./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:03:57,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:03:57,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:03:57,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:03:57,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:03:57,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:03:57,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:03:57,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:03:57,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:03:57,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:03:57,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:03:57,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:03:57,804 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:03:57,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:03:57,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:03:57,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:03:57,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:03:57,807 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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2025-03-14 01:03:58,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:03:58,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:03:58,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:03:58,050 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:03:58,050 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:03:58,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-03-14 01:03:59,166 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c994c16/60ad17961abc464084ed4a32dcb1f74d/FLAG56e027421 [2025-03-14 01:03:59,367 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:03:59,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-03-14 01:03:59,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c994c16/60ad17961abc464084ed4a32dcb1f74d/FLAG56e027421 [2025-03-14 01:03:59,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c994c16/60ad17961abc464084ed4a32dcb1f74d [2025-03-14 01:03:59,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:03:59,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:03:59,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:03:59,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:03:59,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:03:59,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8cba8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59, skipping insertion in model container [2025-03-14 01:03:59,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:03:59,888 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-03-14 01:03:59,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:03:59,905 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:03:59,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-03-14 01:03:59,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:03:59,933 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:03:59,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59 WrapperNode [2025-03-14 01:03:59,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:03:59,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:03:59,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:03:59,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:03:59,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,954 INFO L138 Inliner]: procedures = 19, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-03-14 01:03:59,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:03:59,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:03:59,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:03:59,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:03:59,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,978 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]. [2025-03-14 01:03:59,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,981 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:03:59,987 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:03:59,987 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:03:59,987 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:03:59,988 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (1/1) ... [2025-03-14 01:03:59,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:04:00,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:00,017 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) [2025-03-14 01:04:00,020 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 [2025-03-14 01:04:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:04:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:04:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:04:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:04:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:04:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:04:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:04:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:04:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:04:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:04:00,042 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:04:00,115 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:04:00,117 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:04:00,331 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:04:00,332 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:04:00,333 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:04:00,464 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:04:00,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:04:00 BoogieIcfgContainer [2025-03-14 01:04:00,464 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:04:00,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:04:00,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:04:00,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:04:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:03:59" (1/3) ... [2025-03-14 01:04:00,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29df45f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:04:00, skipping insertion in model container [2025-03-14 01:04:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:59" (2/3) ... [2025-03-14 01:04:00,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29df45f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:04:00, skipping insertion in model container [2025-03-14 01:04:00,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:04:00" (3/3) ... [2025-03-14 01:04:00,471 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2025-03-14 01:04:00,483 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:04:00,484 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3-extended.wvr.c that has 4 procedures, 37 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-14 01:04:00,484 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:04:00,535 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:04:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2025-03-14 01:04:00,593 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2025-03-14 01:04:00,597 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:04:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-03-14 01:04:00,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2025-03-14 01:04:00,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2025-03-14 01:04:00,613 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:04:00,622 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;@7f0e7a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:04:00,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:04:00,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:04:00,636 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2025-03-14 01:04:00,636 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:04:00,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:00,637 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:00,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:00,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -403319982, now seen corresponding path program 1 times [2025-03-14 01:04:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261537979] [2025-03-14 01:04:00,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:00,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:00,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-14 01:04:00,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-14 01:04:00,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:00,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:00,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261537979] [2025-03-14 01:04:00,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261537979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:00,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:00,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:04:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052806588] [2025-03-14 01:04:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:00,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:04:00,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:00,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:04:00,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:04:00,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:00,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-14 01:04:00,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:00,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:01,136 INFO L124 PetriNetUnfolderBase]: 996/1607 cut-off events. [2025-03-14 01:04:01,137 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-03-14 01:04:01,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1607 events. 996/1607 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8097 event pairs, 94 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 2669. Up to 1177 conditions per place. [2025-03-14 01:04:01,155 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 32 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2025-03-14 01:04:01,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 223 flow [2025-03-14 01:04:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:04:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:04:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-03-14 01:04:01,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2025-03-14 01:04:01,167 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 95 transitions. [2025-03-14 01:04:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 223 flow [2025-03-14 01:04:01,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:04:01,176 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2025-03-14 01:04:01,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2025-03-14 01:04:01,182 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2025-03-14 01:04:01,182 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2025-03-14 01:04:01,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-14 01:04:01,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:01,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:01,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:04:01,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:01,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash 195976686, now seen corresponding path program 1 times [2025-03-14 01:04:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338355963] [2025-03-14 01:04:01,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:01,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:04:01,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:04:01,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:01,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:01,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338355963] [2025-03-14 01:04:01,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338355963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:04:01,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944701820] [2025-03-14 01:04:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:01,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:04:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:01,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:04:01,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:04:01,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-14 01:04:01,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:01,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:01,502 INFO L124 PetriNetUnfolderBase]: 1142/1797 cut-off events. [2025-03-14 01:04:01,503 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2025-03-14 01:04:01,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 1797 events. 1142/1797 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9094 event pairs, 171 based on Foata normal form. 48/1665 useless extension candidates. Maximal degree in co-relation 2810. Up to 900 conditions per place. [2025-03-14 01:04:01,515 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 43 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2025-03-14 01:04:01,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 265 flow [2025-03-14 01:04:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:04:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:04:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-14 01:04:01,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2025-03-14 01:04:01,517 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 94 transitions. [2025-03-14 01:04:01,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 265 flow [2025-03-14 01:04:01,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:01,519 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2025-03-14 01:04:01,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2025-03-14 01:04:01,520 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2025-03-14 01:04:01,520 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2025-03-14 01:04:01,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-14 01:04:01,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:01,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:01,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:04:01,520 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:01,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash -445698992, now seen corresponding path program 1 times [2025-03-14 01:04:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617672209] [2025-03-14 01:04:01,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:01,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:04:01,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:04:01,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:01,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:01,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:01,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617672209] [2025-03-14 01:04:01,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617672209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:01,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:01,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:04:01,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112178857] [2025-03-14 01:04:01,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:01,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:04:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:01,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:04:01,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:04:01,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:01,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-14 01:04:01,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:01,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:01,822 INFO L124 PetriNetUnfolderBase]: 1223/1996 cut-off events. [2025-03-14 01:04:01,823 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2025-03-14 01:04:01,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1996 events. 1223/1996 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11159 event pairs, 198 based on Foata normal form. 71/1800 useless extension candidates. Maximal degree in co-relation 2690. Up to 1041 conditions per place. [2025-03-14 01:04:01,835 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2025-03-14 01:04:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 277 flow [2025-03-14 01:04:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:04:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:04:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-03-14 01:04:01,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2025-03-14 01:04:01,837 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 93 transitions. [2025-03-14 01:04:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 277 flow [2025-03-14 01:04:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:01,840 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2025-03-14 01:04:01,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2025-03-14 01:04:01,841 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2025-03-14 01:04:01,841 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2025-03-14 01:04:01,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-14 01:04:01,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:01,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:01,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:04:01,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:01,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash -935003290, now seen corresponding path program 1 times [2025-03-14 01:04:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824597877] [2025-03-14 01:04:01,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:01,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:04:01,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:04:01,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:01,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:01,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:01,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824597877] [2025-03-14 01:04:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824597877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:04:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926668622] [2025-03-14 01:04:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:01,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:04:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:01,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:04:01,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:04:01,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:01,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-14 01:04:01,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:01,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:02,119 INFO L124 PetriNetUnfolderBase]: 1417/2302 cut-off events. [2025-03-14 01:04:02,119 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2025-03-14 01:04:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2302 events. 1417/2302 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13103 event pairs, 321 based on Foata normal form. 64/2094 useless extension candidates. Maximal degree in co-relation 2133. Up to 1031 conditions per place. [2025-03-14 01:04:02,131 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 45 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2025-03-14 01:04:02,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 295 flow [2025-03-14 01:04:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:04:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:04:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-03-14 01:04:02,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2025-03-14 01:04:02,132 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 92 transitions. [2025-03-14 01:04:02,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 295 flow [2025-03-14 01:04:02,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:02,134 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2025-03-14 01:04:02,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2025-03-14 01:04:02,134 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2025-03-14 01:04:02,134 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2025-03-14 01:04:02,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-14 01:04:02,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:02,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:02,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:04:02,135 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:02,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1789345942, now seen corresponding path program 1 times [2025-03-14 01:04:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864369047] [2025-03-14 01:04:02,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:02,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-14 01:04:02,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 01:04:02,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:02,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864369047] [2025-03-14 01:04:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864369047] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869079665] [2025-03-14 01:04:02,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:02,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:02,352 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) [2025-03-14 01:04:02,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:04:02,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-14 01:04:02,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 01:04:02,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:02,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:02,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:04:02,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:02,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:04:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869079665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:04:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-14 01:04:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206470814] [2025-03-14 01:04:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:02,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:04:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:02,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:04:02,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:04:02,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2025-03-14 01:04:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2025-03-14 01:04:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:02,834 INFO L124 PetriNetUnfolderBase]: 2853/4006 cut-off events. [2025-03-14 01:04:02,834 INFO L125 PetriNetUnfolderBase]: For 1983/1983 co-relation queries the response was YES. [2025-03-14 01:04:02,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10800 conditions, 4006 events. 2853/4006 cut-off events. For 1983/1983 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21414 event pairs, 889 based on Foata normal form. 76/3874 useless extension candidates. Maximal degree in co-relation 3981. Up to 1944 conditions per place. [2025-03-14 01:04:02,855 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 58 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-14 01:04:02,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 382 flow [2025-03-14 01:04:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:04:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:04:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-14 01:04:02,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2025-03-14 01:04:02,856 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 4 states and 114 transitions. [2025-03-14 01:04:02,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 382 flow [2025-03-14 01:04:02,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 76 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:02,862 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 186 flow [2025-03-14 01:04:02,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2025-03-14 01:04:02,862 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-03-14 01:04:02,862 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 186 flow [2025-03-14 01:04:02,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:02,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:02,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:02,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 01:04:03,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:03,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:03,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1985564594, now seen corresponding path program 1 times [2025-03-14 01:04:03,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:03,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880793377] [2025-03-14 01:04:03,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:03,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-14 01:04:03,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-14 01:04:03,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:03,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:04:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:03,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880793377] [2025-03-14 01:04:03,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880793377] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:03,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432805970] [2025-03-14 01:04:03,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:03,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:03,222 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) [2025-03-14 01:04:03,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:04:03,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-14 01:04:03,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-14 01:04:03,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:03,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:03,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:04:03,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:03,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:04:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432805970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:03,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:04:03,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-03-14 01:04:03,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750020463] [2025-03-14 01:04:03,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:03,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:04:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:03,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:04:03,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:04:03,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-03-14 01:04:03,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:03,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:03,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-03-14 01:04:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:03,864 INFO L124 PetriNetUnfolderBase]: 4188/6490 cut-off events. [2025-03-14 01:04:03,864 INFO L125 PetriNetUnfolderBase]: For 5022/5126 co-relation queries the response was YES. [2025-03-14 01:04:03,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18764 conditions, 6490 events. 4188/6490 cut-off events. For 5022/5126 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 41690 event pairs, 633 based on Foata normal form. 120/6312 useless extension candidates. Maximal degree in co-relation 6981. Up to 2285 conditions per place. [2025-03-14 01:04:03,937 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 83 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2025-03-14 01:04:03,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 109 transitions, 612 flow [2025-03-14 01:04:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:04:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:04:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2025-03-14 01:04:03,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7103174603174603 [2025-03-14 01:04:03,939 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 186 flow. Second operand 6 states and 179 transitions. [2025-03-14 01:04:03,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 109 transitions, 612 flow [2025-03-14 01:04:03,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 606 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:03,947 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 277 flow [2025-03-14 01:04:03,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2025-03-14 01:04:03,948 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2025-03-14 01:04:03,949 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 277 flow [2025-03-14 01:04:03,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:03,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:03,949 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:03,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 01:04:04,152 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 [2025-03-14 01:04:04,152 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:04,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1407713906, now seen corresponding path program 1 times [2025-03-14 01:04:04,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173615686] [2025-03-14 01:04:04,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:04,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:04:04,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:04:04,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:04,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-14 01:04:04,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:04,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173615686] [2025-03-14 01:04:04,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173615686] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:04,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291222779] [2025-03-14 01:04:04,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:04,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:04,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:04,291 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) [2025-03-14 01:04:04,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:04:04,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:04:04,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:04:04,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:04,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:04,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:04:04,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-14 01:04:04,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:04:04,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291222779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:04,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:04:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-14 01:04:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566696798] [2025-03-14 01:04:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:04,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:04,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:04,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:04:04,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-03-14 01:04:04,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2025-03-14 01:04:04,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:04,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-03-14 01:04:04,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:05,094 INFO L124 PetriNetUnfolderBase]: 6294/9667 cut-off events. [2025-03-14 01:04:05,095 INFO L125 PetriNetUnfolderBase]: For 14289/14971 co-relation queries the response was YES. [2025-03-14 01:04:05,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29882 conditions, 9667 events. 6294/9667 cut-off events. For 14289/14971 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 62358 event pairs, 507 based on Foata normal form. 333/9599 useless extension candidates. Maximal degree in co-relation 13309. Up to 3638 conditions per place. [2025-03-14 01:04:05,158 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 84 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2025-03-14 01:04:05,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 774 flow [2025-03-14 01:04:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2025-03-14 01:04:05,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2025-03-14 01:04:05,160 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 277 flow. Second operand 5 states and 151 transitions. [2025-03-14 01:04:05,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 774 flow [2025-03-14 01:04:05,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 764 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:05,175 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 419 flow [2025-03-14 01:04:05,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2025-03-14 01:04:05,175 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2025-03-14 01:04:05,175 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 419 flow [2025-03-14 01:04:05,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2025-03-14 01:04:05,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:05,176 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:05,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 01:04:05,376 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 [2025-03-14 01:04:05,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:05,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1067328040, now seen corresponding path program 2 times [2025-03-14 01:04:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493403184] [2025-03-14 01:04:05,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:05,384 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-14 01:04:05,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 39 statements. [2025-03-14 01:04:05,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:05,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-14 01:04:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493403184] [2025-03-14 01:04:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493403184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:05,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:04:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715467220] [2025-03-14 01:04:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:05,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:05,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:05,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-03-14 01:04:05,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 419 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2025-03-14 01:04:05,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:05,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-03-14 01:04:05,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:06,290 INFO L124 PetriNetUnfolderBase]: 6994/10925 cut-off events. [2025-03-14 01:04:06,290 INFO L125 PetriNetUnfolderBase]: For 20340/21063 co-relation queries the response was YES. [2025-03-14 01:04:06,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36285 conditions, 10925 events. 6994/10925 cut-off events. For 20340/21063 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 72050 event pairs, 1912 based on Foata normal form. 309/11159 useless extension candidates. Maximal degree in co-relation 17944. Up to 3458 conditions per place. [2025-03-14 01:04:06,345 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 87 selfloop transitions, 11 changer transitions 0/115 dead transitions. [2025-03-14 01:04:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 115 transitions, 862 flow [2025-03-14 01:04:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:04:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:04:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-14 01:04:06,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2025-03-14 01:04:06,347 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 419 flow. Second operand 4 states and 124 transitions. [2025-03-14 01:04:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 115 transitions, 862 flow [2025-03-14 01:04:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 860 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:06,367 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 488 flow [2025-03-14 01:04:06,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=488, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2025-03-14 01:04:06,368 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2025-03-14 01:04:06,368 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 488 flow [2025-03-14 01:04:06,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2025-03-14 01:04:06,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:06,369 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:06,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:04:06,369 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:06,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1118699977, now seen corresponding path program 1 times [2025-03-14 01:04:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856408026] [2025-03-14 01:04:06,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:06,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-14 01:04:06,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:06,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:06,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:06,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:06,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856408026] [2025-03-14 01:04:06,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856408026] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:06,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104888235] [2025-03-14 01:04:06,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:06,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:06,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:06,491 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) [2025-03-14 01:04:06,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:04:06,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-14 01:04:06,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:06,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:06,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:06,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:04:06,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:06,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104888235] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:06,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-03-14 01:04:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483447472] [2025-03-14 01:04:06,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:06,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:04:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:06,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:04:06,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 01:04:06,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:06,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 488 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2025-03-14 01:04:06,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:06,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:06,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:09,148 INFO L124 PetriNetUnfolderBase]: 19885/32990 cut-off events. [2025-03-14 01:04:09,148 INFO L125 PetriNetUnfolderBase]: For 74353/77478 co-relation queries the response was YES. [2025-03-14 01:04:09,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114857 conditions, 32990 events. 19885/32990 cut-off events. For 74353/77478 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 260932 event pairs, 2130 based on Foata normal form. 963/33192 useless extension candidates. Maximal degree in co-relation 49471. Up to 11115 conditions per place. [2025-03-14 01:04:09,341 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 188 selfloop transitions, 28 changer transitions 1/238 dead transitions. [2025-03-14 01:04:09,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 238 transitions, 2170 flow [2025-03-14 01:04:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:04:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:04:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2025-03-14 01:04:09,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2025-03-14 01:04:09,342 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 488 flow. Second operand 6 states and 215 transitions. [2025-03-14 01:04:09,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 238 transitions, 2170 flow [2025-03-14 01:04:09,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 238 transitions, 2115 flow, removed 17 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:09,444 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 650 flow [2025-03-14 01:04:09,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2025-03-14 01:04:09,445 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2025-03-14 01:04:09,445 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 650 flow [2025-03-14 01:04:09,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2025-03-14 01:04:09,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:09,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:09,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-14 01:04:09,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:09,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:09,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -814925327, now seen corresponding path program 2 times [2025-03-14 01:04:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634481546] [2025-03-14 01:04:09,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:09,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:09,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:09,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:09,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634481546] [2025-03-14 01:04:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634481546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471866288] [2025-03-14 01:04:09,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:09,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:09,797 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) [2025-03-14 01:04:09,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:04:09,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:09,847 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:09,847 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:09,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:09,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:04:09,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:09,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471866288] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:09,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-14 01:04:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635955428] [2025-03-14 01:04:09,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:09,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:04:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:09,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:04:09,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:04:09,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:09,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2025-03-14 01:04:09,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:09,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:14,901 INFO L124 PetriNetUnfolderBase]: 39493/66048 cut-off events. [2025-03-14 01:04:14,901 INFO L125 PetriNetUnfolderBase]: For 172559/178620 co-relation queries the response was YES. [2025-03-14 01:04:15,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247470 conditions, 66048 events. 39493/66048 cut-off events. For 172559/178620 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 582600 event pairs, 3694 based on Foata normal form. 2002/66778 useless extension candidates. Maximal degree in co-relation 106640. Up to 22001 conditions per place. [2025-03-14 01:04:15,368 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 225 selfloop transitions, 58 changer transitions 1/305 dead transitions. [2025-03-14 01:04:15,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 305 transitions, 2819 flow [2025-03-14 01:04:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:04:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:04:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2025-03-14 01:04:15,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2025-03-14 01:04:15,369 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 650 flow. Second operand 7 states and 254 transitions. [2025-03-14 01:04:15,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 305 transitions, 2819 flow [2025-03-14 01:04:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 305 transitions, 2711 flow, removed 54 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:15,735 INFO L231 Difference]: Finished difference. Result has 83 places, 125 transitions, 874 flow [2025-03-14 01:04:15,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=83, PETRI_TRANSITIONS=125} [2025-03-14 01:04:15,737 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2025-03-14 01:04:15,737 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 125 transitions, 874 flow [2025-03-14 01:04:15,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2025-03-14 01:04:15,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:15,738 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:15,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-14 01:04:15,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-14 01:04:15,938 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:15,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 12594925, now seen corresponding path program 3 times [2025-03-14 01:04:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:15,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422455076] [2025-03-14 01:04:15,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:15,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:15,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:15,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:04:15,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422455076] [2025-03-14 01:04:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422455076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960183269] [2025-03-14 01:04:16,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:16,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:16,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:16,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:16,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:04:16,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:16,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:16,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:04:16,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:16,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:04:16,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:16,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960183269] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:16,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-14 01:04:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698049475] [2025-03-14 01:04:16,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:16,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:04:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:16,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:04:16,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:04:16,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:16,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 125 transitions, 874 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2025-03-14 01:04:16,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:16,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:16,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:24,206 INFO L124 PetriNetUnfolderBase]: 56881/94478 cut-off events. [2025-03-14 01:04:24,206 INFO L125 PetriNetUnfolderBase]: For 257852/265450 co-relation queries the response was YES. [2025-03-14 01:04:24,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361669 conditions, 94478 events. 56881/94478 cut-off events. For 257852/265450 co-relation queries the response was YES. Maximal size of possible extension queue 3344. Compared 869635 event pairs, 6316 based on Foata normal form. 2580/95183 useless extension candidates. Maximal degree in co-relation 160117. Up to 38349 conditions per place. [2025-03-14 01:04:24,952 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 255 selfloop transitions, 58 changer transitions 1/335 dead transitions. [2025-03-14 01:04:24,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 335 transitions, 3128 flow [2025-03-14 01:04:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:04:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:04:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2025-03-14 01:04:24,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2025-03-14 01:04:24,953 INFO L175 Difference]: Start difference. First operand has 83 places, 125 transitions, 874 flow. Second operand 7 states and 252 transitions. [2025-03-14 01:04:24,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 335 transitions, 3128 flow [2025-03-14 01:04:25,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 335 transitions, 3021 flow, removed 47 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:25,725 INFO L231 Difference]: Finished difference. Result has 89 places, 155 transitions, 1107 flow [2025-03-14 01:04:25,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1107, PETRI_PLACES=89, PETRI_TRANSITIONS=155} [2025-03-14 01:04:25,726 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2025-03-14 01:04:25,726 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 155 transitions, 1107 flow [2025-03-14 01:04:25,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2025-03-14 01:04:25,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:25,726 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:25,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-14 01:04:25,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:25,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:25,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash -331846023, now seen corresponding path program 4 times [2025-03-14 01:04:25,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:25,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540712725] [2025-03-14 01:04:25,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:25,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:25,937 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:25,947 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:25,947 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:04:25,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:26,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540712725] [2025-03-14 01:04:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540712725] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549625246] [2025-03-14 01:04:26,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:26,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:26,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:26,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:26,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:04:26,120 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:04:26,139 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:04:26,140 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:04:26,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:26,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:04:26,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:26,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:26,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549625246] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:26,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:26,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2025-03-14 01:04:26,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900919107] [2025-03-14 01:04:26,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:26,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:04:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:26,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:04:26,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:04:26,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-03-14 01:04:26,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 155 transitions, 1107 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2025-03-14 01:04:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-03-14 01:04:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:37,961 INFO L124 PetriNetUnfolderBase]: 79745/132870 cut-off events. [2025-03-14 01:04:37,962 INFO L125 PetriNetUnfolderBase]: For 381426/393442 co-relation queries the response was YES. [2025-03-14 01:04:38,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511922 conditions, 132870 events. 79745/132870 cut-off events. For 381426/393442 co-relation queries the response was YES. Maximal size of possible extension queue 4999. Compared 1284375 event pairs, 6481 based on Foata normal form. 4400/134738 useless extension candidates. Maximal degree in co-relation 245699. Up to 30396 conditions per place. [2025-03-14 01:04:39,167 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 264 selfloop transitions, 124 changer transitions 1/410 dead transitions. [2025-03-14 01:04:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 410 transitions, 3855 flow [2025-03-14 01:04:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:04:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:04:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2025-03-14 01:04:39,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2025-03-14 01:04:39,169 INFO L175 Difference]: Start difference. First operand has 89 places, 155 transitions, 1107 flow. Second operand 8 states and 293 transitions. [2025-03-14 01:04:39,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 410 transitions, 3855 flow [2025-03-14 01:04:40,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 410 transitions, 3843 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:40,636 INFO L231 Difference]: Finished difference. Result has 97 places, 191 transitions, 1613 flow [2025-03-14 01:04:40,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1613, PETRI_PLACES=97, PETRI_TRANSITIONS=191} [2025-03-14 01:04:40,636 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2025-03-14 01:04:40,636 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 191 transitions, 1613 flow [2025-03-14 01:04:40,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2025-03-14 01:04:40,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:40,637 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:40,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-14 01:04:40,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:40,837 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:40,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1122305205, now seen corresponding path program 5 times [2025-03-14 01:04:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772791338] [2025-03-14 01:04:40,838 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:40,845 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 3 equivalence classes. [2025-03-14 01:04:40,862 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-03-14 01:04:40,863 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 01:04:40,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-14 01:04:41,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:41,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772791338] [2025-03-14 01:04:41,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772791338] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:41,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258021895] [2025-03-14 01:04:41,070 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:41,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:41,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:41,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:41,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:04:41,108 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 3 equivalence classes. [2025-03-14 01:04:41,126 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-03-14 01:04:41,126 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 01:04:41,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:41,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-14 01:04:41,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-14 01:04:41,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-14 01:04:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258021895] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:41,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:41,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 7] total 15 [2025-03-14 01:04:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894297114] [2025-03-14 01:04:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:41,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:04:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:41,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:04:41,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:04:41,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2025-03-14 01:04:41,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 191 transitions, 1613 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:41,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:41,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2025-03-14 01:04:41,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand