 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2025-03-17 19:48:37,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 150 flow [2025-03-17 19:48:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:48:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:48:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-03-17 19:48:37,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2025-03-17 19:48:37,171 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 97 transitions. [2025-03-17 19:48:37,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 150 flow [2025-03-17 19:48:37,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:37,178 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2025-03-17 19:48:37,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2025-03-17 19:48:37,185 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2025-03-17 19:48:37,185 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2025-03-17 19:48:37,185 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) [2025-03-17 19:48:37,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:37,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:37,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:48:37,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash 998230335, now seen corresponding path program 1 times [2025-03-17 19:48:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208046579] [2025-03-17 19:48:37,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:37,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:37,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:37,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:37,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208046579] [2025-03-17 19:48:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208046579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:48:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139055834] [2025-03-17 19:48:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:37,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:37,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:37,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:37,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2025-03-17 19:48:37,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:37,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:37,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2025-03-17 19:48:37,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:37,317 INFO L124 PetriNetUnfolderBase]: 61/182 cut-off events. [2025-03-17 19:48:37,317 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-17 19:48:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 182 events. 61/182 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 815 event pairs, 18 based on Foata normal form. 4/163 useless extension candidates. Maximal degree in co-relation 278. Up to 114 conditions per place. [2025-03-17 19:48:37,319 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2025-03-17 19:48:37,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 124 flow [2025-03-17 19:48:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-03-17 19:48:37,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-17 19:48:37,320 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 66 transitions. [2025-03-17 19:48:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 124 flow [2025-03-17 19:48:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:37,322 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2025-03-17 19:48:37,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2025-03-17 19:48:37,322 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-03-17 19:48:37,322 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2025-03-17 19:48:37,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:37,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:37,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:37,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:48:37,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:37,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 880371243, now seen corresponding path program 1 times [2025-03-17 19:48:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847319376] [2025-03-17 19:48:37,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:37,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:37,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:37,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:37,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847319376] [2025-03-17 19:48:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847319376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926372533] [2025-03-17 19:48:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:37,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:37,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:37,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:37,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-17 19:48:37,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 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) [2025-03-17 19:48:37,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:37,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-17 19:48:37,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:37,525 INFO L124 PetriNetUnfolderBase]: 61/170 cut-off events. [2025-03-17 19:48:37,525 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:48:37,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 170 events. 61/170 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 686 event pairs, 6 based on Foata normal form. 13/176 useless extension candidates. Maximal degree in co-relation 282. Up to 60 conditions per place. [2025-03-17 19:48:37,526 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 3/47 dead transitions. [2025-03-17 19:48:37,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2025-03-17 19:48:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:48:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:48:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2025-03-17 19:48:37,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-03-17 19:48:37,527 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 105 transitions. [2025-03-17 19:48:37,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2025-03-17 19:48:37,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:37,528 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 73 flow [2025-03-17 19:48:37,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2025-03-17 19:48:37,529 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2025-03-17 19:48:37,529 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 73 flow [2025-03-17 19:48:37,529 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) [2025-03-17 19:48:37,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:37,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:37,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:48:37,530 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)] === [2025-03-17 19:48:37,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash 881242166, now seen corresponding path program 1 times [2025-03-17 19:48:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648755953] [2025-03-17 19:48:37,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:37,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:37,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:37,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:37,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648755953] [2025-03-17 19:48:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648755953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651224495] [2025-03-17 19:48:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:37,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:37,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:37,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:37,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2025-03-17 19:48:37,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:37,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2025-03-17 19:48:37,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:37,640 INFO L124 PetriNetUnfolderBase]: 46/135 cut-off events. [2025-03-17 19:48:37,640 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-17 19:48:37,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 135 events. 46/135 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 503 event pairs, 11 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 264. Up to 81 conditions per place. [2025-03-17 19:48:37,643 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2025-03-17 19:48:37,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 122 flow [2025-03-17 19:48:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-17 19:48:37,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-03-17 19:48:37,644 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 73 flow. Second operand 4 states and 69 transitions. [2025-03-17 19:48:37,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 122 flow [2025-03-17 19:48:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:37,645 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 68 flow [2025-03-17 19:48:37,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-17 19:48:37,647 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-17 19:48:37,648 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 68 flow [2025-03-17 19:48:37,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:37,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:37,648 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:37,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:48:37,648 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)] === [2025-03-17 19:48:37,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -73515993, now seen corresponding path program 1 times [2025-03-17 19:48:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208533235] [2025-03-17 19:48:37,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:37,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:48:37,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:48:37,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:37,660 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:48:37,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:48:37,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:48:37,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:37,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:48:37,683 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:48:37,684 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-03-17 19:48:37,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-03-17 19:48:37,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-03-17 19:48:37,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-03-17 19:48:37,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-03-17 19:48:37,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-03-17 19:48:37,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-03-17 19:48:37,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:48:37,687 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:48:37,690 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:48:37,690 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:48:37,709 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:37,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2025-03-17 19:48:37,715 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2025-03-17 19:48:37,716 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:48:37,716 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. [2025-03-17 19:48:37,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2025-03-17 19:48:37,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2025-03-17 19:48:37,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:37,718 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;@7fe553a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:37,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-17 19:48:37,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:37,720 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:37,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:37,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:37,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:37,721 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)] === [2025-03-17 19:48:37,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1935740640, now seen corresponding path program 1 times [2025-03-17 19:48:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548693403] [2025-03-17 19:48:37,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:37,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:37,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:37,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:37,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:37,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548693403] [2025-03-17 19:48:37,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548693403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:37,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:37,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:37,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327297217] [2025-03-17 19:48:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:37,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:37,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:37,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:37,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:37,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 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) [2025-03-17 19:48:37,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:38,025 INFO L124 PetriNetUnfolderBase]: 962/1743 cut-off events. [2025-03-17 19:48:38,026 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-17 19:48:38,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 1743 events. 962/1743 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10103 event pairs, 103 based on Foata normal form. 151/1720 useless extension candidates. Maximal degree in co-relation 2913. Up to 654 conditions per place. [2025-03-17 19:48:38,035 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 61 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2025-03-17 19:48:38,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 331 flow [2025-03-17 19:48:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-03-17 19:48:38,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2025-03-17 19:48:38,038 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 6 states and 206 transitions. [2025-03-17 19:48:38,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 331 flow [2025-03-17 19:48:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:38,039 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 135 flow [2025-03-17 19:48:38,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2025-03-17 19:48:38,040 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2025-03-17 19:48:38,040 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 135 flow [2025-03-17 19:48:38,040 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) [2025-03-17 19:48:38,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:48:38,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:38,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1935740697, now seen corresponding path program 1 times [2025-03-17 19:48:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177889017] [2025-03-17 19:48:38,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:38,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:38,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177889017] [2025-03-17 19:48:38,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177889017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:48:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707180662] [2025-03-17 19:48:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:38,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:38,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:38,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:38,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:38,208 INFO L124 PetriNetUnfolderBase]: 694/1556 cut-off events. [2025-03-17 19:48:38,208 INFO L125 PetriNetUnfolderBase]: For 482/482 co-relation queries the response was YES. [2025-03-17 19:48:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 1556 events. 694/1556 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10652 event pairs, 479 based on Foata normal form. 4/1345 useless extension candidates. Maximal degree in co-relation 2344. Up to 1137 conditions per place. [2025-03-17 19:48:38,215 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2025-03-17 19:48:38,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 221 flow [2025-03-17 19:48:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-03-17 19:48:38,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2025-03-17 19:48:38,217 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 135 flow. Second operand 3 states and 107 transitions. [2025-03-17 19:48:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 221 flow [2025-03-17 19:48:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:38,222 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 155 flow [2025-03-17 19:48:38,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-03-17 19:48:38,222 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2025-03-17 19:48:38,223 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 155 flow [2025-03-17 19:48:38,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:38,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:48:38,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:38,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 121582520, now seen corresponding path program 1 times [2025-03-17 19:48:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845797121] [2025-03-17 19:48:38,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:38,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:38,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845797121] [2025-03-17 19:48:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845797121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361208478] [2025-03-17 19:48:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:38,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:38,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:38,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 155 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) [2025-03-17 19:48:38,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:38,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:38,445 INFO L124 PetriNetUnfolderBase]: 718/1356 cut-off events. [2025-03-17 19:48:38,445 INFO L125 PetriNetUnfolderBase]: For 656/733 co-relation queries the response was YES. [2025-03-17 19:48:38,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1356 events. 718/1356 cut-off events. For 656/733 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7540 event pairs, 128 based on Foata normal form. 89/1393 useless extension candidates. Maximal degree in co-relation 2980. Up to 633 conditions per place. [2025-03-17 19:48:38,452 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 61 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2025-03-17 19:48:38,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 403 flow [2025-03-17 19:48:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2025-03-17 19:48:38,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2025-03-17 19:48:38,454 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 155 flow. Second operand 6 states and 201 transitions. [2025-03-17 19:48:38,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 403 flow [2025-03-17 19:48:38,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:38,458 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 171 flow [2025-03-17 19:48:38,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2025-03-17 19:48:38,459 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2025-03-17 19:48:38,459 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 171 flow [2025-03-17 19:48:38,459 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) [2025-03-17 19:48:38,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:48:38,459 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)] === [2025-03-17 19:48:38,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 122430603, now seen corresponding path program 1 times [2025-03-17 19:48:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880115633] [2025-03-17 19:48:38,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:38,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:38,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880115633] [2025-03-17 19:48:38,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880115633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434442452] [2025-03-17 19:48:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:38,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:38,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2025-03-17 19:48:38,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:38,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2025-03-17 19:48:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:38,619 INFO L124 PetriNetUnfolderBase]: 689/1480 cut-off events. [2025-03-17 19:48:38,619 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2025-03-17 19:48:38,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1480 events. 689/1480 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9713 event pairs, 476 based on Foata normal form. 1/1321 useless extension candidates. Maximal degree in co-relation 2054. Up to 1122 conditions per place. [2025-03-17 19:48:38,626 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 31 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2025-03-17 19:48:38,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 257 flow [2025-03-17 19:48:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-17 19:48:38,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2025-03-17 19:48:38,627 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 171 flow. Second operand 4 states and 114 transitions. [2025-03-17 19:48:38,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 257 flow [2025-03-17 19:48:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 241 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:38,630 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 161 flow [2025-03-17 19:48:38,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2025-03-17 19:48:38,631 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2025-03-17 19:48:38,631 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 161 flow [2025-03-17 19:48:38,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:38,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:48:38,631 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)] === [2025-03-17 19:48:38,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -973907694, now seen corresponding path program 1 times [2025-03-17 19:48:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989663038] [2025-03-17 19:48:38,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:38,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:38,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989663038] [2025-03-17 19:48:38,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989663038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:38,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524923012] [2025-03-17 19:48:38,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:38,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:38,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 161 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) [2025-03-17 19:48:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:38,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:38,772 INFO L124 PetriNetUnfolderBase]: 654/1487 cut-off events. [2025-03-17 19:48:38,772 INFO L125 PetriNetUnfolderBase]: For 693/727 co-relation queries the response was YES. [2025-03-17 19:48:38,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1487 events. 654/1487 cut-off events. For 693/727 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10161 event pairs, 206 based on Foata normal form. 43/1394 useless extension candidates. Maximal degree in co-relation 1911. Up to 765 conditions per place. [2025-03-17 19:48:38,784 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 41 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-03-17 19:48:38,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 317 flow [2025-03-17 19:48:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-03-17 19:48:38,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2025-03-17 19:48:38,786 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 161 flow. Second operand 4 states and 135 transitions. [2025-03-17 19:48:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 317 flow [2025-03-17 19:48:38,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:38,788 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 157 flow [2025-03-17 19:48:38,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2025-03-17 19:48:38,790 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-17 19:48:38,790 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 157 flow [2025-03-17 19:48:38,790 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) [2025-03-17 19:48:38,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,790 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:48:38,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:38,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash -973907413, now seen corresponding path program 1 times [2025-03-17 19:48:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508040626] [2025-03-17 19:48:38,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:38,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:38,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508040626] [2025-03-17 19:48:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508040626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:38,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631889423] [2025-03-17 19:48:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:38,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:38,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:38,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:38,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 157 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) [2025-03-17 19:48:38,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:38,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,036 INFO L124 PetriNetUnfolderBase]: 914/1675 cut-off events. [2025-03-17 19:48:39,037 INFO L125 PetriNetUnfolderBase]: For 880/914 co-relation queries the response was YES. [2025-03-17 19:48:39,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1675 events. 914/1675 cut-off events. For 880/914 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9703 event pairs, 102 based on Foata normal form. 52/1702 useless extension candidates. Maximal degree in co-relation 2429. Up to 485 conditions per place. [2025-03-17 19:48:39,044 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 61 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2025-03-17 19:48:39,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 427 flow [2025-03-17 19:48:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2025-03-17 19:48:39,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2025-03-17 19:48:39,046 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 157 flow. Second operand 6 states and 198 transitions. [2025-03-17 19:48:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 427 flow [2025-03-17 19:48:39,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:39,052 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 214 flow [2025-03-17 19:48:39,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2025-03-17 19:48:39,052 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-17 19:48:39,053 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 214 flow [2025-03-17 19:48:39,053 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) [2025-03-17 19:48:39,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:48:39,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:39,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash -126367259, now seen corresponding path program 1 times [2025-03-17 19:48:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655460516] [2025-03-17 19:48:39,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:39,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:39,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655460516] [2025-03-17 19:48:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655460516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826643976] [2025-03-17 19:48:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:39,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:39,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:39,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 214 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) [2025-03-17 19:48:39,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:39,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,207 INFO L124 PetriNetUnfolderBase]: 734/1643 cut-off events. [2025-03-17 19:48:39,207 INFO L125 PetriNetUnfolderBase]: For 2039/2141 co-relation queries the response was YES. [2025-03-17 19:48:39,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 1643 events. 734/1643 cut-off events. For 2039/2141 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11567 event pairs, 153 based on Foata normal form. 41/1609 useless extension candidates. Maximal degree in co-relation 2791. Up to 1060 conditions per place. [2025-03-17 19:48:39,214 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2025-03-17 19:48:39,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 437 flow [2025-03-17 19:48:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-17 19:48:39,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-03-17 19:48:39,215 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 214 flow. Second operand 4 states and 136 transitions. [2025-03-17 19:48:39,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 437 flow [2025-03-17 19:48:39,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 432 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:39,220 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 225 flow [2025-03-17 19:48:39,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2025-03-17 19:48:39,220 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2025-03-17 19:48:39,220 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 225 flow [2025-03-17 19:48:39,220 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) [2025-03-17 19:48:39,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,220 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:48:39,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:39,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,221 INFO L85 PathProgramCache]: Analyzing trace with hash -126358508, now seen corresponding path program 1 times [2025-03-17 19:48:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502284330] [2025-03-17 19:48:39,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:39,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:39,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502284330] [2025-03-17 19:48:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502284330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848325735] [2025-03-17 19:48:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:39,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:39,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:39,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 225 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) [2025-03-17 19:48:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,440 INFO L124 PetriNetUnfolderBase]: 828/1561 cut-off events. [2025-03-17 19:48:39,441 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2025-03-17 19:48:39,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 1561 events. 828/1561 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9123 event pairs, 180 based on Foata normal form. 52/1588 useless extension candidates. Maximal degree in co-relation 2726. Up to 764 conditions per place. [2025-03-17 19:48:39,446 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2025-03-17 19:48:39,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 487 flow [2025-03-17 19:48:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2025-03-17 19:48:39,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2025-03-17 19:48:39,447 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 225 flow. Second operand 6 states and 196 transitions. [2025-03-17 19:48:39,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 487 flow [2025-03-17 19:48:39,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 461 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:39,452 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 222 flow [2025-03-17 19:48:39,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2025-03-17 19:48:39,453 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2025-03-17 19:48:39,453 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 222 flow [2025-03-17 19:48:39,453 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) [2025-03-17 19:48:39,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:48:39,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:39,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -125547167, now seen corresponding path program 1 times [2025-03-17 19:48:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151484976] [2025-03-17 19:48:39,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:39,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:39,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151484976] [2025-03-17 19:48:39,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151484976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767702143] [2025-03-17 19:48:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:39,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:39,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2025-03-17 19:48:39,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2025-03-17 19:48:39,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,681 INFO L124 PetriNetUnfolderBase]: 1364/2703 cut-off events. [2025-03-17 19:48:39,681 INFO L125 PetriNetUnfolderBase]: For 3469/3545 co-relation queries the response was YES. [2025-03-17 19:48:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 2703 events. 1364/2703 cut-off events. For 3469/3545 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18593 event pairs, 914 based on Foata normal form. 104/2696 useless extension candidates. Maximal degree in co-relation 4121. Up to 1602 conditions per place. [2025-03-17 19:48:39,693 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-17 19:48:39,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 568 flow [2025-03-17 19:48:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-17 19:48:39,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2025-03-17 19:48:39,695 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 222 flow. Second operand 4 states and 145 transitions. [2025-03-17 19:48:39,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 568 flow [2025-03-17 19:48:39,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 539 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:39,700 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 229 flow [2025-03-17 19:48:39,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-03-17 19:48:39,701 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2025-03-17 19:48:39,701 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 229 flow [2025-03-17 19:48:39,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,701 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:48:39,701 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:39,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1179843300, now seen corresponding path program 1 times [2025-03-17 19:48:39,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458899656] [2025-03-17 19:48:39,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:48:39,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:48:39,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:39,709 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:48:39,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:48:39,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:48:39,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:39,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:48:39,716 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-03-17 19:48:39,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-03-17 19:48:39,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-03-17 19:48:39,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-03-17 19:48:39,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:48:39,718 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,719 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:48:39,719 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:48:39,744 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:39,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2025-03-17 19:48:39,756 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2025-03-17 19:48:39,756 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 19:48:39,756 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 371 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. [2025-03-17 19:48:39,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2025-03-17 19:48:39,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2025-03-17 19:48:39,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:39,758 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;@7fe553a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:39,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-17 19:48:39,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:39,761 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:39,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:39,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,761 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)] === [2025-03-17 19:48:39,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 587129628, now seen corresponding path program 1 times [2025-03-17 19:48:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143532820] [2025-03-17 19:48:39,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:39,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:39,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143532820] [2025-03-17 19:48:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143532820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995975322] [2025-03-17 19:48:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:39,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:39,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:39,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 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) [2025-03-17 19:48:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,361 INFO L124 PetriNetUnfolderBase]: 6854/10448 cut-off events. [2025-03-17 19:48:40,361 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2025-03-17 19:48:40,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20682 conditions, 10448 events. 6854/10448 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 66521 event pairs, 914 based on Foata normal form. 690/10383 useless extension candidates. Maximal degree in co-relation 13215. Up to 3601 conditions per place. [2025-03-17 19:48:40,393 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-03-17 19:48:40,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 444 flow [2025-03-17 19:48:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:40,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2025-03-17 19:48:40,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-17 19:48:40,394 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 6 states and 279 transitions. [2025-03-17 19:48:40,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 444 flow [2025-03-17 19:48:40,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 432 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:40,396 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 179 flow [2025-03-17 19:48:40,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2025-03-17 19:48:40,398 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2025-03-17 19:48:40,398 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 179 flow [2025-03-17 19:48:40,398 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) [2025-03-17 19:48:40,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,398 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:48:40,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:40,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 587129123, now seen corresponding path program 1 times [2025-03-17 19:48:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671947816] [2025-03-17 19:48:40,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:40,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:40,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671947816] [2025-03-17 19:48:40,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671947816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:48:40,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648486112] [2025-03-17 19:48:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:40,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:40,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:40,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:40,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:40,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,946 INFO L124 PetriNetUnfolderBase]: 5199/9942 cut-off events. [2025-03-17 19:48:40,946 INFO L125 PetriNetUnfolderBase]: For 4019/4109 co-relation queries the response was YES. [2025-03-17 19:48:40,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21276 conditions, 9942 events. 5199/9942 cut-off events. For 4019/4109 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 83032 event pairs, 4027 based on Foata normal form. 64/8582 useless extension candidates. Maximal degree in co-relation 12824. Up to 7532 conditions per place. [2025-03-17 19:48:40,993 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 37 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-03-17 19:48:40,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 279 flow [2025-03-17 19:48:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2025-03-17 19:48:40,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6575342465753424 [2025-03-17 19:48:40,994 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 179 flow. Second operand 3 states and 144 transitions. [2025-03-17 19:48:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 279 flow [2025-03-17 19:48:41,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:41,008 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 199 flow [2025-03-17 19:48:41,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2025-03-17 19:48:41,008 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2025-03-17 19:48:41,008 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 199 flow [2025-03-17 19:48:41,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,009 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 19:48:41,009 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:41,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1021149587, now seen corresponding path program 1 times [2025-03-17 19:48:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053654588] [2025-03-17 19:48:41,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:41,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:41,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053654588] [2025-03-17 19:48:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053654588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319945146] [2025-03-17 19:48:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:41,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:41,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:41,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:41,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 199 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) [2025-03-17 19:48:41,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:41,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,492 INFO L124 PetriNetUnfolderBase]: 5448/8477 cut-off events. [2025-03-17 19:48:41,492 INFO L125 PetriNetUnfolderBase]: For 4406/4913 co-relation queries the response was YES. [2025-03-17 19:48:41,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20557 conditions, 8477 events. 5448/8477 cut-off events. For 4406/4913 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 53379 event pairs, 1178 based on Foata normal form. 429/8745 useless extension candidates. Maximal degree in co-relation 20444. Up to 4245 conditions per place. [2025-03-17 19:48:41,518 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 77 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2025-03-17 19:48:41,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 532 flow [2025-03-17 19:48:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2025-03-17 19:48:41,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2025-03-17 19:48:41,519 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 199 flow. Second operand 6 states and 271 transitions. [2025-03-17 19:48:41,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 532 flow [2025-03-17 19:48:41,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:41,522 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 227 flow [2025-03-17 19:48:41,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-03-17 19:48:41,523 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2025-03-17 19:48:41,523 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 227 flow [2025-03-17 19:48:41,523 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) [2025-03-17 19:48:41,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:48:41,523 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)] === [2025-03-17 19:48:41,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1021971851, now seen corresponding path program 1 times [2025-03-17 19:48:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959026661] [2025-03-17 19:48:41,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:41,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:41,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959026661] [2025-03-17 19:48:41,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959026661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433107075] [2025-03-17 19:48:41,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:41,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:41,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-17 19:48:41,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-17 19:48:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,937 INFO L124 PetriNetUnfolderBase]: 5194/9913 cut-off events. [2025-03-17 19:48:41,938 INFO L125 PetriNetUnfolderBase]: For 7045/7135 co-relation queries the response was YES. [2025-03-17 19:48:41,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22891 conditions, 9913 events. 5194/9913 cut-off events. For 7045/7135 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 82620 event pairs, 4024 based on Foata normal form. 61/8702 useless extension candidates. Maximal degree in co-relation 10057. Up to 7517 conditions per place. [2025-03-17 19:48:41,967 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 39 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-03-17 19:48:41,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 329 flow [2025-03-17 19:48:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2025-03-17 19:48:41,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5273972602739726 [2025-03-17 19:48:41,969 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 227 flow. Second operand 4 states and 154 transitions. [2025-03-17 19:48:41,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 329 flow [2025-03-17 19:48:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 319 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:41,981 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 222 flow [2025-03-17 19:48:41,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2025-03-17 19:48:41,982 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-17 19:48:41,982 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 222 flow [2025-03-17 19:48:41,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,982 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:48:41,982 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)] === [2025-03-17 19:48:41,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1217622962, now seen corresponding path program 1 times [2025-03-17 19:48:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275802169] [2025-03-17 19:48:41,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:41,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:41,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275802169] [2025-03-17 19:48:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275802169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:42,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:42,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427349502] [2025-03-17 19:48:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:42,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:42,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:42,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:42,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:42,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 222 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) [2025-03-17 19:48:42,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:42,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:42,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:42,410 INFO L124 PetriNetUnfolderBase]: 4929/9142 cut-off events. [2025-03-17 19:48:42,411 INFO L125 PetriNetUnfolderBase]: For 5926/6194 co-relation queries the response was YES. [2025-03-17 19:48:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20922 conditions, 9142 events. 4929/9142 cut-off events. For 5926/6194 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 74712 event pairs, 1612 based on Foata normal form. 292/8401 useless extension candidates. Maximal degree in co-relation 9182. Up to 4967 conditions per place. [2025-03-17 19:48:42,441 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 56 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2025-03-17 19:48:42,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 78 transitions, 452 flow [2025-03-17 19:48:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-03-17 19:48:42,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-17 19:48:42,443 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 222 flow. Second operand 4 states and 186 transitions. [2025-03-17 19:48:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 78 transitions, 452 flow [2025-03-17 19:48:42,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:42,450 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 218 flow [2025-03-17 19:48:42,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2025-03-17 19:48:42,451 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2025-03-17 19:48:42,451 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 218 flow [2025-03-17 19:48:42,451 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) [2025-03-17 19:48:42,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:42,451 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:42,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:48:42,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:42,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1217623019, now seen corresponding path program 1 times [2025-03-17 19:48:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127935985] [2025-03-17 19:48:42,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:42,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:42,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:42,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:42,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127935985] [2025-03-17 19:48:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127935985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:42,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:42,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979972664] [2025-03-17 19:48:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:42,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:42,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:42,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:42,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:42,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 218 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) [2025-03-17 19:48:42,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:42,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:42,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:43,385 INFO L124 PetriNetUnfolderBase]: 9554/15111 cut-off events. [2025-03-17 19:48:43,385 INFO L125 PetriNetUnfolderBase]: For 9589/9980 co-relation queries the response was YES. [2025-03-17 19:48:43,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37101 conditions, 15111 events. 9554/15111 cut-off events. For 9589/9980 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 107850 event pairs, 1828 based on Foata normal form. 442/15287 useless extension candidates. Maximal degree in co-relation 20374. Up to 5319 conditions per place. [2025-03-17 19:48:43,427 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 83 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2025-03-17 19:48:43,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 650 flow [2025-03-17 19:48:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2025-03-17 19:48:43,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2025-03-17 19:48:43,432 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 218 flow. Second operand 6 states and 271 transitions. [2025-03-17 19:48:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 650 flow [2025-03-17 19:48:43,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:43,461 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 347 flow [2025-03-17 19:48:43,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-17 19:48:43,462 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-03-17 19:48:43,462 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 347 flow [2025-03-17 19:48:43,462 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) [2025-03-17 19:48:43,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:43,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:43,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 19:48:43,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:43,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash -908393586, now seen corresponding path program 1 times [2025-03-17 19:48:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46814564] [2025-03-17 19:48:43,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:43,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:43,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:43,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:43,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46814564] [2025-03-17 19:48:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46814564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81400074] [2025-03-17 19:48:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:43,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:43,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:43,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:43,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:43,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 347 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) [2025-03-17 19:48:43,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:43,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:44,124 INFO L124 PetriNetUnfolderBase]: 8084/14663 cut-off events. [2025-03-17 19:48:44,124 INFO L125 PetriNetUnfolderBase]: For 20571/21567 co-relation queries the response was YES. [2025-03-17 19:48:44,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37270 conditions, 14663 events. 8084/14663 cut-off events. For 20571/21567 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 125971 event pairs, 4747 based on Foata normal form. 460/13518 useless extension candidates. Maximal degree in co-relation 22556. Up to 11574 conditions per place. [2025-03-17 19:48:44,172 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 64 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-03-17 19:48:44,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 620 flow [2025-03-17 19:48:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-03-17 19:48:44,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6404109589041096 [2025-03-17 19:48:44,173 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 347 flow. Second operand 4 states and 187 transitions. [2025-03-17 19:48:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 620 flow [2025-03-17 19:48:44,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:44,194 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 372 flow [2025-03-17 19:48:44,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2025-03-17 19:48:44,195 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2025-03-17 19:48:44,195 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 372 flow [2025-03-17 19:48:44,195 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) [2025-03-17 19:48:44,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:44,195 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:44,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 19:48:44,195 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -908391786, now seen corresponding path program 1 times [2025-03-17 19:48:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697120144] [2025-03-17 19:48:44,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:44,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:44,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:44,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:44,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697120144] [2025-03-17 19:48:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697120144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806795444] [2025-03-17 19:48:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:44,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:44,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:44,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:44,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:44,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 372 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) [2025-03-17 19:48:44,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:44,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:44,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:44,892 INFO L124 PetriNetUnfolderBase]: 9089/14462 cut-off events. [2025-03-17 19:48:44,892 INFO L125 PetriNetUnfolderBase]: For 20639/21366 co-relation queries the response was YES. [2025-03-17 19:48:44,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40309 conditions, 14462 events. 9089/14462 cut-off events. For 20639/21366 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 104044 event pairs, 2686 based on Foata normal form. 546/14755 useless extension candidates. Maximal degree in co-relation 22355. Up to 7322 conditions per place. [2025-03-17 19:48:45,028 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 87 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2025-03-17 19:48:45,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 778 flow [2025-03-17 19:48:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2025-03-17 19:48:45,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2025-03-17 19:48:45,029 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 372 flow. Second operand 6 states and 266 transitions. [2025-03-17 19:48:45,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 778 flow [2025-03-17 19:48:45,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 750 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:45,087 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 375 flow [2025-03-17 19:48:45,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=375, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2025-03-17 19:48:45,088 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2025-03-17 19:48:45,088 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 375 flow [2025-03-17 19:48:45,088 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) [2025-03-17 19:48:45,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:45,088 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:45,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 19:48:45,088 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:45,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash -907585411, now seen corresponding path program 1 times [2025-03-17 19:48:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206196764] [2025-03-17 19:48:45,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:45,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:45,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:45,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:45,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206196764] [2025-03-17 19:48:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206196764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430881643] [2025-03-17 19:48:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:45,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:45,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:45,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:45,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-17 19:48:45,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:45,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:45,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-17 19:48:45,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:46,533 INFO L124 PetriNetUnfolderBase]: 14083/24654 cut-off events. [2025-03-17 19:48:46,533 INFO L125 PetriNetUnfolderBase]: For 36447/38325 co-relation queries the response was YES. [2025-03-17 19:48:46,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62773 conditions, 24654 events. 14083/24654 cut-off events. For 36447/38325 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 216333 event pairs, 9207 based on Foata normal form. 1230/23975 useless extension candidates. Maximal degree in co-relation 27140. Up to 14727 conditions per place. [2025-03-17 19:48:46,669 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 103 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2025-03-17 19:48:46,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 1049 flow [2025-03-17 19:48:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-17 19:48:46,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815068493150684 [2025-03-17 19:48:46,670 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 375 flow. Second operand 4 states and 199 transitions. [2025-03-17 19:48:46,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 1049 flow [2025-03-17 19:48:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:46,764 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 391 flow [2025-03-17 19:48:46,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2025-03-17 19:48:46,764 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2025-03-17 19:48:46,764 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 391 flow [2025-03-17 19:48:46,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:46,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:46,765 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:46,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 19:48:46,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:46,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1036196376, now seen corresponding path program 1 times [2025-03-17 19:48:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357432909] [2025-03-17 19:48:46,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:46,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:46,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:46,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:46,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:46,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357432909] [2025-03-17 19:48:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357432909] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:46,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44776885] [2025-03-17 19:48:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:46,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:46,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:46,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:46,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:48:46,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:46,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:46,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:48:46,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:48,115 INFO L124 PetriNetUnfolderBase]: 16754/25740 cut-off events. [2025-03-17 19:48:48,115 INFO L125 PetriNetUnfolderBase]: For 41855/44217 co-relation queries the response was YES. [2025-03-17 19:48:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75256 conditions, 25740 events. 16754/25740 cut-off events. For 41855/44217 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 190941 event pairs, 2800 based on Foata normal form. 500/26033 useless extension candidates. Maximal degree in co-relation 74604. Up to 8407 conditions per place. [2025-03-17 19:48:48,245 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 165 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2025-03-17 19:48:48,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 208 transitions, 1393 flow [2025-03-17 19:48:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:48:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:48:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2025-03-17 19:48:48,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2025-03-17 19:48:48,247 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 391 flow. Second operand 10 states and 445 transitions. [2025-03-17 19:48:48,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 208 transitions, 1393 flow [2025-03-17 19:48:48,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 208 transitions, 1377 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:48,422 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 549 flow [2025-03-17 19:48:48,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=549, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2025-03-17 19:48:48,422 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2025-03-17 19:48:48,422 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 549 flow [2025-03-17 19:48:48,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:48,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:48,423 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:48,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 19:48:48,423 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)] === [2025-03-17 19:48:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 689524622, now seen corresponding path program 1 times [2025-03-17 19:48:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40328463] [2025-03-17 19:48:48,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:48,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:48,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:48,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:48,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:48,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40328463] [2025-03-17 19:48:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40328463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:48,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:48,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:48,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905332340] [2025-03-17 19:48:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:48,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:48,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:48,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:48,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:48,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:48:48,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:48,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:48,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:48:48,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:49,824 INFO L124 PetriNetUnfolderBase]: 17543/26692 cut-off events. [2025-03-17 19:48:49,824 INFO L125 PetriNetUnfolderBase]: For 62194/64566 co-relation queries the response was YES. [2025-03-17 19:48:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83030 conditions, 26692 events. 17543/26692 cut-off events. For 62194/64566 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 195899 event pairs, 3028 based on Foata normal form. 342/26683 useless extension candidates. Maximal degree in co-relation 63126. Up to 9478 conditions per place. [2025-03-17 19:48:49,974 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 168 selfloop transitions, 31 changer transitions 0/216 dead transitions. [2025-03-17 19:48:49,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 1566 flow [2025-03-17 19:48:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:48:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:48:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 444 transitions. [2025-03-17 19:48:49,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6082191780821918 [2025-03-17 19:48:49,975 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 549 flow. Second operand 10 states and 444 transitions. [2025-03-17 19:48:49,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 1566 flow [2025-03-17 19:48:50,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 216 transitions, 1501 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-17 19:48:50,463 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 667 flow [2025-03-17 19:48:50,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=667, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2025-03-17 19:48:50,464 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2025-03-17 19:48:50,464 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 667 flow [2025-03-17 19:48:50,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:50,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:50,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:50,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 19:48:50,464 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:50,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1057525330, now seen corresponding path program 1 times [2025-03-17 19:48:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:50,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481003867] [2025-03-17 19:48:50,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:50,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:50,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:50,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:50,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:50,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:48:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481003867] [2025-03-17 19:48:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481003867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:50,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:48:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546771727] [2025-03-17 19:48:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:50,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:50,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:50,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:50,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-17 19:48:50,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:50,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:50,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-17 19:48:50,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:51,646 INFO L124 PetriNetUnfolderBase]: 14013/24806 cut-off events. [2025-03-17 19:48:51,646 INFO L125 PetriNetUnfolderBase]: For 64174/65192 co-relation queries the response was YES. [2025-03-17 19:48:51,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74334 conditions, 24806 events. 14013/24806 cut-off events. For 64174/65192 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 222468 event pairs, 8769 based on Foata normal form. 142/23301 useless extension candidates. Maximal degree in co-relation 61019. Up to 19868 conditions per place. [2025-03-17 19:48:51,786 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2025-03-17 19:48:51,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 994 flow [2025-03-17 19:48:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:48:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:48:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2025-03-17 19:48:51,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5260273972602739 [2025-03-17 19:48:51,787 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 667 flow. Second operand 5 states and 192 transitions. [2025-03-17 19:48:51,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 994 flow [2025-03-17 19:48:52,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 915 flow, removed 13 selfloop flow, removed 5 redundant places. [2025-03-17 19:48:52,101 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 606 flow [2025-03-17 19:48:52,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=606, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2025-03-17 19:48:52,101 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2025-03-17 19:48:52,101 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 606 flow [2025-03-17 19:48:52,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:52,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:52,101 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:52,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 19:48:52,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:52,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash 970874643, now seen corresponding path program 1 times [2025-03-17 19:48:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:52,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811038162] [2025-03-17 19:48:52,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:52,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:52,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:48:52,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:48:52,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:52,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811038162] [2025-03-17 19:48:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811038162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630851673] [2025-03-17 19:48:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:52,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:52,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:52,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:52,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:48:52,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 606 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) [2025-03-17 19:48:52,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:52,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:48:52,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:53,936 INFO L124 PetriNetUnfolderBase]: 17023/25870 cut-off events. [2025-03-17 19:48:53,936 INFO L125 PetriNetUnfolderBase]: For 64023/66604 co-relation queries the response was YES. [2025-03-17 19:48:54,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81045 conditions, 25870 events. 17023/25870 cut-off events. For 64023/66604 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 191058 event pairs, 3044 based on Foata normal form. 406/25985 useless extension candidates. Maximal degree in co-relation 80876. Up to 7325 conditions per place. [2025-03-17 19:48:54,107 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 203 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2025-03-17 19:48:54,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 249 transitions, 1783 flow [2025-03-17 19:48:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:48:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:48:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-17 19:48:54,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-17 19:48:54,109 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 606 flow. Second operand 12 states and 531 transitions. [2025-03-17 19:48:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 249 transitions, 1783 flow [2025-03-17 19:48:54,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 249 transitions, 1757 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:54,512 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 711 flow [2025-03-17 19:48:54,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=711, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2025-03-17 19:48:54,512 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2025-03-17 19:48:54,512 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 711 flow [2025-03-17 19:48:54,513 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) [2025-03-17 19:48:54,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:54,513 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:54,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 19:48:54,513 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)] === [2025-03-17 19:48:54,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1760614563, now seen corresponding path program 1 times [2025-03-17 19:48:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466474144] [2025-03-17 19:48:54,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:54,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:48:54,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:48:54,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:54,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466474144] [2025-03-17 19:48:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466474144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:54,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:54,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383300101] [2025-03-17 19:48:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:54,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:54,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:54,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:54,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:54,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:54,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:54,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:56,370 INFO L124 PetriNetUnfolderBase]: 22360/35299 cut-off events. [2025-03-17 19:48:56,370 INFO L125 PetriNetUnfolderBase]: For 86217/89381 co-relation queries the response was YES. [2025-03-17 19:48:56,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106973 conditions, 35299 events. 22360/35299 cut-off events. For 86217/89381 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 288209 event pairs, 4894 based on Foata normal form. 722/35468 useless extension candidates. Maximal degree in co-relation 88292. Up to 13479 conditions per place. [2025-03-17 19:48:56,555 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 119 selfloop transitions, 28 changer transitions 0/177 dead transitions. [2025-03-17 19:48:56,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 177 transitions, 1548 flow [2025-03-17 19:48:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 269 transitions. [2025-03-17 19:48:56,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6141552511415526 [2025-03-17 19:48:56,556 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 711 flow. Second operand 6 states and 269 transitions. [2025-03-17 19:48:56,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 177 transitions, 1548 flow [2025-03-17 19:48:57,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1460 flow, removed 12 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:57,201 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 980 flow [2025-03-17 19:48:57,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=980, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2025-03-17 19:48:57,201 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2025-03-17 19:48:57,202 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 980 flow [2025-03-17 19:48:57,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:57,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:57,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:57,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 19:48:57,202 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)] === [2025-03-17 19:48:57,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -99572895, now seen corresponding path program 1 times [2025-03-17 19:48:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367621389] [2025-03-17 19:48:57,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:57,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:48:57,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:48:57,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:57,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367621389] [2025-03-17 19:48:57,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367621389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:57,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:57,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:57,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249412981] [2025-03-17 19:48:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:57,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:57,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:57,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:57,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:48:57,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 980 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:48:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:59,206 INFO L124 PetriNetUnfolderBase]: 22670/35797 cut-off events. [2025-03-17 19:48:59,206 INFO L125 PetriNetUnfolderBase]: For 101732/105576 co-relation queries the response was YES. [2025-03-17 19:48:59,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114975 conditions, 35797 events. 22670/35797 cut-off events. For 101732/105576 co-relation queries the response was YES. Maximal size of possible extension queue 1941. Compared 292743 event pairs, 4330 based on Foata normal form. 794/36175 useless extension candidates. Maximal degree in co-relation 114798. Up to 9984 conditions per place. [2025-03-17 19:48:59,391 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 214 selfloop transitions, 39 changer transitions 0/271 dead transitions. [2025-03-17 19:48:59,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 271 transitions, 2207 flow [2025-03-17 19:48:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:48:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:48:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-17 19:48:59,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-17 19:48:59,392 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 980 flow. Second operand 12 states and 531 transitions. [2025-03-17 19:48:59,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 271 transitions, 2207 flow [2025-03-17 19:49:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 271 transitions, 2206 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:49:00,032 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 1112 flow [2025-03-17 19:49:00,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1112, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2025-03-17 19:49:00,032 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2025-03-17 19:49:00,032 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 1112 flow [2025-03-17 19:49:00,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:00,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:00,033 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:00,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 19:49:00,033 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:00,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1255514940, now seen corresponding path program 1 times [2025-03-17 19:49:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574639937] [2025-03-17 19:49:00,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:00,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:49:00,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:49:00,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:00,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574639937] [2025-03-17 19:49:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574639937] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:00,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:00,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:49:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661307918] [2025-03-17 19:49:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:00,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:49:00,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:00,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:00,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:00,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-17 19:49:00,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 1112 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:00,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:00,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-17 19:49:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:01,805 INFO L124 PetriNetUnfolderBase]: 18854/34357 cut-off events. [2025-03-17 19:49:01,805 INFO L125 PetriNetUnfolderBase]: For 116888/121423 co-relation queries the response was YES. [2025-03-17 19:49:01,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102712 conditions, 34357 events. 18854/34357 cut-off events. For 116888/121423 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 333099 event pairs, 4904 based on Foata normal form. 1715/35475 useless extension candidates. Maximal degree in co-relation 87250. Up to 24085 conditions per place. [2025-03-17 19:49:01,973 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 145 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2025-03-17 19:49:01,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 181 transitions, 2221 flow [2025-03-17 19:49:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:49:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:49:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-03-17 19:49:01,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2025-03-17 19:49:01,974 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 1112 flow. Second operand 4 states and 156 transitions. [2025-03-17 19:49:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 181 transitions, 2221 flow [2025-03-17 19:49:02,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 181 transitions, 2071 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-03-17 19:49:02,202 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 1044 flow [2025-03-17 19:49:02,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1044, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2025-03-17 19:49:02,203 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2025-03-17 19:49:02,203 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 1044 flow [2025-03-17 19:49:02,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:02,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:02,203 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:02,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 19:49:02,204 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)] === [2025-03-17 19:49:02,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1255523691, now seen corresponding path program 1 times [2025-03-17 19:49:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:02,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145177669] [2025-03-17 19:49:02,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:02,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:49:02,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:49:02,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:02,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:02,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:02,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145177669] [2025-03-17 19:49:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145177669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:02,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:02,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:02,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003538998] [2025-03-17 19:49:02,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:02,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:49:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:02,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:49:02,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:49:02,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:49:02,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:02,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:02,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:49:02,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:04,135 INFO L124 PetriNetUnfolderBase]: 21126/33736 cut-off events. [2025-03-17 19:49:04,136 INFO L125 PetriNetUnfolderBase]: For 95682/98126 co-relation queries the response was YES. [2025-03-17 19:49:04,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109637 conditions, 33736 events. 21126/33736 cut-off events. For 95682/98126 co-relation queries the response was YES. Maximal size of possible extension queue 1847. Compared 278584 event pairs, 6908 based on Foata normal form. 741/33925 useless extension candidates. Maximal degree in co-relation 92003. Up to 16521 conditions per place. [2025-03-17 19:49:04,295 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 129 selfloop transitions, 15 changer transitions 0/172 dead transitions. [2025-03-17 19:49:04,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1658 flow [2025-03-17 19:49:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:49:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:49:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2025-03-17 19:49:04,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2025-03-17 19:49:04,297 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 1044 flow. Second operand 6 states and 264 transitions. [2025-03-17 19:49:04,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1658 flow [2025-03-17 19:49:04,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 172 transitions, 1637 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:49:04,906 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 1057 flow [2025-03-17 19:49:04,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1057, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2025-03-17 19:49:04,906 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2025-03-17 19:49:04,906 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1057 flow [2025-03-17 19:49:04,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:04,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:04,906 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:04,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-17 19:49:04,907 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:04,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -335942170, now seen corresponding path program 1 times [2025-03-17 19:49:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618295048] [2025-03-17 19:49:04,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:04,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:49:04,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:49:04,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:04,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:04,912 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:49:04,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:49:04,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:49:04,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:04,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:49:04,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:49:04,918 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2025-03-17 19:49:04,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2025-03-17 19:49:04,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2025-03-17 19:49:04,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2025-03-17 19:49:04,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2025-03-17 19:49:04,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2025-03-17 19:49:04,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2025-03-17 19:49:04,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-17 19:49:04,920 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:04,920 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:49:04,920 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 19:49:04,948 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:49:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 93 transitions, 242 flow [2025-03-17 19:49:04,953 INFO L124 PetriNetUnfolderBase]: 5/131 cut-off events. [2025-03-17 19:49:04,953 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:49:04,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 489 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 155. Up to 10 conditions per place. [2025-03-17 19:49:04,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 93 transitions, 242 flow [2025-03-17 19:49:04,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 56 transitions, 143 flow [2025-03-17 19:49:04,954 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:49:04,955 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;@7fe553a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:49:04,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-03-17 19:49:04,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:49:04,955 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:49:04,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:49:04,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:04,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:04,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash -23094740, now seen corresponding path program 1 times [2025-03-17 19:49:04,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:04,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862997239] [2025-03-17 19:49:04,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:04,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:04,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:49:04,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:49:04,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:04,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862997239] [2025-03-17 19:49:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862997239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:04,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:04,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90167273] [2025-03-17 19:49:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:04,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:49:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:04,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:49:04,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:49:04,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-17 19:49:04,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:04,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:05,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-17 19:49:05,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:07,108 INFO L124 PetriNetUnfolderBase]: 39926/54564 cut-off events. [2025-03-17 19:49:07,109 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2025-03-17 19:49:07,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109783 conditions, 54564 events. 39926/54564 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 2277. Compared 349532 event pairs, 7002 based on Foata normal form. 2967/54420 useless extension candidates. Maximal degree in co-relation 49659. Up to 21801 conditions per place. [2025-03-17 19:49:07,369 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 91 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2025-03-17 19:49:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 549 flow [2025-03-17 19:49:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:49:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:49:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2025-03-17 19:49:07,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2025-03-17 19:49:07,370 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 143 flow. Second operand 6 states and 348 transitions. [2025-03-17 19:49:07,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 549 flow [2025-03-17 19:49:07,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 521 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-03-17 19:49:07,373 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 217 flow [2025-03-17 19:49:07,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2025-03-17 19:49:07,373 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2025-03-17 19:49:07,373 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 217 flow [2025-03-17 19:49:07,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:07,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:07,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:07,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-17 19:49:07,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:07,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -23094797, now seen corresponding path program 1 times [2025-03-17 19:49:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739958639] [2025-03-17 19:49:07,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:07,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:49:07,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:49:07,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:07,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:07,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:07,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739958639] [2025-03-17 19:49:07,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739958639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:07,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:07,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:49:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329016206] [2025-03-17 19:49:07,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:07,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:49:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:07,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:49:07,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:49:07,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-17 19:49:07,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:07,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:07,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-17 19:49:07,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:09,477 INFO L124 PetriNetUnfolderBase]: 31609/53983 cut-off events. [2025-03-17 19:49:09,478 INFO L125 PetriNetUnfolderBase]: For 26591/28547 co-relation queries the response was YES. [2025-03-17 19:49:09,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118238 conditions, 53983 events. 31609/53983 cut-off events. For 26591/28547 co-relation queries the response was YES. Maximal size of possible extension queue 2645. Compared 503778 event pairs, 25123 based on Foata normal form. 796/47438 useless extension candidates. Maximal degree in co-relation 65877. Up to 42282 conditions per place. [2025-03-17 19:49:09,790 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 43 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2025-03-17 19:49:09,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 329 flow [2025-03-17 19:49:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:49:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:49:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2025-03-17 19:49:09,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6487455197132617 [2025-03-17 19:49:09,791 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 217 flow. Second operand 3 states and 181 transitions. [2025-03-17 19:49:09,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 329 flow [2025-03-17 19:49:09,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:49:09,817 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 237 flow [2025-03-17 19:49:09,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2025-03-17 19:49:09,818 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2025-03-17 19:49:09,818 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 237 flow [2025-03-17 19:49:09,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:09,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:09,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:09,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-17 19:49:09,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:09,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash -715936558, now seen corresponding path program 1 times [2025-03-17 19:49:09,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:09,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542985541] [2025-03-17 19:49:09,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:09,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:09,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:49:09,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:49:09,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:09,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:09,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542985541] [2025-03-17 19:49:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542985541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:09,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:09,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202738284] [2025-03-17 19:49:09,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:09,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:49:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:09,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:49:09,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:49:09,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-17 19:49:09,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:09,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:09,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-17 19:49:09,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:11,487 INFO L124 PetriNetUnfolderBase]: 32732/44945 cut-off events. [2025-03-17 19:49:11,487 INFO L125 PetriNetUnfolderBase]: For 26306/28293 co-relation queries the response was YES. [2025-03-17 19:49:11,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113458 conditions, 44945 events. 32732/44945 cut-off events. For 26306/28293 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 285430 event pairs, 8114 based on Foata normal form. 1441/45783 useless extension candidates. Maximal degree in co-relation 113305. Up to 23569 conditions per place. [2025-03-17 19:49:11,712 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 90 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2025-03-17 19:49:11,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 124 transitions, 641 flow [2025-03-17 19:49:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:49:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:49:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2025-03-17 19:49:11,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2025-03-17 19:49:11,713 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 237 flow. Second operand 6 states and 339 transitions. [2025-03-17 19:49:11,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 124 transitions, 641 flow [2025-03-17 19:49:11,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 630 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:49:11,725 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 277 flow [2025-03-17 19:49:11,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2025-03-17 19:49:11,726 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-03-17 19:49:11,726 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 277 flow [2025-03-17 19:49:11,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:11,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:11,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:11,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-17 19:49:11,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -715101386, now seen corresponding path program 1 times [2025-03-17 19:49:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492097679] [2025-03-17 19:49:11,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:11,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:49:11,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:49:11,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:11,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492097679] [2025-03-17 19:49:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492097679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587912187] [2025-03-17 19:49:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:11,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:49:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:11,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:11,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:11,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 93 [2025-03-17 19:49:11,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:11,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:11,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 93 [2025-03-17 19:49:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:13,896 INFO L124 PetriNetUnfolderBase]: 31604/53703 cut-off events. [2025-03-17 19:49:13,896 INFO L125 PetriNetUnfolderBase]: For 40089/42045 co-relation queries the response was YES. [2025-03-17 19:49:13,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125186 conditions, 53703 events. 31604/53703 cut-off events. For 40089/42045 co-relation queries the response was YES. Maximal size of possible extension queue 2576. Compared 496514 event pairs, 25120 based on Foata normal form. 793/47892 useless extension candidates. Maximal degree in co-relation 57649. Up to 42267 conditions per place. [2025-03-17 19:49:14,114 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 46 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2025-03-17 19:49:14,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 393 flow [2025-03-17 19:49:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:49:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:49:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-03-17 19:49:14,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521505376344086 [2025-03-17 19:49:14,114 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 277 flow. Second operand 4 states and 194 transitions. [2025-03-17 19:49:14,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 393 flow [2025-03-17 19:49:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 382 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 19:49:14,137 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 271 flow [2025-03-17 19:49:14,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2025-03-17 19:49:14,137 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2025-03-17 19:49:14,137 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 271 flow [2025-03-17 19:49:14,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:14,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:14,137 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:14,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-17 19:49:14,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:14,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash 350240082, now seen corresponding path program 1 times [2025-03-17 19:49:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522678631] [2025-03-17 19:49:14,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:14,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:49:14,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:49:14,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:14,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:14,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:14,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522678631] [2025-03-17 19:49:14,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522678631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:14,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:14,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484365743] [2025-03-17 19:49:14,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:14,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:49:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:14,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:14,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:14,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-17 19:49:14,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:14,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:14,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-17 19:49:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:16,907 INFO L124 PetriNetUnfolderBase]: 30035/50880 cut-off events. [2025-03-17 19:49:16,907 INFO L125 PetriNetUnfolderBase]: For 38650/41134 co-relation queries the response was YES. [2025-03-17 19:49:16,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117109 conditions, 50880 events. 30035/50880 cut-off events. For 38650/41134 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 470388 event pairs, 9700 based on Foata normal form. 1592/47959 useless extension candidates. Maximal degree in co-relation 54299. Up to 27595 conditions per place. [2025-03-17 19:49:17,106 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 69 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2025-03-17 19:49:17,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 560 flow [2025-03-17 19:49:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:49:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:49:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2025-03-17 19:49:17,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2025-03-17 19:49:17,107 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 271 flow. Second operand 4 states and 237 transitions. [2025-03-17 19:49:17,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 560 flow [2025-03-17 19:49:17,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:49:17,135 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 267 flow [2025-03-17 19:49:17,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2025-03-17 19:49:17,135 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-03-17 19:49:17,135 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 267 flow [2025-03-17 19:49:17,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:17,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:17,135 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:17,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-17 19:49:17,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:17,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 350240363, now seen corresponding path program 1 times [2025-03-17 19:49:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028081516] [2025-03-17 19:49:17,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:17,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:49:17,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:49:17,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:17,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028081516] [2025-03-17 19:49:17,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028081516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461772562] [2025-03-17 19:49:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:17,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:49:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:17,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:49:17,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:49:17,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-17 19:49:17,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:17,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:17,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-17 19:49:17,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:21,420 INFO L124 PetriNetUnfolderBase]: 66192/92598 cut-off events. [2025-03-17 19:49:21,421 INFO L125 PetriNetUnfolderBase]: For 62845/65515 co-relation queries the response was YES. [2025-03-17 19:49:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234251 conditions, 92598 events. 66192/92598 cut-off events. For 62845/65515 co-relation queries the response was YES. Maximal size of possible extension queue 4144. Compared 667345 event pairs, 14835 based on Foata normal form. 2587/93285 useless extension candidates. Maximal degree in co-relation 122402. Up to 38068 conditions per place. [2025-03-17 19:49:22,009 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 98 selfloop transitions, 20 changer transitions 0/141 dead transitions. [2025-03-17 19:49:22,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 805 flow [2025-03-17 19:49:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:49:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:49:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2025-03-17 19:49:22,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2025-03-17 19:49:22,010 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 267 flow. Second operand 6 states and 340 transitions. [2025-03-17 19:49:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 805 flow [2025-03-17 19:49:22,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:49:22,192 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 439 flow [2025-03-17 19:49:22,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2025-03-17 19:49:22,192 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2025-03-17 19:49:22,192 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 439 flow [2025-03-17 19:49:22,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:22,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:22,193 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:22,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-17 19:49:22,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:22,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2027458997, now seen corresponding path program 1 times [2025-03-17 19:49:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:22,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938490557] [2025-03-17 19:49:22,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:22,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:49:22,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:49:22,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:22,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938490557] [2025-03-17 19:49:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938490557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987241005] [2025-03-17 19:49:22,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:22,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:49:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:22,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:22,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:22,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-17 19:49:22,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:22,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:22,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-17 19:49:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:27,054 INFO L124 PetriNetUnfolderBase]: 58078/95129 cut-off events. [2025-03-17 19:49:27,054 INFO L125 PetriNetUnfolderBase]: For 145946/152809 co-relation queries the response was YES. [2025-03-17 19:49:27,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247495 conditions, 95129 events. 58078/95129 cut-off events. For 145946/152809 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 907384 event pairs, 39953 based on Foata normal form. 3465/87929 useless extension candidates. Maximal degree in co-relation 135032. Up to 77640 conditions per place. [2025-03-17 19:49:27,535 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 74 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2025-03-17 19:49:27,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 102 transitions, 732 flow [2025-03-17 19:49:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:49:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:49:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2025-03-17 19:49:27,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2025-03-17 19:49:27,536 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 439 flow. Second operand 4 states and 235 transitions. [2025-03-17 19:49:27,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 102 transitions, 732 flow [2025-03-17 19:49:27,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 731 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:49:27,653 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 464 flow [2025-03-17 19:49:27,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2025-03-17 19:49:27,653 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2025-03-17 19:49:27,653 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 464 flow [2025-03-17 19:49:27,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:27,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:27,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:27,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-17 19:49:27,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-17 19:49:27,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2026651816, now seen corresponding path program 1 times [2025-03-17 19:49:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275450464] [2025-03-17 19:49:27,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:27,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:49:27,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:49:27,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:27,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:27,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275450464] [2025-03-17 19:49:27,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275450464] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:27,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:49:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468219696] [2025-03-17 19:49:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:27,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:49:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:27,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:49:27,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:49:27,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 93 [2025-03-17 19:49:27,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:27,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:27,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 93 [2025-03-17 19:49:27,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand