./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-4.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-4.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 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:42:59,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:42:59,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:42:59,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:42:59,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:42:59,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:42:59,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:42:59,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:42:59,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:42:59,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:42:59,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:42:59,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:42:59,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:59,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:42:59,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:42:59,828 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 -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2025-03-17 19:43:00,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:43:00,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:43:00,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:43:00,036 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:43:00,036 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:43:00,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2025-03-17 19:43:01,165 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fddb8cb/c4d4be6a8ef54f588aa8c5544fa2925e/FLAG2f4a65ba5 [2025-03-17 19:43:01,357 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:43:01,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2025-03-17 19:43:01,367 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fddb8cb/c4d4be6a8ef54f588aa8c5544fa2925e/FLAG2f4a65ba5 [2025-03-17 19:43:01,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fddb8cb/c4d4be6a8ef54f588aa8c5544fa2925e [2025-03-17 19:43:01,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:43:01,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:43:01,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:01,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:43:01,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:43:01,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c33fcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01, skipping insertion in model container [2025-03-17 19:43:01,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:43:01,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:01,876 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:43:01,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:01,910 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:43:01,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01 WrapperNode [2025-03-17 19:43:01,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:01,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:01,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:43:01,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:43:01,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,940 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-03-17 19:43:01,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:01,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:43:01,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:43:01,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:43:01,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,963 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 19:43:01,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,967 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:43:01,970 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:43:01,970 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:43:01,970 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:43:01,970 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (1/1) ... [2025-03-17 19:43:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:43:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:01,998 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 19:43:02,000 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 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:43:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:43:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:43:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:43:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:43:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:43:02,018 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 19:43:02,078 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:43:02,080 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:43:02,217 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:43:02,218 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:43:02,323 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:43:02,323 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:43:02,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:02 BoogieIcfgContainer [2025-03-17 19:43:02,324 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:43:02,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:43:02,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:43:02,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:43:02,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:43:01" (1/3) ... [2025-03-17 19:43:02,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771cc4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:02, skipping insertion in model container [2025-03-17 19:43:02,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:01" (2/3) ... [2025-03-17 19:43:02,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771cc4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:02, skipping insertion in model container [2025-03-17 19:43:02,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:02" (3/3) ... [2025-03-17 19:43:02,331 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2025-03-17 19:43:02,342 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:43:02,343 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-4.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-17 19:43:02,343 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:43:02,396 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:43:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-03-17 19:43:02,451 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-03-17 19:43:02,452 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:43:02,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 108 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-17 19:43:02,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-03-17 19:43:02,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2025-03-17 19:43:02,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:43:02,472 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;@61648550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:43:02,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-17 19:43:02,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:43:02,480 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-03-17 19:43:02,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:43:02,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:02,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:02,483 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:02,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1084531821, now seen corresponding path program 1 times [2025-03-17 19:43:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:02,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107980216] [2025-03-17 19:43:02,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:02,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:02,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:02,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:02,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:02,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:02,713 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 19:43:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107980216] [2025-03-17 19:43:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107980216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:02,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821675708] [2025-03-17 19:43:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:02,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:02,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:02,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:02,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:02,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:02,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:02,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:02,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:03,130 INFO L124 PetriNetUnfolderBase]: 1988/3147 cut-off events. [2025-03-17 19:43:03,131 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-03-17 19:43:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 3147 events. 1988/3147 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19547 event pairs, 530 based on Foata normal form. 0/2047 useless extension candidates. Maximal degree in co-relation 5746. Up to 1533 conditions per place. [2025-03-17 19:43:03,159 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 37 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2025-03-17 19:43:03,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 231 flow [2025-03-17 19:43:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-03-17 19:43:03,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2025-03-17 19:43:03,172 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 3 states and 98 transitions. [2025-03-17 19:43:03,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 231 flow [2025-03-17 19:43:03,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:43:03,186 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2025-03-17 19:43:03,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-03-17 19:43:03,190 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2025-03-17 19:43:03,191 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2025-03-17 19:43:03,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:03,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:03,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:03,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:43:03,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:03,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1084531820, now seen corresponding path program 1 times [2025-03-17 19:43:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:03,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907221217] [2025-03-17 19:43:03,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:03,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:03,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:03,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:03,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907221217] [2025-03-17 19:43:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907221217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946847759] [2025-03-17 19:43:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:03,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:03,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:03,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:03,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:03,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:03,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:03,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:03,633 INFO L124 PetriNetUnfolderBase]: 3170/4873 cut-off events. [2025-03-17 19:43:03,633 INFO L125 PetriNetUnfolderBase]: For 3157/3157 co-relation queries the response was YES. [2025-03-17 19:43:03,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11635 conditions, 4873 events. 3170/4873 cut-off events. For 3157/3157 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 28418 event pairs, 534 based on Foata normal form. 316/4600 useless extension candidates. Maximal degree in co-relation 7796. Up to 2609 conditions per place. [2025-03-17 19:43:03,697 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 45 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2025-03-17 19:43:03,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 329 flow [2025-03-17 19:43:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-03-17 19:43:03,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2025-03-17 19:43:03,699 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 98 transitions. [2025-03-17 19:43:03,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 329 flow [2025-03-17 19:43:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:03,718 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 222 flow [2025-03-17 19:43:03,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2025-03-17 19:43:03,718 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2025-03-17 19:43:03,718 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 222 flow [2025-03-17 19:43:03,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:03,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:03,719 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:03,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:43:03,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:03,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 583834272, now seen corresponding path program 1 times [2025-03-17 19:43:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:03,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166355610] [2025-03-17 19:43:03,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:03,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:43:03,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:43:03,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:03,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:03,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:03,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166355610] [2025-03-17 19:43:03,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166355610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:03,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:43:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997624511] [2025-03-17 19:43:03,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:03,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:03,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:03,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:03,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2025-03-17 19:43:03,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 19:43:03,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:03,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2025-03-17 19:43:03,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:04,204 INFO L124 PetriNetUnfolderBase]: 3718/5496 cut-off events. [2025-03-17 19:43:04,204 INFO L125 PetriNetUnfolderBase]: For 5244/5834 co-relation queries the response was YES. [2025-03-17 19:43:04,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15226 conditions, 5496 events. 3718/5496 cut-off events. For 5244/5834 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 31550 event pairs, 1081 based on Foata normal form. 3/5110 useless extension candidates. Maximal degree in co-relation 12619. Up to 2534 conditions per place. [2025-03-17 19:43:04,239 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 64 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-03-17 19:43:04,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 455 flow [2025-03-17 19:43:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-03-17 19:43:04,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2025-03-17 19:43:04,242 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 222 flow. Second operand 3 states and 89 transitions. [2025-03-17 19:43:04,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 455 flow [2025-03-17 19:43:04,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:04,249 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 226 flow [2025-03-17 19:43:04,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2025-03-17 19:43:04,250 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2025-03-17 19:43:04,250 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 226 flow [2025-03-17 19:43:04,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 19:43:04,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:04,251 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:04,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:43:04,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:04,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash -140448889, now seen corresponding path program 1 times [2025-03-17 19:43:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765828828] [2025-03-17 19:43:04,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:04,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:43:04,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:43:04,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:04,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:04,321 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 19:43:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765828828] [2025-03-17 19:43:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765828828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522219499] [2025-03-17 19:43:04,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:04,324 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 19:43:04,326 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 19:43:04,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:43:04,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:43:04,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:04,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:04,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:04,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:04,446 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 19:43:04,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:04,479 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 19:43:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522219499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:04,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-17 19:43:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434574717] [2025-03-17 19:43:04,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:04,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:43:04,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:04,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:43:04,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:43:04,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:04,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:04,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:04,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:04,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:05,275 INFO L124 PetriNetUnfolderBase]: 5998/10143 cut-off events. [2025-03-17 19:43:05,275 INFO L125 PetriNetUnfolderBase]: For 7113/7113 co-relation queries the response was YES. [2025-03-17 19:43:05,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26301 conditions, 10143 events. 5998/10143 cut-off events. For 7113/7113 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 69513 event pairs, 171 based on Foata normal form. 356/9730 useless extension candidates. Maximal degree in co-relation 23988. Up to 2827 conditions per place. [2025-03-17 19:43:05,321 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 93 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2025-03-17 19:43:05,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 148 transitions, 825 flow [2025-03-17 19:43:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:43:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:43:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2025-03-17 19:43:05,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7325227963525835 [2025-03-17 19:43:05,325 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 226 flow. Second operand 7 states and 241 transitions. [2025-03-17 19:43:05,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 148 transitions, 825 flow [2025-03-17 19:43:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 148 transitions, 819 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:05,331 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 620 flow [2025-03-17 19:43:05,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2025-03-17 19:43:05,332 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2025-03-17 19:43:05,332 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 620 flow [2025-03-17 19:43:05,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:05,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:05,332 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:05,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:43:05,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:05,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:05,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash -8264164, now seen corresponding path program 1 times [2025-03-17 19:43:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051222243] [2025-03-17 19:43:05,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:05,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:43:05,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:43:05,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:05,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:05,611 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 19:43:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051222243] [2025-03-17 19:43:05,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051222243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:05,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:05,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:43:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116067971] [2025-03-17 19:43:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:05,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:05,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:05,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:05,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2025-03-17 19:43:05,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:05,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:05,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2025-03-17 19:43:05,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:06,347 INFO L124 PetriNetUnfolderBase]: 8005/12131 cut-off events. [2025-03-17 19:43:06,349 INFO L125 PetriNetUnfolderBase]: For 31612/31612 co-relation queries the response was YES. [2025-03-17 19:43:06,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40422 conditions, 12131 events. 8005/12131 cut-off events. For 31612/31612 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 78332 event pairs, 2330 based on Foata normal form. 0/11282 useless extension candidates. Maximal degree in co-relation 19119. Up to 5612 conditions per place. [2025-03-17 19:43:06,417 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 108 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2025-03-17 19:43:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 123 transitions, 1067 flow [2025-03-17 19:43:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2025-03-17 19:43:06,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2025-03-17 19:43:06,418 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 620 flow. Second operand 3 states and 87 transitions. [2025-03-17 19:43:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 123 transitions, 1067 flow [2025-03-17 19:43:06,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 123 transitions, 1055 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-17 19:43:06,454 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 593 flow [2025-03-17 19:43:06,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=63, PETRI_TRANSITIONS=88} [2025-03-17 19:43:06,455 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2025-03-17 19:43:06,456 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 593 flow [2025-03-17 19:43:06,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:06,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:06,457 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:06,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:43:06,457 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:06,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1313131451, now seen corresponding path program 1 times [2025-03-17 19:43:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737978129] [2025-03-17 19:43:06,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:06,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:06,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:06,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:06,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:43:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737978129] [2025-03-17 19:43:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737978129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077182759] [2025-03-17 19:43:06,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:06,577 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 19:43:06,579 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 19:43:06,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:06,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:06,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:06,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:06,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:06,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:43:06,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:43:06,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077182759] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:06,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:43:06,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-17 19:43:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059951749] [2025-03-17 19:43:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:06,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:06,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:06,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:43:06,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:06,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 88 transitions, 593 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 19:43:06,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:06,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:06,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:07,132 INFO L124 PetriNetUnfolderBase]: 4408/7027 cut-off events. [2025-03-17 19:43:07,132 INFO L125 PetriNetUnfolderBase]: For 27725/27725 co-relation queries the response was YES. [2025-03-17 19:43:07,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23962 conditions, 7027 events. 4408/7027 cut-off events. For 27725/27725 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 47532 event pairs, 2357 based on Foata normal form. 507/6934 useless extension candidates. Maximal degree in co-relation 12906. Up to 5986 conditions per place. [2025-03-17 19:43:07,194 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 56 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2025-03-17 19:43:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 605 flow [2025-03-17 19:43:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-03-17 19:43:07,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2025-03-17 19:43:07,196 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 593 flow. Second operand 3 states and 76 transitions. [2025-03-17 19:43:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 605 flow [2025-03-17 19:43:07,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:07,210 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 487 flow [2025-03-17 19:43:07,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2025-03-17 19:43:07,210 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2025-03-17 19:43:07,210 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 487 flow [2025-03-17 19:43:07,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 19:43:07,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:07,211 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:07,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:43:07,411 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,SelfDestructingSolverStorable5 [2025-03-17 19:43:07,412 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:07,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash -629503675, now seen corresponding path program 1 times [2025-03-17 19:43:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107279656] [2025-03-17 19:43:07,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:07,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:07,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:07,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:07,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:07,519 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 19:43:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107279656] [2025-03-17 19:43:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107279656] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102258050] [2025-03-17 19:43:07,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:07,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:07,521 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 19:43:07,523 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 19:43:07,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:07,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:07,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:07,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:07,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:43:07,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:07,614 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 19:43:07,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:07,667 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 19:43:07,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102258050] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:07,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:07,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-17 19:43:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216221850] [2025-03-17 19:43:07,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:07,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:43:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:07,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:43:07,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:43:07,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:07,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 487 flow. Second operand has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:07,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:07,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:07,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:09,123 INFO L124 PetriNetUnfolderBase]: 13536/25297 cut-off events. [2025-03-17 19:43:09,123 INFO L125 PetriNetUnfolderBase]: For 96934/96934 co-relation queries the response was YES. [2025-03-17 19:43:09,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75219 conditions, 25297 events. 13536/25297 cut-off events. For 96934/96934 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 214246 event pairs, 198 based on Foata normal form. 3039/26602 useless extension candidates. Maximal degree in co-relation 75183. Up to 4634 conditions per place. [2025-03-17 19:43:09,272 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 145 selfloop transitions, 105 changer transitions 0/267 dead transitions. [2025-03-17 19:43:09,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 267 transitions, 2004 flow [2025-03-17 19:43:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 19:43:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 19:43:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 374 transitions. [2025-03-17 19:43:09,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2025-03-17 19:43:09,274 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 487 flow. Second operand 11 states and 374 transitions. [2025-03-17 19:43:09,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 267 transitions, 2004 flow [2025-03-17 19:43:09,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 267 transitions, 1978 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:09,431 INFO L231 Difference]: Finished difference. Result has 77 places, 162 transitions, 1669 flow [2025-03-17 19:43:09,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1669, PETRI_PLACES=77, PETRI_TRANSITIONS=162} [2025-03-17 19:43:09,431 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-03-17 19:43:09,432 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 162 transitions, 1669 flow [2025-03-17 19:43:09,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:09,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:09,432 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:09,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:43:09,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:09,633 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:09,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash 458062420, now seen corresponding path program 1 times [2025-03-17 19:43:09,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275589471] [2025-03-17 19:43:09,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:09,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:09,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:09,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:09,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:09,705 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 19:43:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275589471] [2025-03-17 19:43:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275589471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770812324] [2025-03-17 19:43:09,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:09,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:09,708 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 19:43:09,709 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 19:43:09,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:43:09,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:43:09,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:09,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:09,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:43:09,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:09,885 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 19:43:09,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:09,941 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 19:43:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770812324] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:09,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:09,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-17 19:43:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431756692] [2025-03-17 19:43:09,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:09,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:43:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:09,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:43:09,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:43:09,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:09,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 162 transitions, 1669 flow. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 19:43:09,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:09,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:17,440 INFO L124 PetriNetUnfolderBase]: 51692/97782 cut-off events. [2025-03-17 19:43:17,440 INFO L125 PetriNetUnfolderBase]: For 751159/751159 co-relation queries the response was YES. [2025-03-17 19:43:17,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362082 conditions, 97782 events. 51692/97782 cut-off events. For 751159/751159 co-relation queries the response was YES. Maximal size of possible extension queue 2496. Compared 981189 event pairs, 2476 based on Foata normal form. 8809/99402 useless extension candidates. Maximal degree in co-relation 264537. Up to 16105 conditions per place. [2025-03-17 19:43:18,131 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 216 selfloop transitions, 381 changer transitions 0/614 dead transitions. [2025-03-17 19:43:18,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 614 transitions, 7497 flow [2025-03-17 19:43:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:43:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:43:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 358 transitions. [2025-03-17 19:43:18,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2025-03-17 19:43:18,132 INFO L175 Difference]: Start difference. First operand has 77 places, 162 transitions, 1669 flow. Second operand 12 states and 358 transitions. [2025-03-17 19:43:18,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 614 transitions, 7497 flow [2025-03-17 19:43:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 614 transitions, 7108 flow, removed 192 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:22,641 INFO L231 Difference]: Finished difference. Result has 94 places, 530 transitions, 7529 flow [2025-03-17 19:43:22,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7529, PETRI_PLACES=94, PETRI_TRANSITIONS=530} [2025-03-17 19:43:22,642 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2025-03-17 19:43:22,642 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 530 transitions, 7529 flow [2025-03-17 19:43:22,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 19:43:22,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:22,642 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:22,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:43:22,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:22,843 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:43:22,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash -573163034, now seen corresponding path program 1 times [2025-03-17 19:43:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895057795] [2025-03-17 19:43:22,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:22,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:43:22,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:43:22,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:22,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:43:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895057795] [2025-03-17 19:43:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895057795] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746365947] [2025-03-17 19:43:22,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:22,930 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 19:43:22,932 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 19:43:22,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:43:22,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:43:22,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:22,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:22,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:43:22,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:23,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:43:23,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746365947] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:23,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:23,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2025-03-17 19:43:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957159804] [2025-03-17 19:43:23,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:23,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:43:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:23,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:43:23,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:43:23,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2025-03-17 19:43:23,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 530 transitions, 7529 flow. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:23,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:23,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2025-03-17 19:43:23,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand