./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:16:07,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:16:07,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:16:07,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:16:07,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:16:07,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:16:07,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:16:07,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:16:07,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:16:07,681 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:16:07,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:16:07,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:16:07,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:16:07,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:16:07,681 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:16:07,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:16:07,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:16:07,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:16:07,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:16:07,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:16:07,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:16:07,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:16:07,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:16:07,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:16:07,684 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-02-08 14:16:07,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:16:07,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:16:07,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:16:07,967 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:16:07,967 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:16:07,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 14:16:09,303 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ee45ae4ad/3bdde1de71fb4b349d8ee908be657b07/FLAGd82998905 [2025-02-08 14:16:09,643 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:16:09,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 14:16:09,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ee45ae4ad/3bdde1de71fb4b349d8ee908be657b07/FLAGd82998905 [2025-02-08 14:16:09,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ee45ae4ad/3bdde1de71fb4b349d8ee908be657b07 [2025-02-08 14:16:09,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:16:09,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:16:09,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:16:09,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:16:09,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:16:09,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:16:09" (1/1) ... [2025-02-08 14:16:09,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:09, skipping insertion in model container [2025-02-08 14:16:09,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:16:09" (1/1) ... [2025-02-08 14:16:09,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:16:10,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:16:10,291 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:16:10,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:16:10,362 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:16:10,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10 WrapperNode [2025-02-08 14:16:10,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:16:10,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:16:10,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:16:10,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:16:10,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,397 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-02-08 14:16:10,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:16:10,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:16:10,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:16:10,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:16:10,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,432 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]. [2025-02-08 14:16:10,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:16:10,448 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:16:10,452 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:16:10,452 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:16:10,454 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (1/1) ... [2025-02-08 14:16:10,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:16:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:10,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:16:10,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:16:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:16:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 14:16:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 14:16:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 14:16:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 14:16:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:16:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:16:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:16:10,524 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:16:10,642 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:16:10,645 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:16:10,823 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:16:10,823 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:16:10,909 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:16:10,909 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:16:10,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:16:10 BoogieIcfgContainer [2025-02-08 14:16:10,909 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:16:10,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:16:10,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:16:10,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:16:10,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:16:09" (1/3) ... [2025-02-08 14:16:10,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672c076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:16:10, skipping insertion in model container [2025-02-08 14:16:10,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:16:10" (2/3) ... [2025-02-08 14:16:10,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672c076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:16:10, skipping insertion in model container [2025-02-08 14:16:10,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:16:10" (3/3) ... [2025-02-08 14:16:10,917 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-02-08 14:16:10,925 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:16:10,926 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:16:10,926 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:16:10,968 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:16:11,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-02-08 14:16:11,043 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-02-08 14:16:11,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:11,048 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. [2025-02-08 14:16:11,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-02-08 14:16:11,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-02-08 14:16:11,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:16:11,076 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;@7bf76d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:16:11,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-08 14:16:11,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:16:11,080 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:16:11,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:11,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:11,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:11,081 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)] === [2025-02-08 14:16:11,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2089181378, now seen corresponding path program 1 times [2025-02-08 14:16:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:11,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155843381] [2025-02-08 14:16:11,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:11,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:11,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:11,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:11,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155843381] [2025-02-08 14:16:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155843381] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:11,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:16:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628248310] [2025-02-08 14:16:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:11,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:11,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:16:11,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2025-02-08 14:16:11,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:11,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:11,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2025-02-08 14:16:11,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:11,600 INFO L124 PetriNetUnfolderBase]: 108/260 cut-off events. [2025-02-08 14:16:11,601 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:16:11,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 260 events. 108/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1215 event pairs, 23 based on Foata normal form. 20/248 useless extension candidates. Maximal degree in co-relation 427. Up to 82 conditions per place. [2025-02-08 14:16:11,606 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 46 selfloop transitions, 12 changer transitions 2/69 dead transitions. [2025-02-08 14:16:11,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 274 flow [2025-02-08 14:16:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:16:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:16:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2025-02-08 14:16:11,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2025-02-08 14:16:11,615 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 9 states and 156 transitions. [2025-02-08 14:16:11,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 274 flow [2025-02-08 14:16:11,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:11,620 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 142 flow [2025-02-08 14:16:11,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-02-08 14:16:11,626 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-02-08 14:16:11,627 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 142 flow [2025-02-08 14:16:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:11,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:11,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:11,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:16:11,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:11,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -340113109, now seen corresponding path program 1 times [2025-02-08 14:16:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784625718] [2025-02-08 14:16:11,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:11,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:11,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:11,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:11,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784625718] [2025-02-08 14:16:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784625718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694694894] [2025-02-08 14:16:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:11,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:11,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:11,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:11,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:11,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-02-08 14:16:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-02-08 14:16:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:11,916 INFO L124 PetriNetUnfolderBase]: 72/196 cut-off events. [2025-02-08 14:16:11,916 INFO L125 PetriNetUnfolderBase]: For 86/89 co-relation queries the response was YES. [2025-02-08 14:16:11,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 196 events. 72/196 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 833 event pairs, 10 based on Foata normal form. 25/208 useless extension candidates. Maximal degree in co-relation 375. Up to 74 conditions per place. [2025-02-08 14:16:11,918 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 35 selfloop transitions, 5 changer transitions 3/55 dead transitions. [2025-02-08 14:16:11,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 269 flow [2025-02-08 14:16:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:16:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:16:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-08 14:16:11,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2025-02-08 14:16:11,919 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 142 flow. Second operand 5 states and 108 transitions. [2025-02-08 14:16:11,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 269 flow [2025-02-08 14:16:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:11,921 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 132 flow [2025-02-08 14:16:11,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-02-08 14:16:11,922 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-02-08 14:16:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 132 flow [2025-02-08 14:16:11,922 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) [2025-02-08 14:16:11,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:11,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:11,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:16:11,922 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-02-08 14:16:11,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -339242219, now seen corresponding path program 1 times [2025-02-08 14:16:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124283638] [2025-02-08 14:16:11,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:11,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:11,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:11,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:11,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:11,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124283638] [2025-02-08 14:16:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124283638] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:16:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252216258] [2025-02-08 14:16:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:11,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:11,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:11,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:12,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-02-08 14:16:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-02-08 14:16:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:12,057 INFO L124 PetriNetUnfolderBase]: 50/138 cut-off events. [2025-02-08 14:16:12,057 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-02-08 14:16:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 138 events. 50/138 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 508 event pairs, 29 based on Foata normal form. 7/134 useless extension candidates. Maximal degree in co-relation 275. Up to 104 conditions per place. [2025-02-08 14:16:12,058 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 20 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2025-02-08 14:16:12,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 165 flow [2025-02-08 14:16:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2025-02-08 14:16:12,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2025-02-08 14:16:12,059 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 132 flow. Second operand 3 states and 61 transitions. [2025-02-08 14:16:12,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 165 flow [2025-02-08 14:16:12,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:12,061 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 115 flow [2025-02-08 14:16:12,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2025-02-08 14:16:12,062 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-02-08 14:16:12,062 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 115 flow [2025-02-08 14:16:12,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:12,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:12,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:16:12,062 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)] === [2025-02-08 14:16:12,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash -339242186, now seen corresponding path program 1 times [2025-02-08 14:16:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235744029] [2025-02-08 14:16:12,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:12,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:12,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:12,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:12,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:12,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:12,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235744029] [2025-02-08 14:16:12,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235744029] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:12,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:12,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:12,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73760451] [2025-02-08 14:16:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:12,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:12,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:12,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:12,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-02-08 14:16:12,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:12,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-02-08 14:16:12,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:12,252 INFO L124 PetriNetUnfolderBase]: 94/244 cut-off events. [2025-02-08 14:16:12,252 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-02-08 14:16:12,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 244 events. 94/244 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1047 event pairs, 47 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 525. Up to 147 conditions per place. [2025-02-08 14:16:12,256 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2025-02-08 14:16:12,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 211 flow [2025-02-08 14:16:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-02-08 14:16:12,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2025-02-08 14:16:12,259 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 115 flow. Second operand 4 states and 89 transitions. [2025-02-08 14:16:12,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 211 flow [2025-02-08 14:16:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:12,261 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 136 flow [2025-02-08 14:16:12,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-02-08 14:16:12,265 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-02-08 14:16:12,265 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 136 flow [2025-02-08 14:16:12,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:12,265 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:12,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:16:12,266 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)] === [2025-02-08 14:16:12,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash -432906265, now seen corresponding path program 1 times [2025-02-08 14:16:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:12,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511265271] [2025-02-08 14:16:12,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:12,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:16:12,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:16:12,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:12,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:16:12,287 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:16:12,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:16:12,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:16:12,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:12,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:16:12,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:16:12,323 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:16:12,323 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-02-08 14:16:12,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-02-08 14:16:12,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-02-08 14:16:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-02-08 14:16:12,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-02-08 14:16:12,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-02-08 14:16:12,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:16:12,328 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-08 14:16:12,332 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:16:12,332 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:16:12,360 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:16:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2025-02-08 14:16:12,373 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2025-02-08 14:16:12,373 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:16:12,374 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. [2025-02-08 14:16:12,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2025-02-08 14:16:12,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2025-02-08 14:16:12,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:16:12,377 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;@7bf76d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:16:12,379 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-08 14:16:12,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:16:12,381 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:16:12,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:12,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:12,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:12,381 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)] === [2025-02-08 14:16:12,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -728185114, now seen corresponding path program 1 times [2025-02-08 14:16:12,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:12,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117491999] [2025-02-08 14:16:12,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:12,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:12,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:12,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:12,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:12,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117491999] [2025-02-08 14:16:12,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117491999] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:12,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:12,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:16:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225140817] [2025-02-08 14:16:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:12,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:12,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:12,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:12,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:16:12,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-02-08 14:16:12,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:12,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-02-08 14:16:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:12,828 INFO L124 PetriNetUnfolderBase]: 1210/2185 cut-off events. [2025-02-08 14:16:12,829 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-02-08 14:16:12,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 2185 events. 1210/2185 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13373 event pairs, 211 based on Foata normal form. 96/2035 useless extension candidates. Maximal degree in co-relation 1893. Up to 518 conditions per place. [2025-02-08 14:16:12,840 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 99 selfloop transitions, 17 changer transitions 1/130 dead transitions. [2025-02-08 14:16:12,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 532 flow [2025-02-08 14:16:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2025-02-08 14:16:12,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5924528301886792 [2025-02-08 14:16:12,843 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 10 states and 314 transitions. [2025-02-08 14:16:12,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 532 flow [2025-02-08 14:16:12,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:12,845 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 216 flow [2025-02-08 14:16:12,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2025-02-08 14:16:12,846 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2025-02-08 14:16:12,846 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 216 flow [2025-02-08 14:16:12,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:12,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:12,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:16:12,847 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:12,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1098901832, now seen corresponding path program 1 times [2025-02-08 14:16:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:12,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253481299] [2025-02-08 14:16:12,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:12,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:12,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:12,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:12,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253481299] [2025-02-08 14:16:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253481299] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:12,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854192834] [2025-02-08 14:16:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:12,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:12,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:12,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:12,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-02-08 14:16:12,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:12,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:12,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-02-08 14:16:12,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:13,157 INFO L124 PetriNetUnfolderBase]: 857/1617 cut-off events. [2025-02-08 14:16:13,158 INFO L125 PetriNetUnfolderBase]: For 1211/1454 co-relation queries the response was YES. [2025-02-08 14:16:13,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3896 conditions, 1617 events. 857/1617 cut-off events. For 1211/1454 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9500 event pairs, 179 based on Foata normal form. 180/1704 useless extension candidates. Maximal degree in co-relation 3825. Up to 773 conditions per place. [2025-02-08 14:16:13,168 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 67 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2025-02-08 14:16:13,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 483 flow [2025-02-08 14:16:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2025-02-08 14:16:13,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6446540880503144 [2025-02-08 14:16:13,169 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 216 flow. Second operand 6 states and 205 transitions. [2025-02-08 14:16:13,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 483 flow [2025-02-08 14:16:13,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:13,178 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 223 flow [2025-02-08 14:16:13,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2025-02-08 14:16:13,178 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-02-08 14:16:13,178 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 223 flow [2025-02-08 14:16:13,179 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) [2025-02-08 14:16:13,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:13,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:13,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:16:13,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:13,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1098053782, now seen corresponding path program 1 times [2025-02-08 14:16:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:13,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853141811] [2025-02-08 14:16:13,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:13,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:13,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:13,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:13,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853141811] [2025-02-08 14:16:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853141811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:13,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:16:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479351501] [2025-02-08 14:16:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:13,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:13,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:13,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:13,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:13,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2025-02-08 14:16:13,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:13,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:13,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2025-02-08 14:16:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:13,358 INFO L124 PetriNetUnfolderBase]: 632/1408 cut-off events. [2025-02-08 14:16:13,358 INFO L125 PetriNetUnfolderBase]: For 1281/1449 co-relation queries the response was YES. [2025-02-08 14:16:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 1408 events. 632/1408 cut-off events. For 1281/1449 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9221 event pairs, 529 based on Foata normal form. 66/1297 useless extension candidates. Maximal degree in co-relation 2143. Up to 1043 conditions per place. [2025-02-08 14:16:13,368 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 30 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-02-08 14:16:13,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 267 flow [2025-02-08 14:16:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-08 14:16:13,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2025-02-08 14:16:13,369 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 223 flow. Second operand 3 states and 93 transitions. [2025-02-08 14:16:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 49 transitions, 267 flow [2025-02-08 14:16:13,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-08 14:16:13,373 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 182 flow [2025-02-08 14:16:13,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2025-02-08 14:16:13,374 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2025-02-08 14:16:13,374 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 182 flow [2025-02-08 14:16:13,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:13,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:13,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:13,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:16:13,374 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)] === [2025-02-08 14:16:13,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1098053749, now seen corresponding path program 1 times [2025-02-08 14:16:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667598261] [2025-02-08 14:16:13,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:13,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:13,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:13,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:13,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:13,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667598261] [2025-02-08 14:16:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667598261] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:13,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326464492] [2025-02-08 14:16:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:13,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:13,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:13,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:13,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2025-02-08 14:16:13,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:13,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:13,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2025-02-08 14:16:13,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:13,721 INFO L124 PetriNetUnfolderBase]: 1172/2480 cut-off events. [2025-02-08 14:16:13,722 INFO L125 PetriNetUnfolderBase]: For 729/903 co-relation queries the response was YES. [2025-02-08 14:16:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2480 events. 1172/2480 cut-off events. For 729/903 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17517 event pairs, 733 based on Foata normal form. 72/2297 useless extension candidates. Maximal degree in co-relation 5216. Up to 1388 conditions per place. [2025-02-08 14:16:13,740 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2025-02-08 14:16:13,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 400 flow [2025-02-08 14:16:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-02-08 14:16:13,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2025-02-08 14:16:13,742 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 182 flow. Second operand 4 states and 145 transitions. [2025-02-08 14:16:13,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 400 flow [2025-02-08 14:16:13,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:13,745 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 203 flow [2025-02-08 14:16:13,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-02-08 14:16:13,746 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2025-02-08 14:16:13,746 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 203 flow [2025-02-08 14:16:13,746 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) [2025-02-08 14:16:13,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:13,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:13,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:16:13,746 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)] === [2025-02-08 14:16:13,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1173138774, now seen corresponding path program 1 times [2025-02-08 14:16:13,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:13,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386992893] [2025-02-08 14:16:13,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:13,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:13,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:16:13,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:16:13,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:13,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:13,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386992893] [2025-02-08 14:16:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386992893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:16:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744471977] [2025-02-08 14:16:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:13,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:13,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:13,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:13,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-02-08 14:16:13,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:13,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:13,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-02-08 14:16:13,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:14,013 INFO L124 PetriNetUnfolderBase]: 1026/2134 cut-off events. [2025-02-08 14:16:14,013 INFO L125 PetriNetUnfolderBase]: For 1231/1317 co-relation queries the response was YES. [2025-02-08 14:16:14,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2134 events. 1026/2134 cut-off events. For 1231/1317 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14651 event pairs, 901 based on Foata normal form. 5/1885 useless extension candidates. Maximal degree in co-relation 5183. Up to 1674 conditions per place. [2025-02-08 14:16:14,025 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 34 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-02-08 14:16:14,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 291 flow [2025-02-08 14:16:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-02-08 14:16:14,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2025-02-08 14:16:14,026 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 203 flow. Second operand 3 states and 107 transitions. [2025-02-08 14:16:14,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 291 flow [2025-02-08 14:16:14,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:14,031 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 228 flow [2025-02-08 14:16:14,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2025-02-08 14:16:14,032 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2025-02-08 14:16:14,032 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 228 flow [2025-02-08 14:16:14,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:14,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:14,033 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:14,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:16:14,033 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:14,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1648069077, now seen corresponding path program 1 times [2025-02-08 14:16:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554118182] [2025-02-08 14:16:14,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:14,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:16:14,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:16:14,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:14,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:14,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554118182] [2025-02-08 14:16:14,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554118182] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:14,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:16:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964858900] [2025-02-08 14:16:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:14,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:14,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:14,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:16:14,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2025-02-08 14:16:14,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:14,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:14,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2025-02-08 14:16:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:14,364 INFO L124 PetriNetUnfolderBase]: 1021/1941 cut-off events. [2025-02-08 14:16:14,364 INFO L125 PetriNetUnfolderBase]: For 1217/1320 co-relation queries the response was YES. [2025-02-08 14:16:14,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 1941 events. 1021/1941 cut-off events. For 1217/1320 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12015 event pairs, 306 based on Foata normal form. 6/1827 useless extension candidates. Maximal degree in co-relation 4995. Up to 1390 conditions per place. [2025-02-08 14:16:14,377 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 9 changer transitions 6/74 dead transitions. [2025-02-08 14:16:14,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 435 flow [2025-02-08 14:16:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2025-02-08 14:16:14,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2025-02-08 14:16:14,378 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 228 flow. Second operand 6 states and 178 transitions. [2025-02-08 14:16:14,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 435 flow [2025-02-08 14:16:14,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:14,383 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 235 flow [2025-02-08 14:16:14,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2025-02-08 14:16:14,384 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2025-02-08 14:16:14,384 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 235 flow [2025-02-08 14:16:14,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:14,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:14,384 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:14,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:16:14,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:14,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1544392082, now seen corresponding path program 1 times [2025-02-08 14:16:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:14,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472525639] [2025-02-08 14:16:14,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:14,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:14,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:16:14,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:16:14,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:14,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472525639] [2025-02-08 14:16:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472525639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448711344] [2025-02-08 14:16:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:14,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:14,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:14,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:14,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-02-08 14:16:14,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:14,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:14,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-02-08 14:16:14,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:14,643 INFO L124 PetriNetUnfolderBase]: 982/2188 cut-off events. [2025-02-08 14:16:14,643 INFO L125 PetriNetUnfolderBase]: For 1199/1234 co-relation queries the response was YES. [2025-02-08 14:16:14,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 2188 events. 982/2188 cut-off events. For 1199/1234 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15877 event pairs, 336 based on Foata normal form. 59/2143 useless extension candidates. Maximal degree in co-relation 5257. Up to 1286 conditions per place. [2025-02-08 14:16:14,656 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2025-02-08 14:16:14,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 379 flow [2025-02-08 14:16:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-02-08 14:16:14,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2025-02-08 14:16:14,657 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 235 flow. Second operand 4 states and 135 transitions. [2025-02-08 14:16:14,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 379 flow [2025-02-08 14:16:14,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 349 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 14:16:14,662 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 215 flow [2025-02-08 14:16:14,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2025-02-08 14:16:14,663 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2025-02-08 14:16:14,663 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 215 flow [2025-02-08 14:16:14,663 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) [2025-02-08 14:16:14,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:14,663 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:14,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:16:14,663 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:14,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1544392363, now seen corresponding path program 1 times [2025-02-08 14:16:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892596031] [2025-02-08 14:16:14,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:14,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:16:14,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:16:14,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:14,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892596031] [2025-02-08 14:16:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892596031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:14,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:14,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:16:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750390078] [2025-02-08 14:16:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:14,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:16:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:14,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:16:14,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:16:14,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-02-08 14:16:14,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:14,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:14,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-02-08 14:16:14,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:15,106 INFO L124 PetriNetUnfolderBase]: 1446/2635 cut-off events. [2025-02-08 14:16:15,106 INFO L125 PetriNetUnfolderBase]: For 1471/1621 co-relation queries the response was YES. [2025-02-08 14:16:15,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 2635 events. 1446/2635 cut-off events. For 1471/1621 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16884 event pairs, 158 based on Foata normal form. 83/2657 useless extension candidates. Maximal degree in co-relation 6524. Up to 724 conditions per place. [2025-02-08 14:16:15,125 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 86 selfloop transitions, 15 changer transitions 0/114 dead transitions. [2025-02-08 14:16:15,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 670 flow [2025-02-08 14:16:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:16:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:16:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2025-02-08 14:16:15,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5450733752620545 [2025-02-08 14:16:15,126 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 215 flow. Second operand 9 states and 260 transitions. [2025-02-08 14:16:15,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 670 flow [2025-02-08 14:16:15,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:16:15,133 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 280 flow [2025-02-08 14:16:15,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-02-08 14:16:15,133 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-02-08 14:16:15,133 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 280 flow [2025-02-08 14:16:15,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:15,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:15,134 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:16:15,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:15,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash 631514475, now seen corresponding path program 1 times [2025-02-08 14:16:15,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:15,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862849647] [2025-02-08 14:16:15,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:15,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:16:15,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:16:15,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:15,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862849647] [2025-02-08 14:16:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862849647] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:15,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012208889] [2025-02-08 14:16:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:15,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:15,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:15,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:15,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-02-08 14:16:15,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:15,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:15,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-02-08 14:16:15,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:15,308 INFO L124 PetriNetUnfolderBase]: 1114/2456 cut-off events. [2025-02-08 14:16:15,308 INFO L125 PetriNetUnfolderBase]: For 2119/2222 co-relation queries the response was YES. [2025-02-08 14:16:15,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 2456 events. 1114/2456 cut-off events. For 2119/2222 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18235 event pairs, 275 based on Foata normal form. 68/2521 useless extension candidates. Maximal degree in co-relation 6089. Up to 1656 conditions per place. [2025-02-08 14:16:15,318 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 49 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-02-08 14:16:15,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 484 flow [2025-02-08 14:16:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-02-08 14:16:15,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-02-08 14:16:15,320 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 280 flow. Second operand 4 states and 136 transitions. [2025-02-08 14:16:15,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 484 flow [2025-02-08 14:16:15,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 476 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:15,324 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 290 flow [2025-02-08 14:16:15,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-02-08 14:16:15,325 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-02-08 14:16:15,325 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 290 flow [2025-02-08 14:16:15,326 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) [2025-02-08 14:16:15,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:15,326 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:15,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:16:15,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:15,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 631523226, now seen corresponding path program 1 times [2025-02-08 14:16:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289387689] [2025-02-08 14:16:15,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:15,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:15,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:16:15,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:16:15,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:15,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:15,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:15,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289387689] [2025-02-08 14:16:15,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289387689] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:15,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:15,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463252386] [2025-02-08 14:16:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:15,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:15,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:15,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:15,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-02-08 14:16:15,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:15,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:15,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-02-08 14:16:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:15,574 INFO L124 PetriNetUnfolderBase]: 1263/2362 cut-off events. [2025-02-08 14:16:15,574 INFO L125 PetriNetUnfolderBase]: For 2778/2920 co-relation queries the response was YES. [2025-02-08 14:16:15,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 2362 events. 1263/2362 cut-off events. For 2778/2920 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15099 event pairs, 240 based on Foata normal form. 77/2419 useless extension candidates. Maximal degree in co-relation 6517. Up to 1168 conditions per place. [2025-02-08 14:16:15,583 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2025-02-08 14:16:15,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 625 flow [2025-02-08 14:16:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2025-02-08 14:16:15,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2025-02-08 14:16:15,585 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 290 flow. Second operand 6 states and 196 transitions. [2025-02-08 14:16:15,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 625 flow [2025-02-08 14:16:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 94 transitions, 598 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:15,592 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 285 flow [2025-02-08 14:16:15,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2025-02-08 14:16:15,592 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2025-02-08 14:16:15,593 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 285 flow [2025-02-08 14:16:15,593 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) [2025-02-08 14:16:15,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:15,593 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:15,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:16:15,593 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-02-08 14:16:15,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1295030242, now seen corresponding path program 1 times [2025-02-08 14:16:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840402735] [2025-02-08 14:16:15,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:15,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:16:15,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:16:15,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:15,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:16:15,601 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:16:15,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:16:15,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:16:15,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:15,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:16:15,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:16:15,611 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:16:15,611 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-02-08 14:16:15,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-02-08 14:16:15,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-02-08 14:16:15,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:16:15,612 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:15,613 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:16:15,613 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:16:15,659 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:16:15,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2025-02-08 14:16:15,673 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2025-02-08 14:16:15,673 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 14:16:15,673 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. [2025-02-08 14:16:15,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2025-02-08 14:16:15,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2025-02-08 14:16:15,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:16:15,676 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;@7bf76d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:16:15,676 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-02-08 14:16:15,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:16:15,678 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:16:15,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:16:15,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:15,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:15,678 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)] === [2025-02-08 14:16:15,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1794685154, now seen corresponding path program 1 times [2025-02-08 14:16:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380437232] [2025-02-08 14:16:15,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:15,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:15,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:15,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:15,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380437232] [2025-02-08 14:16:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380437232] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:15,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:15,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:16:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133162917] [2025-02-08 14:16:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:15,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:15,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:15,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:16:15,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-02-08 14:16:15,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:15,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:15,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-02-08 14:16:15,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:16,622 INFO L124 PetriNetUnfolderBase]: 8710/13562 cut-off events. [2025-02-08 14:16:16,623 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-02-08 14:16:16,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 13562 events. 8710/13562 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93648 event pairs, 1571 based on Foata normal form. 400/12753 useless extension candidates. Maximal degree in co-relation 8369. Up to 4536 conditions per place. [2025-02-08 14:16:16,656 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 119 selfloop transitions, 20 changer transitions 1/157 dead transitions. [2025-02-08 14:16:16,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 668 flow [2025-02-08 14:16:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 427 transitions. [2025-02-08 14:16:16,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584931506849315 [2025-02-08 14:16:16,657 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 10 states and 427 transitions. [2025-02-08 14:16:16,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 668 flow [2025-02-08 14:16:16,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 157 transitions, 652 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:16,659 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 269 flow [2025-02-08 14:16:16,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2025-02-08 14:16:16,660 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-02-08 14:16:16,660 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 269 flow [2025-02-08 14:16:16,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:16,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:16,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:16,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:16:16,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:16,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -199334765, now seen corresponding path program 1 times [2025-02-08 14:16:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:16,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938807638] [2025-02-08 14:16:16,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:16,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:16,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:16,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:16,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938807638] [2025-02-08 14:16:16,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938807638] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:16,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688673814] [2025-02-08 14:16:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:16,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:16,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:16,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:16,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-02-08 14:16:16,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:16,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:16,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-02-08 14:16:16,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:17,181 INFO L124 PetriNetUnfolderBase]: 6487/10082 cut-off events. [2025-02-08 14:16:17,182 INFO L125 PetriNetUnfolderBase]: For 6577/7944 co-relation queries the response was YES. [2025-02-08 14:16:17,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24806 conditions, 10082 events. 6487/10082 cut-off events. For 6577/7944 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 65223 event pairs, 1511 based on Foata normal form. 771/10458 useless extension candidates. Maximal degree in co-relation 24736. Up to 5153 conditions per place. [2025-02-08 14:16:17,218 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 88 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2025-02-08 14:16:17,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 635 flow [2025-02-08 14:16:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2025-02-08 14:16:17,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6278538812785388 [2025-02-08 14:16:17,219 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 269 flow. Second operand 6 states and 275 transitions. [2025-02-08 14:16:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 635 flow [2025-02-08 14:16:17,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:17,246 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 288 flow [2025-02-08 14:16:17,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2025-02-08 14:16:17,247 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2025-02-08 14:16:17,247 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 288 flow [2025-02-08 14:16:17,247 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) [2025-02-08 14:16:17,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:17,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:17,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 14:16:17,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:17,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash -198512534, now seen corresponding path program 1 times [2025-02-08 14:16:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972665355] [2025-02-08 14:16:17,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:17,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:17,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:17,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:17,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:17,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972665355] [2025-02-08 14:16:17,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972665355] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:17,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:17,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:16:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349129544] [2025-02-08 14:16:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:17,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:17,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:17,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:17,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2025-02-08 14:16:17,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:17,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:17,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2025-02-08 14:16:17,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:17,750 INFO L124 PetriNetUnfolderBase]: 4756/8857 cut-off events. [2025-02-08 14:16:17,750 INFO L125 PetriNetUnfolderBase]: For 5847/6941 co-relation queries the response was YES. [2025-02-08 14:16:17,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19973 conditions, 8857 events. 4756/8857 cut-off events. For 5847/6941 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 70795 event pairs, 3999 based on Foata normal form. 307/8109 useless extension candidates. Maximal degree in co-relation 11400. Up to 6872 conditions per place. [2025-02-08 14:16:17,791 INFO L140 encePairwiseOnDemand]: 71/73 looper letters, 40 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2025-02-08 14:16:17,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 344 flow [2025-02-08 14:16:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2025-02-08 14:16:17,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662100456621004 [2025-02-08 14:16:17,793 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 288 flow. Second operand 3 states and 124 transitions. [2025-02-08 14:16:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 344 flow [2025-02-08 14:16:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 314 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-08 14:16:17,805 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 234 flow [2025-02-08 14:16:17,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2025-02-08 14:16:17,805 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-02-08 14:16:17,805 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 234 flow [2025-02-08 14:16:17,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:17,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:17,805 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:17,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 14:16:17,806 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)] === [2025-02-08 14:16:17,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -198512501, now seen corresponding path program 1 times [2025-02-08 14:16:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770658101] [2025-02-08 14:16:17,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:17,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:16:17,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:16:17,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:17,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770658101] [2025-02-08 14:16:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770658101] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:17,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:17,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:17,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708700713] [2025-02-08 14:16:17,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:17,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:17,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:17,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:17,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:17,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-02-08 14:16:17,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:17,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:17,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-02-08 14:16:17,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:18,549 INFO L124 PetriNetUnfolderBase]: 8725/15902 cut-off events. [2025-02-08 14:16:18,550 INFO L125 PetriNetUnfolderBase]: For 4892/6034 co-relation queries the response was YES. [2025-02-08 14:16:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33525 conditions, 15902 events. 8725/15902 cut-off events. For 4892/6034 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 136765 event pairs, 5443 based on Foata normal form. 376/14705 useless extension candidates. Maximal degree in co-relation 33511. Up to 9115 conditions per place. [2025-02-08 14:16:18,606 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 85 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2025-02-08 14:16:18,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 580 flow [2025-02-08 14:16:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-02-08 14:16:18,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815068493150684 [2025-02-08 14:16:18,607 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 234 flow. Second operand 4 states and 199 transitions. [2025-02-08 14:16:18,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 580 flow [2025-02-08 14:16:18,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:18,616 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 255 flow [2025-02-08 14:16:18,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-02-08 14:16:18,616 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-02-08 14:16:18,616 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 255 flow [2025-02-08 14:16:18,616 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) [2025-02-08 14:16:18,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:18,617 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:18,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 14:16:18,617 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:18,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash 284380710, now seen corresponding path program 1 times [2025-02-08 14:16:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:18,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850552141] [2025-02-08 14:16:18,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:18,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:16:18,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:16:18,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:18,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:16:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850552141] [2025-02-08 14:16:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850552141] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:18,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:18,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:16:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506696240] [2025-02-08 14:16:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:18,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:18,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:18,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:16:18,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-02-08 14:16:18,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:18,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:18,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-02-08 14:16:18,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:19,190 INFO L124 PetriNetUnfolderBase]: 7603/12434 cut-off events. [2025-02-08 14:16:19,190 INFO L125 PetriNetUnfolderBase]: For 7418/7992 co-relation queries the response was YES. [2025-02-08 14:16:19,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31402 conditions, 12434 events. 7603/12434 cut-off events. For 7418/7992 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 90262 event pairs, 2393 based on Foata normal form. 5/11762 useless extension candidates. Maximal degree in co-relation 31386. Up to 10200 conditions per place. [2025-02-08 14:16:19,251 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 53 selfloop transitions, 11 changer transitions 6/89 dead transitions. [2025-02-08 14:16:19,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 490 flow [2025-02-08 14:16:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-02-08 14:16:19,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.545662100456621 [2025-02-08 14:16:19,260 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 255 flow. Second operand 6 states and 239 transitions. [2025-02-08 14:16:19,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 490 flow [2025-02-08 14:16:19,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:19,287 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 277 flow [2025-02-08 14:16:19,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2025-02-08 14:16:19,287 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2025-02-08 14:16:19,288 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 277 flow [2025-02-08 14:16:19,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:19,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:19,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:19,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 14:16:19,288 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1127672742, now seen corresponding path program 1 times [2025-02-08 14:16:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929127646] [2025-02-08 14:16:19,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:19,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:16:19,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:16:19,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:19,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929127646] [2025-02-08 14:16:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929127646] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:19,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:19,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:16:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867817005] [2025-02-08 14:16:19,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:19,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:16:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:19,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:16:19,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:16:19,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-02-08 14:16:19,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:19,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:19,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-02-08 14:16:19,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:19,888 INFO L124 PetriNetUnfolderBase]: 7733/14541 cut-off events. [2025-02-08 14:16:19,888 INFO L125 PetriNetUnfolderBase]: For 9304/9706 co-relation queries the response was YES. [2025-02-08 14:16:19,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34326 conditions, 14541 events. 7733/14541 cut-off events. For 9304/9706 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 127284 event pairs, 6716 based on Foata normal form. 9/12782 useless extension candidates. Maximal degree in co-relation 34307. Up to 11145 conditions per place. [2025-02-08 14:16:19,945 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 44 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2025-02-08 14:16:19,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 383 flow [2025-02-08 14:16:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2025-02-08 14:16:19,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2025-02-08 14:16:19,946 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 277 flow. Second operand 3 states and 143 transitions. [2025-02-08 14:16:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 383 flow [2025-02-08 14:16:19,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 355 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 14:16:19,958 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 273 flow [2025-02-08 14:16:19,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-02-08 14:16:19,958 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-02-08 14:16:19,958 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 273 flow [2025-02-08 14:16:19,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:19,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:19,958 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:19,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 14:16:19,958 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:19,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -559044558, now seen corresponding path program 1 times [2025-02-08 14:16:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147376015] [2025-02-08 14:16:19,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:19,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:16:19,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:16:19,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:19,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147376015] [2025-02-08 14:16:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147376015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:19,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421110838] [2025-02-08 14:16:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:19,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:19,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:19,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:19,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-02-08 14:16:19,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 273 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) [2025-02-08 14:16:19,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:19,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-02-08 14:16:19,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:20,695 INFO L124 PetriNetUnfolderBase]: 7477/13815 cut-off events. [2025-02-08 14:16:20,695 INFO L125 PetriNetUnfolderBase]: For 6900/7122 co-relation queries the response was YES. [2025-02-08 14:16:20,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32142 conditions, 13815 events. 7477/13815 cut-off events. For 6900/7122 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 118568 event pairs, 2316 based on Foata normal form. 363/13310 useless extension candidates. Maximal degree in co-relation 32125. Up to 8544 conditions per place. [2025-02-08 14:16:20,764 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 62 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2025-02-08 14:16:20,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 483 flow [2025-02-08 14:16:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-02-08 14:16:20,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-02-08 14:16:20,765 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 273 flow. Second operand 4 states and 186 transitions. [2025-02-08 14:16:20,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 483 flow [2025-02-08 14:16:20,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:20,787 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 267 flow [2025-02-08 14:16:20,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2025-02-08 14:16:20,788 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2025-02-08 14:16:20,788 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 267 flow [2025-02-08 14:16:20,788 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) [2025-02-08 14:16:20,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:20,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:20,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 14:16:20,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:20,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash -559044501, now seen corresponding path program 1 times [2025-02-08 14:16:20,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:20,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836451049] [2025-02-08 14:16:20,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:20,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:20,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:16:20,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:16:20,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:20,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:20,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836451049] [2025-02-08 14:16:20,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836451049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:20,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:16:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129922637] [2025-02-08 14:16:20,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:20,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:16:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:20,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:16:20,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:16:20,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-02-08 14:16:20,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:20,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:20,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-02-08 14:16:20,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:21,899 INFO L124 PetriNetUnfolderBase]: 14910/24037 cut-off events. [2025-02-08 14:16:21,900 INFO L125 PetriNetUnfolderBase]: For 12821/14113 co-relation queries the response was YES. [2025-02-08 14:16:22,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59002 conditions, 24037 events. 14910/24037 cut-off events. For 12821/14113 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 189610 event pairs, 3103 based on Foata normal form. 609/24100 useless extension candidates. Maximal degree in co-relation 58985. Up to 8224 conditions per place. [2025-02-08 14:16:22,089 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 111 selfloop transitions, 23 changer transitions 0/151 dead transitions. [2025-02-08 14:16:22,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 886 flow [2025-02-08 14:16:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:16:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:16:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 363 transitions. [2025-02-08 14:16:22,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5525114155251142 [2025-02-08 14:16:22,091 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 267 flow. Second operand 9 states and 363 transitions. [2025-02-08 14:16:22,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 886 flow [2025-02-08 14:16:22,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:16:22,146 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 417 flow [2025-02-08 14:16:22,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-02-08 14:16:22,146 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2025-02-08 14:16:22,146 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 417 flow [2025-02-08 14:16:22,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:22,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:22,146 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:22,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 14:16:22,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:22,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -150511852, now seen corresponding path program 1 times [2025-02-08 14:16:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968782992] [2025-02-08 14:16:22,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:22,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:16:22,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:16:22,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:22,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968782992] [2025-02-08 14:16:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968782992] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270314963] [2025-02-08 14:16:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:22,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:22,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:22,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:22,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-02-08 14:16:22,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-02-08 14:16:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:23,099 INFO L124 PetriNetUnfolderBase]: 11890/21672 cut-off events. [2025-02-08 14:16:23,099 INFO L125 PetriNetUnfolderBase]: For 23774/25530 co-relation queries the response was YES. [2025-02-08 14:16:23,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54956 conditions, 21672 events. 11890/21672 cut-off events. For 23774/25530 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 196847 event pairs, 7147 based on Foata normal form. 525/20240 useless extension candidates. Maximal degree in co-relation 54935. Up to 17102 conditions per place. [2025-02-08 14:16:23,211 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 70 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2025-02-08 14:16:23,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 682 flow [2025-02-08 14:16:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-02-08 14:16:23,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6404109589041096 [2025-02-08 14:16:23,212 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 417 flow. Second operand 4 states and 187 transitions. [2025-02-08 14:16:23,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 682 flow [2025-02-08 14:16:23,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:23,246 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 443 flow [2025-02-08 14:16:23,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2025-02-08 14:16:23,246 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2025-02-08 14:16:23,246 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 443 flow [2025-02-08 14:16:23,246 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) [2025-02-08 14:16:23,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:23,246 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:23,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 14:16:23,247 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:23,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash -150510052, now seen corresponding path program 1 times [2025-02-08 14:16:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053500547] [2025-02-08 14:16:23,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:23,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:16:23,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:16:23,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:23,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053500547] [2025-02-08 14:16:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053500547] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:23,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896002917] [2025-02-08 14:16:23,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:23,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:16:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:23,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:16:23,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:16:23,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-02-08 14:16:23,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:23,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:23,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-02-08 14:16:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:24,526 INFO L124 PetriNetUnfolderBase]: 13621/22052 cut-off events. [2025-02-08 14:16:24,527 INFO L125 PetriNetUnfolderBase]: For 27020/29795 co-relation queries the response was YES. [2025-02-08 14:16:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61057 conditions, 22052 events. 13621/22052 cut-off events. For 27020/29795 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 172897 event pairs, 3938 based on Foata normal form. 683/22467 useless extension candidates. Maximal degree in co-relation 61034. Up to 10990 conditions per place. [2025-02-08 14:16:24,658 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 101 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2025-02-08 14:16:24,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 919 flow [2025-02-08 14:16:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2025-02-08 14:16:24,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2025-02-08 14:16:24,660 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 443 flow. Second operand 6 states and 266 transitions. [2025-02-08 14:16:24,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 919 flow [2025-02-08 14:16:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 894 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 14:16:24,792 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 448 flow [2025-02-08 14:16:24,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2025-02-08 14:16:24,793 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2025-02-08 14:16:24,793 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 448 flow [2025-02-08 14:16:24,793 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) [2025-02-08 14:16:24,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:24,793 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:24,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 14:16:24,793 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)] === [2025-02-08 14:16:24,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1689151170, now seen corresponding path program 1 times [2025-02-08 14:16:24,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:24,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649253697] [2025-02-08 14:16:24,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:24,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:24,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:24,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:24,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:24,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:24,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:24,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649253697] [2025-02-08 14:16:24,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649253697] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:24,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:24,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:16:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252234347] [2025-02-08 14:16:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:24,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:16:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:24,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:16:24,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:16:24,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-02-08 14:16:24,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:24,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:24,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-02-08 14:16:24,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:28,448 INFO L124 PetriNetUnfolderBase]: 25611/39006 cut-off events. [2025-02-08 14:16:28,448 INFO L125 PetriNetUnfolderBase]: For 51405/53627 co-relation queries the response was YES. [2025-02-08 14:16:28,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111055 conditions, 39006 events. 25611/39006 cut-off events. For 51405/53627 co-relation queries the response was YES. Maximal size of possible extension queue 1935. Compared 301919 event pairs, 5416 based on Foata normal form. 284/38249 useless extension candidates. Maximal degree in co-relation 111031. Up to 19178 conditions per place. [2025-02-08 14:16:28,771 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 192 selfloop transitions, 36 changer transitions 0/243 dead transitions. [2025-02-08 14:16:28,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 243 transitions, 1718 flow [2025-02-08 14:16:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:16:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:16:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 517 transitions. [2025-02-08 14:16:28,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447839831401475 [2025-02-08 14:16:28,773 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 448 flow. Second operand 13 states and 517 transitions. [2025-02-08 14:16:28,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 243 transitions, 1718 flow [2025-02-08 14:16:29,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 243 transitions, 1682 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:29,347 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 697 flow [2025-02-08 14:16:29,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=697, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2025-02-08 14:16:29,347 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2025-02-08 14:16:29,347 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 697 flow [2025-02-08 14:16:29,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:29,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:29,348 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:29,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-08 14:16:29,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:29,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1623345866, now seen corresponding path program 2 times [2025-02-08 14:16:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:29,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898042001] [2025-02-08 14:16:29,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:29,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:29,353 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:29,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:29,354 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:29,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:29,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898042001] [2025-02-08 14:16:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898042001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:29,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:29,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:16:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843603385] [2025-02-08 14:16:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:29,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:16:29,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:29,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:16:29,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:16:29,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-02-08 14:16:29,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:29,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:29,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-02-08 14:16:29,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:33,077 INFO L124 PetriNetUnfolderBase]: 26438/40254 cut-off events. [2025-02-08 14:16:33,077 INFO L125 PetriNetUnfolderBase]: For 79340/81704 co-relation queries the response was YES. [2025-02-08 14:16:33,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122742 conditions, 40254 events. 26438/40254 cut-off events. For 79340/81704 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 311715 event pairs, 3552 based on Foata normal form. 378/39601 useless extension candidates. Maximal degree in co-relation 122716. Up to 11875 conditions per place. [2025-02-08 14:16:33,353 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 177 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2025-02-08 14:16:33,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 241 transitions, 1821 flow [2025-02-08 14:16:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:16:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:16:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 538 transitions. [2025-02-08 14:16:33,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264187866927593 [2025-02-08 14:16:33,355 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 697 flow. Second operand 14 states and 538 transitions. [2025-02-08 14:16:33,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 241 transitions, 1821 flow [2025-02-08 14:16:34,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 241 transitions, 1794 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-02-08 14:16:34,383 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 895 flow [2025-02-08 14:16:34,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=895, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-02-08 14:16:34,383 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2025-02-08 14:16:34,383 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 895 flow [2025-02-08 14:16:34,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:34,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:34,384 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:34,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-08 14:16:34,384 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:34,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1645856850, now seen corresponding path program 1 times [2025-02-08 14:16:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:34,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13031038] [2025-02-08 14:16:34,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:34,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:34,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:34,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:34,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:34,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:34,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13031038] [2025-02-08 14:16:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13031038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311625321] [2025-02-08 14:16:34,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:34,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:16:34,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:16:34,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:34,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:34,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:34,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:34,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:34,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:34,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311625321] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:16:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831626892] [2025-02-08 14:16:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:34,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:34,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:34,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:34,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:16:34,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-02-08 14:16:34,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:34,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:34,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-02-08 14:16:34,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:37,266 INFO L124 PetriNetUnfolderBase]: 22941/41464 cut-off events. [2025-02-08 14:16:37,266 INFO L125 PetriNetUnfolderBase]: For 104155/108210 co-relation queries the response was YES. [2025-02-08 14:16:37,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117714 conditions, 41464 events. 22941/41464 cut-off events. For 104155/108210 co-relation queries the response was YES. Maximal size of possible extension queue 2059. Compared 404375 event pairs, 5368 based on Foata normal form. 2060/41526 useless extension candidates. Maximal degree in co-relation 117685. Up to 9050 conditions per place. [2025-02-08 14:16:37,510 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 281 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2025-02-08 14:16:37,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 314 transitions, 3689 flow [2025-02-08 14:16:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2025-02-08 14:16:37,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2025-02-08 14:16:37,511 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 895 flow. Second operand 6 states and 291 transitions. [2025-02-08 14:16:37,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 314 transitions, 3689 flow [2025-02-08 14:16:37,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 314 transitions, 3544 flow, removed 25 selfloop flow, removed 8 redundant places. [2025-02-08 14:16:37,935 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 856 flow [2025-02-08 14:16:37,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2025-02-08 14:16:37,936 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2025-02-08 14:16:37,937 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 856 flow [2025-02-08 14:16:37,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:37,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:37,937 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:37,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:16:38,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 14:16:38,138 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)] === [2025-02-08 14:16:38,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 101193102, now seen corresponding path program 1 times [2025-02-08 14:16:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528191640] [2025-02-08 14:16:38,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:38,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:38,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:38,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:38,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528191640] [2025-02-08 14:16:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528191640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:38,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:38,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:16:38,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787023928] [2025-02-08 14:16:38,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:38,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:16:38,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:38,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:16:38,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:16:38,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-02-08 14:16:38,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:38,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:38,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-02-08 14:16:38,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:41,548 INFO L124 PetriNetUnfolderBase]: 27265/41851 cut-off events. [2025-02-08 14:16:41,548 INFO L125 PetriNetUnfolderBase]: For 128122/129454 co-relation queries the response was YES. [2025-02-08 14:16:41,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140069 conditions, 41851 events. 27265/41851 cut-off events. For 128122/129454 co-relation queries the response was YES. Maximal size of possible extension queue 2087. Compared 330273 event pairs, 5813 based on Foata normal form. 400/41365 useless extension candidates. Maximal degree in co-relation 140039. Up to 16318 conditions per place. [2025-02-08 14:16:41,770 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 190 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2025-02-08 14:16:41,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 253 transitions, 2170 flow [2025-02-08 14:16:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:16:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:16:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-02-08 14:16:41,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-02-08 14:16:41,771 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 856 flow. Second operand 12 states and 480 transitions. [2025-02-08 14:16:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 253 transitions, 2170 flow [2025-02-08 14:16:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 253 transitions, 2086 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:42,814 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1080 flow [2025-02-08 14:16:42,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2025-02-08 14:16:42,814 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2025-02-08 14:16:42,814 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1080 flow [2025-02-08 14:16:42,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:42,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:42,815 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:42,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-08 14:16:42,815 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)] === [2025-02-08 14:16:42,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1463455739, now seen corresponding path program 1 times [2025-02-08 14:16:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:42,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980196907] [2025-02-08 14:16:42,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:42,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:16:42,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:16:42,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:42,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:42,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980196907] [2025-02-08 14:16:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980196907] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:16:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664013742] [2025-02-08 14:16:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:42,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:16:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:42,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:16:42,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:16:42,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-02-08 14:16:42,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 1080 flow. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:42,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:42,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-02-08 14:16:42,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:45,159 INFO L124 PetriNetUnfolderBase]: 25328/38716 cut-off events. [2025-02-08 14:16:45,159 INFO L125 PetriNetUnfolderBase]: For 145475/149398 co-relation queries the response was YES. [2025-02-08 14:16:45,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131450 conditions, 38716 events. 25328/38716 cut-off events. For 145475/149398 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 300636 event pairs, 3714 based on Foata normal form. 786/39034 useless extension candidates. Maximal degree in co-relation 131418. Up to 11581 conditions per place. [2025-02-08 14:16:45,426 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 215 selfloop transitions, 46 changer transitions 0/277 dead transitions. [2025-02-08 14:16:45,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 277 transitions, 2355 flow [2025-02-08 14:16:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:16:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:16:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-02-08 14:16:45,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-02-08 14:16:45,634 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1080 flow. Second operand 12 states and 531 transitions. [2025-02-08 14:16:45,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 277 transitions, 2355 flow [2025-02-08 14:16:46,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 277 transitions, 2286 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-08 14:16:46,787 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 1171 flow [2025-02-08 14:16:46,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1171, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2025-02-08 14:16:46,788 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2025-02-08 14:16:46,788 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 1171 flow [2025-02-08 14:16:46,789 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) [2025-02-08 14:16:46,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:46,789 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:46,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-08 14:16:46,789 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-02-08 14:16:46,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1475944803, now seen corresponding path program 1 times [2025-02-08 14:16:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365173875] [2025-02-08 14:16:46,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:46,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:16:46,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:16:46,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:46,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:46,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:46,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365173875] [2025-02-08 14:16:46,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365173875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:46,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:46,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:16:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400710849] [2025-02-08 14:16:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:46,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:16:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:46,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:16:46,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:16:46,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-02-08 14:16:46,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 1171 flow. Second operand has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:46,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:46,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-02-08 14:16:46,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:51,299 INFO L124 PetriNetUnfolderBase]: 37542/60818 cut-off events. [2025-02-08 14:16:51,299 INFO L125 PetriNetUnfolderBase]: For 199399/203233 co-relation queries the response was YES. [2025-02-08 14:16:51,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192658 conditions, 60818 events. 37542/60818 cut-off events. For 199399/203233 co-relation queries the response was YES. Maximal size of possible extension queue 3133. Compared 550950 event pairs, 18931 based on Foata normal form. 2087/61401 useless extension candidates. Maximal degree in co-relation 192625. Up to 23657 conditions per place. [2025-02-08 14:16:51,704 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 180 selfloop transitions, 103 changer transitions 0/312 dead transitions. [2025-02-08 14:16:51,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 312 transitions, 3460 flow [2025-02-08 14:16:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:16:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:16:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-02-08 14:16:51,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-02-08 14:16:51,708 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 1171 flow. Second operand 12 states and 480 transitions. [2025-02-08 14:16:51,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 312 transitions, 3460 flow [2025-02-08 14:16:53,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 312 transitions, 3282 flow, removed 11 selfloop flow, removed 5 redundant places. [2025-02-08 14:16:53,039 INFO L231 Difference]: Finished difference. Result has 138 places, 203 transitions, 2578 flow [2025-02-08 14:16:53,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=138, PETRI_TRANSITIONS=203} [2025-02-08 14:16:53,040 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2025-02-08 14:16:53,040 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 203 transitions, 2578 flow [2025-02-08 14:16:53,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:53,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:53,040 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:53,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-08 14:16:53,044 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)] === [2025-02-08 14:16:53,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1157980825, now seen corresponding path program 1 times [2025-02-08 14:16:53,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:53,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764499660] [2025-02-08 14:16:53,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:53,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:16:53,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:16:53,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:53,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:16:53,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764499660] [2025-02-08 14:16:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764499660] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:53,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:16:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989222952] [2025-02-08 14:16:53,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:53,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:16:53,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:53,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:16:53,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:16:53,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-02-08 14:16:53,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 203 transitions, 2578 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) [2025-02-08 14:16:53,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:53,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-02-08 14:16:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:57,687 INFO L124 PetriNetUnfolderBase]: 35289/56361 cut-off events. [2025-02-08 14:16:57,688 INFO L125 PetriNetUnfolderBase]: For 235933/242107 co-relation queries the response was YES. [2025-02-08 14:16:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195750 conditions, 56361 events. 35289/56361 cut-off events. For 235933/242107 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 495311 event pairs, 7872 based on Foata normal form. 901/56644 useless extension candidates. Maximal degree in co-relation 195710. Up to 18806 conditions per place. [2025-02-08 14:16:58,129 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 255 selfloop transitions, 93 changer transitions 0/365 dead transitions. [2025-02-08 14:16:58,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 365 transitions, 4124 flow [2025-02-08 14:16:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:16:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:16:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-02-08 14:16:58,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-02-08 14:16:58,130 INFO L175 Difference]: Start difference. First operand has 138 places, 203 transitions, 2578 flow. Second operand 12 states and 531 transitions. [2025-02-08 14:16:58,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 365 transitions, 4124 flow