./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! 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-?-551b009-m [2025-01-09 16:41:34,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:41:34,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:41:34,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:41:34,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:41:34,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:41:34,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:41:34,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:41:34,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:41:34,748 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:41:34,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:41:34,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:41:34,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:41:34,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:41:34,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:41:34,749 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:41:34,749 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:41:34,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:41:34,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:41:34,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:41:34,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:41:34,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:41:34,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:41:34,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:41:34,752 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2025-01-09 16:41:34,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:41:34,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:41:34,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:41:34,979 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:41:34,979 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:41:34,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-01-09 16:41:36,274 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b2321b00/26a98f187cab480e8fa2c2b70b04f629/FLAG833aac164 [2025-01-09 16:41:36,479 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:41:36,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-01-09 16:41:36,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b2321b00/26a98f187cab480e8fa2c2b70b04f629/FLAG833aac164 [2025-01-09 16:41:36,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b2321b00/26a98f187cab480e8fa2c2b70b04f629 [2025-01-09 16:41:36,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:41:36,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:41:36,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:41:36,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:41:36,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:41:36,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5859488c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36, skipping insertion in model container [2025-01-09 16:41:36,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:41:36,636 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-01-09 16:41:36,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:41:36,651 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:41:36,669 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-01-09 16:41:36,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:41:36,683 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:41:36,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36 WrapperNode [2025-01-09 16:41:36,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:41:36,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:41:36,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:41:36,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:41:36,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,711 INFO L138 Inliner]: procedures = 19, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-01-09 16:41:36,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:41:36,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:41:36,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:41:36,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:41:36,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,733 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]. [2025-01-09 16:41:36,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,738 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:41:36,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:41:36,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:41:36,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:41:36,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (1/1) ... [2025-01-09 16:41:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:41:36,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:36,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:41:36,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:41:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:41:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:41:36,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:41:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:41:36,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:41:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:41:36,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:41:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:41:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:41:36,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:41:36,799 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:41:36,866 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:41:36,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:41:36,999 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:41:36,999 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:41:37,083 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:41:37,083 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:41:37,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:41:37 BoogieIcfgContainer [2025-01-09 16:41:37,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:41:37,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:41:37,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:41:37,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:41:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:41:36" (1/3) ... [2025-01-09 16:41:37,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c46da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:41:37, skipping insertion in model container [2025-01-09 16:41:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:41:36" (2/3) ... [2025-01-09 16:41:37,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c46da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:41:37, skipping insertion in model container [2025-01-09 16:41:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:41:37" (3/3) ... [2025-01-09 16:41:37,090 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2025-01-09 16:41:37,099 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:41:37,100 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. [2025-01-09 16:41:37,100 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:41:37,139 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-09 16:41:37,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2025-01-09 16:41:37,185 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2025-01-09 16:41:37,186 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:41:37,188 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 7. Compared 88 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. [2025-01-09 16:41:37,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2025-01-09 16:41:37,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2025-01-09 16:41:37,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:41:37,202 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;@1720e578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:41:37,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:41:37,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:41:37,211 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2025-01-09 16:41:37,211 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:41:37,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:37,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:37,212 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)] === [2025-01-09 16:41:37,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash 758819552, now seen corresponding path program 1 times [2025-01-09 16:41:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586061106] [2025-01-09 16:41:37,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:37,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:41:37,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:41:37,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:37,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586061106] [2025-01-09 16:41:37,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586061106] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:37,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:37,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:41:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034673654] [2025-01-09 16:41:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:41:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:37,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:41:37,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:41:37,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:41:37,420 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) [2025-01-09 16:41:37,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:37,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:41:37,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:37,740 INFO L124 PetriNetUnfolderBase]: 996/1607 cut-off events. [2025-01-09 16:41:37,740 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-01-09 16:41:37,747 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 102. Compared 8157 event pairs, 94 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 2669. Up to 1177 conditions per place. [2025-01-09 16:41:37,758 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 32 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2025-01-09 16:41:37,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 223 flow [2025-01-09 16:41:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:41:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:41:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-01-09 16:41:37,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2025-01-09 16:41:37,771 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 95 transitions. [2025-01-09 16:41:37,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 223 flow [2025-01-09 16:41:37,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:41:37,777 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2025-01-09 16:41:37,779 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} [2025-01-09 16:41:37,781 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2025-01-09 16:41:37,781 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2025-01-09 16:41:37,782 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) [2025-01-09 16:41:37,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:37,782 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] [2025-01-09 16:41:37,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:41:37,782 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)] === [2025-01-09 16:41:37,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1435997156, now seen corresponding path program 1 times [2025-01-09 16:41:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:37,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906340727] [2025-01-09 16:41:37,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:37,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:37,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:41:37,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:41:37,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:37,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:37,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906340727] [2025-01-09 16:41:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906340727] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:37,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:37,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:41:37,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273569910] [2025-01-09 16:41:37,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:37,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:41:37,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:37,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:41:37,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:41:37,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2025-01-09 16:41:37,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-01-09 16:41:37,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:37,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2025-01-09 16:41:37,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:38,069 INFO L124 PetriNetUnfolderBase]: 891/1473 cut-off events. [2025-01-09 16:41:38,070 INFO L125 PetriNetUnfolderBase]: For 226/310 co-relation queries the response was YES. [2025-01-09 16:41:38,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1473 events. 891/1473 cut-off events. For 226/310 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7890 event pairs, 153 based on Foata normal form. 47/1320 useless extension candidates. Maximal degree in co-relation 1791. Up to 595 conditions per place. [2025-01-09 16:41:38,083 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2025-01-09 16:41:38,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 225 flow [2025-01-09 16:41:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:41:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:41:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-01-09 16:41:38,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2025-01-09 16:41:38,085 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 98 transitions. [2025-01-09 16:41:38,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 225 flow [2025-01-09 16:41:38,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:41:38,088 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2025-01-09 16:41:38,089 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} [2025-01-09 16:41:38,090 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2025-01-09 16:41:38,090 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2025-01-09 16:41:38,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-01-09 16:41:38,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:38,090 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] [2025-01-09 16:41:38,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:41:38,090 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)] === [2025-01-09 16:41:38,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1603329931, now seen corresponding path program 1 times [2025-01-09 16:41:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:38,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358175022] [2025-01-09 16:41:38,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:38,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 16:41:38,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:41:38,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:38,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:38,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358175022] [2025-01-09 16:41:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358175022] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:38,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:41:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742537037] [2025-01-09 16:41:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:38,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:41:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:38,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:41:38,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:41:38,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2025-01-09 16:41:38,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:38,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:38,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2025-01-09 16:41:38,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:38,302 INFO L124 PetriNetUnfolderBase]: 930/1659 cut-off events. [2025-01-09 16:41:38,302 INFO L125 PetriNetUnfolderBase]: For 345/369 co-relation queries the response was YES. [2025-01-09 16:41:38,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 1659 events. 930/1659 cut-off events. For 345/369 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9831 event pairs, 148 based on Foata normal form. 57/1451 useless extension candidates. Maximal degree in co-relation 1763. Up to 652 conditions per place. [2025-01-09 16:41:38,324 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 32 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2025-01-09 16:41:38,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 237 flow [2025-01-09 16:41:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:41:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:41:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-01-09 16:41:38,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2025-01-09 16:41:38,325 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 97 transitions. [2025-01-09 16:41:38,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 237 flow [2025-01-09 16:41:38,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:41:38,327 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2025-01-09 16:41:38,327 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} [2025-01-09 16:41:38,328 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2025-01-09 16:41:38,328 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2025-01-09 16:41:38,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:38,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:38,328 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] [2025-01-09 16:41:38,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:41:38,328 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)] === [2025-01-09 16:41:38,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -678070517, now seen corresponding path program 1 times [2025-01-09 16:41:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476199422] [2025-01-09 16:41:38,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:38,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:41:38,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:41:38,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:38,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:41:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476199422] [2025-01-09 16:41:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476199422] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:38,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:38,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:41:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123275621] [2025-01-09 16:41:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:38,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:41:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:38,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:41:38,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:41:38,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2025-01-09 16:41:38,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-01-09 16:41:38,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:38,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2025-01-09 16:41:38,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:38,555 INFO L124 PetriNetUnfolderBase]: 1150/1974 cut-off events. [2025-01-09 16:41:38,555 INFO L125 PetriNetUnfolderBase]: For 763/819 co-relation queries the response was YES. [2025-01-09 16:41:38,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4510 conditions, 1974 events. 1150/1974 cut-off events. For 763/819 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11452 event pairs, 264 based on Foata normal form. 50/1638 useless extension candidates. Maximal degree in co-relation 1639. Up to 683 conditions per place. [2025-01-09 16:41:38,584 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 33 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-01-09 16:41:38,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 255 flow [2025-01-09 16:41:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:41:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:41:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-01-09 16:41:38,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2025-01-09 16:41:38,586 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 96 transitions. [2025-01-09 16:41:38,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 255 flow [2025-01-09 16:41:38,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:41:38,587 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2025-01-09 16:41:38,587 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} [2025-01-09 16:41:38,588 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2025-01-09 16:41:38,588 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2025-01-09 16:41:38,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-01-09 16:41:38,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:38,588 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] [2025-01-09 16:41:38,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:41:38,588 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)] === [2025-01-09 16:41:38,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 9462531, now seen corresponding path program 1 times [2025-01-09 16:41:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:38,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34530874] [2025-01-09 16:41:38,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:38,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 16:41:38,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:41:38,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:38,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:41:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34530874] [2025-01-09 16:41:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34530874] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:38,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:41:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104166904] [2025-01-09 16:41:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:38,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:41:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:38,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:41:38,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:41:38,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2025-01-09 16:41:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2025-01-09 16:41:38,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:38,845 INFO L124 PetriNetUnfolderBase]: 1312/2151 cut-off events. [2025-01-09 16:41:38,846 INFO L125 PetriNetUnfolderBase]: For 1067/1123 co-relation queries the response was YES. [2025-01-09 16:41:38,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 2151 events. 1312/2151 cut-off events. For 1067/1123 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12233 event pairs, 285 based on Foata normal form. 30/1861 useless extension candidates. Maximal degree in co-relation 1892. Up to 918 conditions per place. [2025-01-09 16:41:38,858 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 34 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2025-01-09 16:41:38,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 260 flow [2025-01-09 16:41:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:41:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:41:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-01-09 16:41:38,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2025-01-09 16:41:38,859 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 3 states and 94 transitions. [2025-01-09 16:41:38,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 260 flow [2025-01-09 16:41:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:41:38,860 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 154 flow [2025-01-09 16:41:38,861 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2025-01-09 16:41:38,861 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2025-01-09 16:41:38,861 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 154 flow [2025-01-09 16:41:38,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:38,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:38,862 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] [2025-01-09 16:41:38,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:41:38,862 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)] === [2025-01-09 16:41:38,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -906670301, now seen corresponding path program 1 times [2025-01-09 16:41:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087823166] [2025-01-09 16:41:38,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:38,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 16:41:38,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:41:38,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:38,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:41:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087823166] [2025-01-09 16:41:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087823166] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:41:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041344294] [2025-01-09 16:41:39,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:39,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:41:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:39,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:41:39,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:41:39,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2025-01-09 16:41:39,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-01-09 16:41:39,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:39,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2025-01-09 16:41:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:39,341 INFO L124 PetriNetUnfolderBase]: 1995/3193 cut-off events. [2025-01-09 16:41:39,342 INFO L125 PetriNetUnfolderBase]: For 1751/2025 co-relation queries the response was YES. [2025-01-09 16:41:39,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 3193 events. 1995/3193 cut-off events. For 1751/2025 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17441 event pairs, 516 based on Foata normal form. 101/2857 useless extension candidates. Maximal degree in co-relation 3124. Up to 1040 conditions per place. [2025-01-09 16:41:39,360 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 49 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2025-01-09 16:41:39,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 358 flow [2025-01-09 16:41:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:41:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:41:39,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-01-09 16:41:39,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2025-01-09 16:41:39,362 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 154 flow. Second operand 4 states and 128 transitions. [2025-01-09 16:41:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 358 flow [2025-01-09 16:41:39,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:41:39,366 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 182 flow [2025-01-09 16:41:39,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-01-09 16:41:39,367 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-01-09 16:41:39,368 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 182 flow [2025-01-09 16:41:39,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-01-09 16:41:39,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:39,368 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, 1] [2025-01-09 16:41:39,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:41:39,369 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)] === [2025-01-09 16:41:39,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 801964915, now seen corresponding path program 1 times [2025-01-09 16:41:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756077174] [2025-01-09 16:41:39,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:39,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:41:39,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:41:39,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:39,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:41:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756077174] [2025-01-09 16:41:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756077174] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:41:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550521974] [2025-01-09 16:41:39,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:39,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:41:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:39,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:41:39,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:41:39,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2025-01-09 16:41:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-01-09 16:41:39,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:39,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2025-01-09 16:41:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:39,939 INFO L124 PetriNetUnfolderBase]: 3325/5357 cut-off events. [2025-01-09 16:41:39,939 INFO L125 PetriNetUnfolderBase]: For 4628/4867 co-relation queries the response was YES. [2025-01-09 16:41:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14365 conditions, 5357 events. 3325/5357 cut-off events. For 4628/4867 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 34562 event pairs, 890 based on Foata normal form. 212/4975 useless extension candidates. Maximal degree in co-relation 7542. Up to 1618 conditions per place. [2025-01-09 16:41:39,967 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 55 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-01-09 16:41:39,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 444 flow [2025-01-09 16:41:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:41:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:41:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-01-09 16:41:39,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2025-01-09 16:41:39,968 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 182 flow. Second operand 4 states and 128 transitions. [2025-01-09 16:41:39,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 444 flow [2025-01-09 16:41:39,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-01-09 16:41:39,974 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 212 flow [2025-01-09 16:41:39,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2025-01-09 16:41:39,975 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2025-01-09 16:41:39,975 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 212 flow [2025-01-09 16:41:39,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-01-09 16:41:39,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:39,976 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, 1] [2025-01-09 16:41:39,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:41:39,976 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)] === [2025-01-09 16:41:39,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -916551385, now seen corresponding path program 1 times [2025-01-09 16:41:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438150121] [2025-01-09 16:41:39,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:39,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 16:41:40,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 16:41:40,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:40,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 16:41:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438150121] [2025-01-09 16:41:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438150121] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:41:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212271341] [2025-01-09 16:41:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:40,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:41:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:40,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:41:40,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:41:40,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2025-01-09 16:41:40,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-01-09 16:41:40,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:40,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2025-01-09 16:41:40,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:40,818 INFO L124 PetriNetUnfolderBase]: 5662/8815 cut-off events. [2025-01-09 16:41:40,819 INFO L125 PetriNetUnfolderBase]: For 14587/15469 co-relation queries the response was YES. [2025-01-09 16:41:40,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26866 conditions, 8815 events. 5662/8815 cut-off events. For 14587/15469 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 58236 event pairs, 1741 based on Foata normal form. 410/8043 useless extension candidates. Maximal degree in co-relation 15482. Up to 2671 conditions per place. [2025-01-09 16:41:40,862 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 59 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2025-01-09 16:41:40,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 524 flow [2025-01-09 16:41:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:41:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:41:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-01-09 16:41:40,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7440476190476191 [2025-01-09 16:41:40,864 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 212 flow. Second operand 4 states and 125 transitions. [2025-01-09 16:41:40,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 524 flow [2025-01-09 16:41:40,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 518 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-01-09 16:41:40,868 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 240 flow [2025-01-09 16:41:40,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-01-09 16:41:40,869 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2025-01-09 16:41:40,870 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 240 flow [2025-01-09 16:41:40,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-01-09 16:41:40,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:40,870 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] [2025-01-09 16:41:40,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:41:40,871 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)] === [2025-01-09 16:41:40,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 34075833, now seen corresponding path program 1 times [2025-01-09 16:41:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390629770] [2025-01-09 16:41:40,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:40,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 16:41:40,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:40,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:40,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:41:41,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390629770] [2025-01-09 16:41:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390629770] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620745993] [2025-01-09 16:41:41,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:41:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:41,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:41,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:41:41,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 16:41:41,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:41,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:41,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:41,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:41:41,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:41:41,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:41:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620745993] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:41,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-01-09 16:41:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529121710] [2025-01-09 16:41:41,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:41,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:41:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:41,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:41:41,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:41:41,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:41:41,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:41,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:41,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:41:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:42,954 INFO L124 PetriNetUnfolderBase]: 13709/22568 cut-off events. [2025-01-09 16:41:42,954 INFO L125 PetriNetUnfolderBase]: For 30411/32265 co-relation queries the response was YES. [2025-01-09 16:41:43,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69472 conditions, 22568 events. 13709/22568 cut-off events. For 30411/32265 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 162115 event pairs, 2553 based on Foata normal form. 878/23132 useless extension candidates. Maximal degree in co-relation 17508. Up to 8575 conditions per place. [2025-01-09 16:41:43,214 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 99 selfloop transitions, 22 changer transitions 1/140 dead transitions. [2025-01-09 16:41:43,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 140 transitions, 907 flow [2025-01-09 16:41:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:41:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:41:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-01-09 16:41:43,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2025-01-09 16:41:43,217 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 240 flow. Second operand 5 states and 176 transitions. [2025-01-09 16:41:43,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 140 transitions, 907 flow [2025-01-09 16:41:43,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 140 transitions, 899 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-01-09 16:41:43,227 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 381 flow [2025-01-09 16:41:43,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2025-01-09 16:41:43,229 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2025-01-09 16:41:43,229 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 381 flow [2025-01-09 16:41:43,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:43,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:43,230 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] [2025-01-09 16:41:43,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:41:43,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:43,431 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)] === [2025-01-09 16:41:43,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash -822782373, now seen corresponding path program 2 times [2025-01-09 16:41:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941560166] [2025-01-09 16:41:43,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:43,443 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:43,470 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:43,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:43,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941560166] [2025-01-09 16:41:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941560166] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167971591] [2025-01-09 16:41:43,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:43,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:43,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:43,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:41:43,758 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:43,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:43,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:43,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:43,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:41:43,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:43,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167971591] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:43,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:43,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-01-09 16:41:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748504872] [2025-01-09 16:41:43,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:43,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:41:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:43,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:41:43,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:41:43,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:41:43,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 381 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) [2025-01-09 16:41:43,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:43,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:41:43,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:46,869 INFO L124 PetriNetUnfolderBase]: 25739/42364 cut-off events. [2025-01-09 16:41:46,869 INFO L125 PetriNetUnfolderBase]: For 76297/79974 co-relation queries the response was YES. [2025-01-09 16:41:46,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145325 conditions, 42364 events. 25739/42364 cut-off events. For 76297/79974 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 339341 event pairs, 3101 based on Foata normal form. 1759/43565 useless extension candidates. Maximal degree in co-relation 36540. Up to 14115 conditions per place. [2025-01-09 16:41:47,117 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 123 selfloop transitions, 46 changer transitions 1/188 dead transitions. [2025-01-09 16:41:47,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 188 transitions, 1337 flow [2025-01-09 16:41:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:41:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:41:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2025-01-09 16:41:47,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2025-01-09 16:41:47,119 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 381 flow. Second operand 6 states and 215 transitions. [2025-01-09 16:41:47,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 188 transitions, 1337 flow [2025-01-09 16:41:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 188 transitions, 1253 flow, removed 42 selfloop flow, removed 0 redundant places. [2025-01-09 16:41:47,147 INFO L231 Difference]: Finished difference. Result has 70 places, 95 transitions, 569 flow [2025-01-09 16:41:47,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2025-01-09 16:41:47,147 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2025-01-09 16:41:47,147 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 569 flow [2025-01-09 16:41:47,147 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) [2025-01-09 16:41:47,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:47,148 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] [2025-01-09 16:41:47,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:47,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:47,349 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)] === [2025-01-09 16:41:47,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:47,350 INFO L85 PathProgramCache]: Analyzing trace with hash -329200279, now seen corresponding path program 3 times [2025-01-09 16:41:47,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:47,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109291298] [2025-01-09 16:41:47,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:47,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:47,372 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:47,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:47,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:47,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109291298] [2025-01-09 16:41:47,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109291298] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819350330] [2025-01-09 16:41:47,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:47,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:47,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:41:47,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:47,534 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:47,534 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:47,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:47,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:41:47,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:47,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:47,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819350330] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:47,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:47,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-01-09 16:41:47,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842839585] [2025-01-09 16:41:47,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:47,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:41:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:47,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:41:47,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:41:47,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:41:47,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 569 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) [2025-01-09 16:41:47,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:47,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:41:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:52,747 INFO L124 PetriNetUnfolderBase]: 41804/69035 cut-off events. [2025-01-09 16:41:52,747 INFO L125 PetriNetUnfolderBase]: For 132202/138073 co-relation queries the response was YES. [2025-01-09 16:41:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239811 conditions, 69035 events. 41804/69035 cut-off events. For 132202/138073 co-relation queries the response was YES. Maximal size of possible extension queue 2253. Compared 597060 event pairs, 4343 based on Foata normal form. 2876/70860 useless extension candidates. Maximal degree in co-relation 63722. Up to 20701 conditions per place. [2025-01-09 16:41:53,225 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 146 selfloop transitions, 76 changer transitions 1/241 dead transitions. [2025-01-09 16:41:53,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 241 transitions, 1790 flow [2025-01-09 16:41:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:41:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:41:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2025-01-09 16:41:53,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2025-01-09 16:41:53,228 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 569 flow. Second operand 7 states and 254 transitions. [2025-01-09 16:41:53,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 241 transitions, 1790 flow [2025-01-09 16:41:53,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1683 flow, removed 47 selfloop flow, removed 1 redundant places. [2025-01-09 16:41:53,281 INFO L231 Difference]: Finished difference. Result has 76 places, 125 transitions, 847 flow [2025-01-09 16:41:53,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2025-01-09 16:41:53,281 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2025-01-09 16:41:53,281 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions, 847 flow [2025-01-09 16:41:53,282 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) [2025-01-09 16:41:53,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:53,282 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] [2025-01-09 16:41:53,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:53,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:53,486 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)] === [2025-01-09 16:41:53,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1516090157, now seen corresponding path program 4 times [2025-01-09 16:41:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:53,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249492080] [2025-01-09 16:41:53,486 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:53,492 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:53,503 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:53,504 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:53,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249492080] [2025-01-09 16:41:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249492080] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776128495] [2025-01-09 16:41:53,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:53,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:53,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:53,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:53,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:41:53,877 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-01-09 16:41:53,894 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:41:53,894 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:53,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:53,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:41:53,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:53,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776128495] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:53,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:53,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-01-09 16:41:53,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250356615] [2025-01-09 16:41:53,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:53,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:41:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:53,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:41:53,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:41:54,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:41:54,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions, 847 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) [2025-01-09 16:41:54,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:54,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:41:54,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:42:00,758 INFO L124 PetriNetUnfolderBase]: 53552/87556 cut-off events. [2025-01-09 16:42:00,758 INFO L125 PetriNetUnfolderBase]: For 206529/213714 co-relation queries the response was YES. [2025-01-09 16:42:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320643 conditions, 87556 events. 53552/87556 cut-off events. For 206529/213714 co-relation queries the response was YES. Maximal size of possible extension queue 2791. Compared 775939 event pairs, 10985 based on Foata normal form. 3554/89313 useless extension candidates. Maximal degree in co-relation 95441. Up to 58742 conditions per place. [2025-01-09 16:42:01,372 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 185 selfloop transitions, 54 changer transitions 1/258 dead transitions. [2025-01-09 16:42:01,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 258 transitions, 2128 flow [2025-01-09 16:42:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:42:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:42:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2025-01-09 16:42:01,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8373015873015873 [2025-01-09 16:42:01,373 INFO L175 Difference]: Start difference. First operand has 76 places, 125 transitions, 847 flow. Second operand 6 states and 211 transitions. [2025-01-09 16:42:01,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 258 transitions, 2128 flow [2025-01-09 16:42:01,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 258 transitions, 2014 flow, removed 40 selfloop flow, removed 1 redundant places. [2025-01-09 16:42:01,478 INFO L231 Difference]: Finished difference. Result has 83 places, 175 transitions, 1352 flow [2025-01-09 16:42:01,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1352, PETRI_PLACES=83, PETRI_TRANSITIONS=175} [2025-01-09 16:42:01,478 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2025-01-09 16:42:01,478 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 175 transitions, 1352 flow [2025-01-09 16:42:01,479 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) [2025-01-09 16:42:01,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:01,479 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] [2025-01-09 16:42:01,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:42:01,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 16:42:01,682 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)] === [2025-01-09 16:42:01,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1685983223, now seen corresponding path program 5 times [2025-01-09 16:42:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397218801] [2025-01-09 16:42:01,683 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:42:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:01,689 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 3 equivalence classes. [2025-01-09 16:42:01,718 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:42:01,719 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:42:01,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:01,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397218801] [2025-01-09 16:42:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397218801] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:42:01,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876928680] [2025-01-09 16:42:01,865 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:42:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:42:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:42:01,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:42:01,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:42:01,907 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 3 equivalence classes. [2025-01-09 16:42:01,926 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 16:42:01,926 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:42:01,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:01,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:42:01,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:42:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:01,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:42:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:02,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876928680] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:42:02,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:42:02,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2025-01-09 16:42:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490578817] [2025-01-09 16:42:02,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:42:02,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:42:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:02,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:42:02,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:42:02,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-01-09 16:42:02,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 175 transitions, 1352 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) [2025-01-09 16:42:02,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:02,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-01-09 16:42:02,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:42:12,394 INFO L124 PetriNetUnfolderBase]: 72133/118534 cut-off events. [2025-01-09 16:42:12,394 INFO L125 PetriNetUnfolderBase]: For 288675/299101 co-relation queries the response was YES. [2025-01-09 16:42:12,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434100 conditions, 118534 events. 72133/118534 cut-off events. For 288675/299101 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 1098413 event pairs, 6911 based on Foata normal form. 5063/121549 useless extension candidates. Maximal degree in co-relation 146593. Up to 23338 conditions per place. [2025-01-09 16:42:13,468 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 170 selfloop transitions, 162 changer transitions 1/351 dead transitions. [2025-01-09 16:42:13,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 351 transitions, 2954 flow [2025-01-09 16:42:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:42:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:42:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2025-01-09 16:42:13,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2025-01-09 16:42:13,471 INFO L175 Difference]: Start difference. First operand has 83 places, 175 transitions, 1352 flow. Second operand 8 states and 293 transitions. [2025-01-09 16:42:13,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 351 transitions, 2954 flow [2025-01-09 16:42:13,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 351 transitions, 2942 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-09 16:42:13,667 INFO L231 Difference]: Finished difference. Result has 91 places, 211 transitions, 1953 flow [2025-01-09 16:42:13,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1953, PETRI_PLACES=91, PETRI_TRANSITIONS=211} [2025-01-09 16:42:13,667 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2025-01-09 16:42:13,667 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 211 transitions, 1953 flow [2025-01-09 16:42:13,668 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) [2025-01-09 16:42:13,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:13,668 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] [2025-01-09 16:42:13,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:42:13,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 16:42:13,868 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:42:13,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1296691927, now seen corresponding path program 6 times [2025-01-09 16:42:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829842843] [2025-01-09 16:42:13,869 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:42:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:13,880 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 2 equivalence classes. [2025-01-09 16:42:13,892 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 44 of 48 statements. [2025-01-09 16:42:13,895 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-09 16:42:13,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:42:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829842843] [2025-01-09 16:42:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829842843] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:42:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:42:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:42:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574858376] [2025-01-09 16:42:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:42:14,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:42:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:14,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:42:14,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:42:14,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2025-01-09 16:42:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 211 transitions, 1953 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:42:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2025-01-09 16:42:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand