./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-5.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 9c69d99d457f457373aeec8cf091a3652593de03a43f690cddfeb4bfa1e12a5f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:15:56,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:15:56,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:15:56,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:15:56,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:15:56,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:15:56,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:15:56,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:15:56,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:15:56,886 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:15:56,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:15:56,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:15:56,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:15:56,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:15:56,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:15:56,888 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:15:56,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:15:56,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:15:56,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:15:56,889 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 -> 9c69d99d457f457373aeec8cf091a3652593de03a43f690cddfeb4bfa1e12a5f [2025-02-08 01:15:57,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:15:57,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:15:57,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:15:57,105 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:15:57,105 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:15:57,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2025-02-08 01:15:58,239 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9993b57a7/4a75639929b647559f48c947af78a6d0/FLAG57aaa95bf [2025-02-08 01:15:58,540 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:15:58,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2025-02-08 01:15:58,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9993b57a7/4a75639929b647559f48c947af78a6d0/FLAG57aaa95bf [2025-02-08 01:15:58,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9993b57a7/4a75639929b647559f48c947af78a6d0 [2025-02-08 01:15:58,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:15:58,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:15:58,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:15:58,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:15:58,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:15:58,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:15:58" (1/1) ... [2025-02-08 01:15:58,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ff894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:58, skipping insertion in model container [2025-02-08 01:15:58,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:15:58" (1/1) ... [2025-02-08 01:15:58,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:15:58,967 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-ticket-5.wvr.c[2777,2790] [2025-02-08 01:15:58,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:15:58,982 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:15:59,005 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-ticket-5.wvr.c[2777,2790] [2025-02-08 01:15:59,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:15:59,016 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:15:59,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59 WrapperNode [2025-02-08 01:15:59,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:15:59,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:15:59,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:15:59,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:15:59,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,046 INFO L138 Inliner]: procedures = 21, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 204 [2025-02-08 01:15:59,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:15:59,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:15:59,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:15:59,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:15:59,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:15:59,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:15:59,082 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:15:59,082 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:15:59,082 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:15:59,083 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (1/1) ... [2025-02-08 01:15:59,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:15:59,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:59,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:15:59,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:15:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:15:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:15:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:15:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:15:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:15:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:15:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:15:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 01:15:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 01:15:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:15:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-08 01:15:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-08 01:15:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:15:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:15:59,125 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:15:59,185 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:15:59,187 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:15:59,375 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:15:59,375 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:15:59,483 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:15:59,484 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:15:59,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:15:59 BoogieIcfgContainer [2025-02-08 01:15:59,484 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:15:59,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:15:59,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:15:59,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:15:59,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:15:58" (1/3) ... [2025-02-08 01:15:59,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6539bf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:15:59, skipping insertion in model container [2025-02-08 01:15:59,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:59" (2/3) ... [2025-02-08 01:15:59,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6539bf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:15:59, skipping insertion in model container [2025-02-08 01:15:59,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:15:59" (3/3) ... [2025-02-08 01:15:59,491 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2025-02-08 01:15:59,500 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:15:59,501 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-5.wvr.c that has 6 procedures, 68 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:15:59,501 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:15:59,574 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-02-08 01:15:59,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 71 transitions, 177 flow [2025-02-08 01:15:59,647 INFO L124 PetriNetUnfolderBase]: 4/66 cut-off events. [2025-02-08 01:15:59,649 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-02-08 01:15:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 66 events. 4/66 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2025-02-08 01:15:59,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 71 transitions, 177 flow [2025-02-08 01:15:59,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 160 flow [2025-02-08 01:15:59,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:15:59,678 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;@1367ffe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:15:59,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 01:15:59,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:15:59,712 INFO L124 PetriNetUnfolderBase]: 4/64 cut-off events. [2025-02-08 01:15:59,713 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-02-08 01:15:59,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:59,713 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, 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] [2025-02-08 01:15:59,714 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 3 more)] === [2025-02-08 01:15:59,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash -175973405, now seen corresponding path program 1 times [2025-02-08 01:15:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41980050] [2025-02-08 01:15:59,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:59,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:59,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:59,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:59,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:16:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41980050] [2025-02-08 01:16:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41980050] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984935127] [2025-02-08 01:16:00,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:00,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:00,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:00,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:00,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2025-02-08 01:16:00,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:00,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:00,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2025-02-08 01:16:00,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:07,963 INFO L124 PetriNetUnfolderBase]: 137917/176276 cut-off events. [2025-02-08 01:16:07,966 INFO L125 PetriNetUnfolderBase]: For 8334/8334 co-relation queries the response was YES. [2025-02-08 01:16:08,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354982 conditions, 176276 events. 137917/176276 cut-off events. For 8334/8334 co-relation queries the response was YES. Maximal size of possible extension queue 5266. Compared 1061556 event pairs, 40503 based on Foata normal form. 1/172922 useless extension candidates. Maximal degree in co-relation 331369. Up to 119312 conditions per place. [2025-02-08 01:16:08,834 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 81 selfloop transitions, 7 changer transitions 1/103 dead transitions. [2025-02-08 01:16:08,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 438 flow [2025-02-08 01:16:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2025-02-08 01:16:08,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6901408450704225 [2025-02-08 01:16:08,849 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 160 flow. Second operand 3 states and 147 transitions. [2025-02-08 01:16:08,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 438 flow [2025-02-08 01:16:09,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 402 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-02-08 01:16:09,056 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 179 flow [2025-02-08 01:16:09,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2025-02-08 01:16:09,062 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2025-02-08 01:16:09,062 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 179 flow [2025-02-08 01:16:09,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:09,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:09,063 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, 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] [2025-02-08 01:16:09,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:16:09,064 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 3 more)] === [2025-02-08 01:16:09,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1839810256, now seen corresponding path program 1 times [2025-02-08 01:16:09,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:09,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802094040] [2025-02-08 01:16:09,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:09,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 01:16:09,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 01:16:09,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:09,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:16:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:09,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802094040] [2025-02-08 01:16:09,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802094040] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:09,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:09,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599981800] [2025-02-08 01:16:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:09,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:09,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:09,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 71 [2025-02-08 01:16:09,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:09,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:09,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 71 [2025-02-08 01:16:09,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:21,521 INFO L124 PetriNetUnfolderBase]: 238281/303591 cut-off events. [2025-02-08 01:16:21,522 INFO L125 PetriNetUnfolderBase]: For 28203/28203 co-relation queries the response was YES. [2025-02-08 01:16:21,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655390 conditions, 303591 events. 238281/303591 cut-off events. For 28203/28203 co-relation queries the response was YES. Maximal size of possible extension queue 8436. Compared 1874864 event pairs, 165391 based on Foata normal form. 0/297321 useless extension candidates. Maximal degree in co-relation 343120. Up to 259616 conditions per place. [2025-02-08 01:16:22,662 INFO L140 encePairwiseOnDemand]: 58/71 looper letters, 92 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-02-08 01:16:22,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 481 flow [2025-02-08 01:16:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-02-08 01:16:22,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6103286384976526 [2025-02-08 01:16:22,667 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 179 flow. Second operand 3 states and 130 transitions. [2025-02-08 01:16:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 481 flow [2025-02-08 01:16:22,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:22,758 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 236 flow [2025-02-08 01:16:22,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2025-02-08 01:16:22,759 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -4 predicate places. [2025-02-08 01:16:22,759 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 236 flow [2025-02-08 01:16:22,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:22,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:22,760 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, 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] [2025-02-08 01:16:22,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:16:22,761 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 3 more)] === [2025-02-08 01:16:22,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash 916988470, now seen corresponding path program 1 times [2025-02-08 01:16:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:22,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572463399] [2025-02-08 01:16:22,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:22,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 01:16:22,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 01:16:22,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:22,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:16:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572463399] [2025-02-08 01:16:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572463399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 01:16:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205667307] [2025-02-08 01:16:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 01:16:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:23,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 01:16:23,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:16:23,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2025-02-08 01:16:23,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 236 flow. Second operand has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:23,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:23,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2025-02-08 01:16:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:29,717 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([482] L45-1-->L46-3: Formula: (= v_~x~0_14 0) InVars {} OutVars{~x~0=v_~x~0_14} AuxVars[] AssignedVars[~x~0][115], [18#thread2ENTRYtrue, 74#L112-1true, 73#L86-3true, Black: 88#(= (mod ~b~0 256) 0), 13#L46-3true, 100#(<= (+ 3 ~s~0) ~t~0), 22#L66-3true, Black: 90#true, 92#(not (= ~x~0 1)), 23#thread4EXITtrue]) [2025-02-08 01:16:29,719 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2025-02-08 01:16:29,719 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2025-02-08 01:16:29,719 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2025-02-08 01:16:29,719 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2025-02-08 01:16:30,523 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([482] L45-1-->L46-3: Formula: (= v_~x~0_14 0) InVars {} OutVars{~x~0=v_~x~0_14} AuxVars[] AssignedVars[~x~0][115], [4#L56-3true, 74#L112-1true, 73#L86-3true, 3#thread4ENTRYtrue, Black: 88#(= (mod ~b~0 256) 0), 100#(<= (+ 3 ~s~0) ~t~0), 13#L46-3true, 64#thread3EXITtrue, Black: 90#true, 92#(not (= ~x~0 1))]) [2025-02-08 01:16:30,524 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,524 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,524 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,524 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,996 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([482] L45-1-->L46-3: Formula: (= v_~x~0_14 0) InVars {} OutVars{~x~0=v_~x~0_14} AuxVars[] AssignedVars[~x~0][115], [9#thread3ENTRYtrue, 4#L56-3true, 74#L112-1true, 73#L86-3true, Black: 88#(= (mod ~b~0 256) 0), 13#L46-3true, 100#(<= (+ 3 ~s~0) ~t~0), Black: 90#true, 92#(not (= ~x~0 1)), 23#thread4EXITtrue]) [2025-02-08 01:16:30,997 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,997 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,997 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:30,997 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is not cut-off event [2025-02-08 01:16:31,125 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([482] L45-1-->L46-3: Formula: (= v_~x~0_14 0) InVars {} OutVars{~x~0=v_~x~0_14} AuxVars[] AssignedVars[~x~0][195], [4#L56-3true, 101#(<= (+ ~s~0 4) ~t~0), 74#L112-1true, 73#L86-3true, Black: 88#(= (mod ~b~0 256) 0), 64#thread3EXITtrue, 13#L46-3true, 19#L72-1true, Black: 90#true, 92#(not (= ~x~0 1))]) [2025-02-08 01:16:31,126 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2025-02-08 01:16:31,126 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2025-02-08 01:16:31,126 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2025-02-08 01:16:31,126 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event