./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:42:54,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:42:54,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:42:54,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:42:54,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:42:54,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:42:54,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:42:54,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:42:54,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:42:54,495 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:42:54,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:42:54,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:42:54,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:42:54,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:42:54,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:42:54,497 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:42:54,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:54,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:42:54,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:42:54,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:42:54,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2025-03-17 19:42:54,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:42:54,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:42:54,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:42:54,708 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:42:54,708 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:42:54,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-03-17 19:42:55,803 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9fa3eae/59d25a7b9ea144a385bb0c117edc83e9/FLAG5ef9efa41 [2025-03-17 19:42:56,063 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:42:56,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-03-17 19:42:56,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9fa3eae/59d25a7b9ea144a385bb0c117edc83e9/FLAG5ef9efa41 [2025-03-17 19:42:56,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9fa3eae/59d25a7b9ea144a385bb0c117edc83e9 [2025-03-17 19:42:56,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:42:56,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:42:56,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:56,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:42:56,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:42:56,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d0155c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56, skipping insertion in model container [2025-03-17 19:42:56,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:42:56,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:56,518 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:42:56,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:56,539 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:42:56,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56 WrapperNode [2025-03-17 19:42:56,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:56,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:56,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:42:56,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:42:56,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,558 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2025-03-17 19:42:56,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:56,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:42:56,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:42:56,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:42:56,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,579 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 19:42:56,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,582 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:42:56,586 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:42:56,586 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:42:56,586 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:42:56,587 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (1/1) ... [2025-03-17 19:42:56,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:56,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:42:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:42:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:42:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:42:56,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:42:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:42:56,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:42:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:42:56,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:42:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:42:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:42:56,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:42:56,636 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:42:56,697 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:42:56,698 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:42:56,874 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:42:56,874 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:42:56,983 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:42:56,983 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:42:56,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:56 BoogieIcfgContainer [2025-03-17 19:42:56,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:42:56,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:42:56,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:42:56,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:42:56,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:42:56" (1/3) ... [2025-03-17 19:42:56,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a29ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:56, skipping insertion in model container [2025-03-17 19:42:56,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:56" (2/3) ... [2025-03-17 19:42:56,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a29ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:56, skipping insertion in model container [2025-03-17 19:42:56,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:56" (3/3) ... [2025-03-17 19:42:56,995 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2025-03-17 19:42:57,005 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:42:57,007 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3-extended.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-17 19:42:57,007 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:42:57,069 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:42:57,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 125 flow [2025-03-17 19:42:57,130 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2025-03-17 19:42:57,132 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:42:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 6/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-03-17 19:42:57,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 125 flow [2025-03-17 19:42:57,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 109 flow [2025-03-17 19:42:57,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:42:57,154 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;@6e8b600a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:42:57,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-03-17 19:42:57,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:42:57,161 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-17 19:42:57,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:42:57,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:57,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:42:57,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:42:57,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1149334218, now seen corresponding path program 1 times [2025-03-17 19:42:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267706990] [2025-03-17 19:42:57,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:57,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:57,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:42:57,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:42:57,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:57,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:57,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:57,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267706990] [2025-03-17 19:42:57,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267706990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:57,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:42:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010654283] [2025-03-17 19:42:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:42:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:57,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:42:57,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:42:57,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:42:57,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:57,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:57,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:42:57,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:58,072 INFO L124 PetriNetUnfolderBase]: 6500/8815 cut-off events. [2025-03-17 19:42:58,073 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2025-03-17 19:42:58,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16971 conditions, 8815 events. 6500/8815 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 47965 event pairs, 1294 based on Foata normal form. 0/4752 useless extension candidates. Maximal degree in co-relation 16153. Up to 7835 conditions per place. [2025-03-17 19:42:58,160 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 42 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2025-03-17 19:42:58,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 251 flow [2025-03-17 19:42:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:42:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:42:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-03-17 19:42:58,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2025-03-17 19:42:58,171 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 109 flow. Second operand 3 states and 112 transitions. [2025-03-17 19:42:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 251 flow [2025-03-17 19:42:58,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 235 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:58,182 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 169 flow [2025-03-17 19:42:58,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2025-03-17 19:42:58,188 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2025-03-17 19:42:58,188 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 169 flow [2025-03-17 19:42:58,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:58,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:58,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:58,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:42:58,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:42:58,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1539394681, now seen corresponding path program 1 times [2025-03-17 19:42:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820403588] [2025-03-17 19:42:58,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:58,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:58,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:58,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:58,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:58,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820403588] [2025-03-17 19:42:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820403588] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734460766] [2025-03-17 19:42:58,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:58,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:58,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:58,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:42:58,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:42:58,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:58,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:58,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:58,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:42:58,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:58,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:42:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734460766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:42:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-17 19:42:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143404349] [2025-03-17 19:42:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:58,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:42:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:58,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:42:58,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:58,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:42:58,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:58,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:58,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:42:58,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:58,819 INFO L124 PetriNetUnfolderBase]: 4081/5704 cut-off events. [2025-03-17 19:42:58,819 INFO L125 PetriNetUnfolderBase]: For 1029/1029 co-relation queries the response was YES. [2025-03-17 19:42:58,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14369 conditions, 5704 events. 4081/5704 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 31797 event pairs, 1597 based on Foata normal form. 0/3300 useless extension candidates. Maximal degree in co-relation 4427. Up to 5046 conditions per place. [2025-03-17 19:42:58,869 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2025-03-17 19:42:58,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 229 flow [2025-03-17 19:42:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:42:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:42:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2025-03-17 19:42:58,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-17 19:42:58,872 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 169 flow. Second operand 3 states and 84 transitions. [2025-03-17 19:42:58,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 229 flow [2025-03-17 19:42:58,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:58,874 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 152 flow [2025-03-17 19:42:58,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2025-03-17 19:42:58,876 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2025-03-17 19:42:58,876 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 152 flow [2025-03-17 19:42:58,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:58,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:58,877 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:58,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:42:59,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:59,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:42:59,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1539394682, now seen corresponding path program 1 times [2025-03-17 19:42:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391148325] [2025-03-17 19:42:59,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:59,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:59,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:59,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:59,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:59,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391148325] [2025-03-17 19:42:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391148325] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689634935] [2025-03-17 19:42:59,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:59,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:59,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:59,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:42:59,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:42:59,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:59,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:59,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:59,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:59,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:42:59,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:59,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:42:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689634935] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:42:59,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:42:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-17 19:42:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679348326] [2025-03-17 19:42:59,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:42:59,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:42:59,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:59,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:42:59,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:42:59,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:42:59,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:59,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:59,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:42:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:00,216 INFO L124 PetriNetUnfolderBase]: 10503/15336 cut-off events. [2025-03-17 19:43:00,216 INFO L125 PetriNetUnfolderBase]: For 2912/2912 co-relation queries the response was YES. [2025-03-17 19:43:00,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36691 conditions, 15336 events. 10503/15336 cut-off events. For 2912/2912 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 92253 event pairs, 543 based on Foata normal form. 0/10911 useless extension candidates. Maximal degree in co-relation 36683. Up to 7945 conditions per place. [2025-03-17 19:43:00,290 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 99 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2025-03-17 19:43:00,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 150 transitions, 725 flow [2025-03-17 19:43:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:43:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:43:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 277 transitions. [2025-03-17 19:43:00,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.760989010989011 [2025-03-17 19:43:00,294 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 152 flow. Second operand 7 states and 277 transitions. [2025-03-17 19:43:00,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 150 transitions, 725 flow [2025-03-17 19:43:00,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 150 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:00,297 INFO L231 Difference]: Finished difference. Result has 56 places, 80 transitions, 471 flow [2025-03-17 19:43:00,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=56, PETRI_TRANSITIONS=80} [2025-03-17 19:43:00,299 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-03-17 19:43:00,299 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 80 transitions, 471 flow [2025-03-17 19:43:00,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:00,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:00,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:00,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:43:00,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:43:00,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:43:00,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -228787641, now seen corresponding path program 1 times [2025-03-17 19:43:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:00,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043967307] [2025-03-17 19:43:00,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:00,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:43:00,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:43:00,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:00,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:00,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:00,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043967307] [2025-03-17 19:43:00,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043967307] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:00,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:00,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:00,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303464678] [2025-03-17 19:43:00,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:00,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:00,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:00,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:43:00,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:43:00,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 80 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:00,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:00,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:43:00,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:01,892 INFO L124 PetriNetUnfolderBase]: 15658/23328 cut-off events. [2025-03-17 19:43:01,892 INFO L125 PetriNetUnfolderBase]: For 62047/62047 co-relation queries the response was YES. [2025-03-17 19:43:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79966 conditions, 23328 events. 15658/23328 cut-off events. For 62047/62047 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 149877 event pairs, 1080 based on Foata normal form. 1164/22868 useless extension candidates. Maximal degree in co-relation 79953. Up to 12242 conditions per place. [2025-03-17 19:43:02,029 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 97 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2025-03-17 19:43:02,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 133 transitions, 1014 flow [2025-03-17 19:43:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-03-17 19:43:02,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2025-03-17 19:43:02,031 INFO L175 Difference]: Start difference. First operand has 56 places, 80 transitions, 471 flow. Second operand 4 states and 142 transitions. [2025-03-17 19:43:02,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 133 transitions, 1014 flow [2025-03-17 19:43:02,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 133 transitions, 977 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:02,080 INFO L231 Difference]: Finished difference. Result has 60 places, 95 transitions, 721 flow [2025-03-17 19:43:02,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=60, PETRI_TRANSITIONS=95} [2025-03-17 19:43:02,081 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2025-03-17 19:43:02,081 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 95 transitions, 721 flow [2025-03-17 19:43:02,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:02,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:02,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:02,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:43:02,082 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:43:02,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1311417379, now seen corresponding path program 1 times [2025-03-17 19:43:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:02,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833227704] [2025-03-17 19:43:02,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:02,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:43:02,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:43:02,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:02,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833227704] [2025-03-17 19:43:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833227704] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:02,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444570334] [2025-03-17 19:43:02,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:02,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:02,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:02,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:02,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:43:02,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:43:02,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:43:02,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:02,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:02,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:02,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:02,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444570334] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:02,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:02,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-17 19:43:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006160289] [2025-03-17 19:43:02,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:02,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:43:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:02,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:43:02,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:43:02,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:43:02,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 95 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:43:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:07,030 INFO L124 PetriNetUnfolderBase]: 54296/82182 cut-off events. [2025-03-17 19:43:07,030 INFO L125 PetriNetUnfolderBase]: For 416282/416282 co-relation queries the response was YES. [2025-03-17 19:43:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310729 conditions, 82182 events. 54296/82182 cut-off events. For 416282/416282 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 595432 event pairs, 2490 based on Foata normal form. 6563/83451 useless extension candidates. Maximal degree in co-relation 310713. Up to 35551 conditions per place. [2025-03-17 19:43:07,605 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 210 selfloop transitions, 158 changer transitions 0/382 dead transitions. [2025-03-17 19:43:07,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 382 transitions, 3566 flow [2025-03-17 19:43:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:43:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:43:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2025-03-17 19:43:07,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841880341880342 [2025-03-17 19:43:07,607 INFO L175 Difference]: Start difference. First operand has 60 places, 95 transitions, 721 flow. Second operand 9 states and 367 transitions. [2025-03-17 19:43:07,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 382 transitions, 3566 flow [2025-03-17 19:43:08,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 382 transitions, 3559 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:08,035 INFO L231 Difference]: Finished difference. Result has 73 places, 255 transitions, 3175 flow [2025-03-17 19:43:08,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3175, PETRI_PLACES=73, PETRI_TRANSITIONS=255} [2025-03-17 19:43:08,036 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2025-03-17 19:43:08,036 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 255 transitions, 3175 flow [2025-03-17 19:43:08,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:08,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:08,037 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:08,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:43:08,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:08,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:43:08,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1701806548, now seen corresponding path program 1 times [2025-03-17 19:43:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738713324] [2025-03-17 19:43:08,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:08,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:43:08,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:43:08,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:08,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738713324] [2025-03-17 19:43:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738713324] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977059909] [2025-03-17 19:43:08,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:08,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:08,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:08,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:08,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:43:08,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:43:08,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:43:08,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:08,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:08,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:08,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:08,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977059909] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:08,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-17 19:43:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043793205] [2025-03-17 19:43:08,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:08,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:43:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:08,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:43:08,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:43:08,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:43:08,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 255 transitions, 3175 flow. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:08,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:08,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:43:08,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:24,254 INFO L124 PetriNetUnfolderBase]: 132652/203293 cut-off events. [2025-03-17 19:43:24,254 INFO L125 PetriNetUnfolderBase]: For 2330167/2330167 co-relation queries the response was YES. [2025-03-17 19:43:24,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852540 conditions, 203293 events. 132652/203293 cut-off events. For 2330167/2330167 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 1665166 event pairs, 4066 based on Foata normal form. 25673/216618 useless extension candidates. Maximal degree in co-relation 852517. Up to 81991 conditions per place. [2025-03-17 19:43:26,258 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 315 selfloop transitions, 537 changer transitions 0/866 dead transitions. [2025-03-17 19:43:26,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 866 transitions, 11631 flow [2025-03-17 19:43:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:43:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:43:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2025-03-17 19:43:26,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841880341880342 [2025-03-17 19:43:26,260 INFO L175 Difference]: Start difference. First operand has 73 places, 255 transitions, 3175 flow. Second operand 9 states and 367 transitions. [2025-03-17 19:43:26,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 866 transitions, 11631 flow [2025-03-17 19:43:32,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 866 transitions, 10984 flow, removed 320 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:32,213 INFO L231 Difference]: Finished difference. Result has 86 places, 733 transitions, 11384 flow [2025-03-17 19:43:32,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11384, PETRI_PLACES=86, PETRI_TRANSITIONS=733} [2025-03-17 19:43:32,215 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2025-03-17 19:43:32,215 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 733 transitions, 11384 flow [2025-03-17 19:43:32,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:32,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:32,216 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:32,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:43:32,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:32,420 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:43:32,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1239188435, now seen corresponding path program 1 times [2025-03-17 19:43:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256171672] [2025-03-17 19:43:32,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:32,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:32,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:32,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:32,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256171672] [2025-03-17 19:43:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256171672] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:32,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716529317] [2025-03-17 19:43:32,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:32,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:32,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:32,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:43:32,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:32,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:32,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:32,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:32,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:43:32,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716529317] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:32,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:43:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659550688] [2025-03-17 19:43:32,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:32,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 19:43:32,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:32,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 19:43:32,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-17 19:43:32,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2025-03-17 19:43:32,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 733 transitions, 11384 flow. Second operand has 13 states, 13 states have (on average 19.23076923076923) internal successors, (250), 13 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:32,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:32,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2025-03-17 19:43:32,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand