./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:21:51,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:21:51,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:21:51,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:21:51,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:21:51,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:21:51,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:21:51,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:21:51,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:21:51,140 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:21:51,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:21:51,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:21:51,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:21:51,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:21:51,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:21:51,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:21:51,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:21:51,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:21:51,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:21:51,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:21:51,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:21:51,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:21:51,144 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a [2025-03-04 02:21:51,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:21:51,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:21:51,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:21:51,388 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:21:51,388 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:21:51,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-04 02:21:52,520 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9701e81c/a017e1f19a2e409c999485c68c1adc1e/FLAG5fec70be7 [2025-03-04 02:21:52,724 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:21:52,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-04 02:21:52,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9701e81c/a017e1f19a2e409c999485c68c1adc1e/FLAG5fec70be7 [2025-03-04 02:21:53,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9701e81c/a017e1f19a2e409c999485c68c1adc1e [2025-03-04 02:21:53,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:21:53,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:21:53,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:21:53,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:21:53,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:21:53,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afa4efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53, skipping insertion in model container [2025-03-04 02:21:53,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:21:53,246 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[3000,3013] [2025-03-04 02:21:53,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:21:53,260 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:21:53,283 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[3000,3013] [2025-03-04 02:21:53,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:21:53,298 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:21:53,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53 WrapperNode [2025-03-04 02:21:53,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:21:53,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:21:53,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:21:53,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:21:53,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,332 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 236 [2025-03-04 02:21:53,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:21:53,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:21:53,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:21:53,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:21:53,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,358 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 02:21:53,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,362 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:21:53,365 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:21:53,365 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:21:53,365 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:21:53,366 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (1/1) ... [2025-03-04 02:21:53,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:21:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:21:53,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 02:21:53,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 02:21:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:21:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:21:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:21:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:21:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 02:21:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 02:21:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-04 02:21:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-04 02:21:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-04 02:21:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:21:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:21:53,415 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:21:53,489 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:21:53,490 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:21:53,716 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:21:53,716 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:21:53,844 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:21:53,845 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:21:53,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:21:53 BoogieIcfgContainer [2025-03-04 02:21:53,845 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:21:53,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:21:53,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:21:53,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:21:53,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:21:53" (1/3) ... [2025-03-04 02:21:53,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bdd833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:21:53, skipping insertion in model container [2025-03-04 02:21:53,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:53" (2/3) ... [2025-03-04 02:21:53,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bdd833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:21:53, skipping insertion in model container [2025-03-04 02:21:53,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:21:53" (3/3) ... [2025-03-04 02:21:53,854 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2025-03-04 02:21:53,864 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:21:53,865 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-6.wvr.c that has 7 procedures, 79 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 02:21:53,866 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:21:53,927 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-03-04 02:21:53,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 83 transitions, 208 flow [2025-03-04 02:21:54,007 INFO L124 PetriNetUnfolderBase]: 5/77 cut-off events. [2025-03-04 02:21:54,009 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 02:21:54,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 77 events. 5/77 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2025-03-04 02:21:54,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 83 transitions, 208 flow [2025-03-04 02:21:54,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 76 transitions, 188 flow [2025-03-04 02:21:54,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:21:54,035 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;@3fec81a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:21:54,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-04 02:21:54,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:21:54,065 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2025-03-04 02:21:54,065 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 02:21:54,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:21:54,066 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:21:54,067 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 4 more)] === [2025-03-04 02:21:54,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:21:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash -481928060, now seen corresponding path program 1 times [2025-03-04 02:21:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:21:54,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165950601] [2025-03-04 02:21:54,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:21:54,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:21:54,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 02:21:54,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 02:21:54,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:21:54,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:21:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:21:54,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:21:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165950601] [2025-03-04 02:21:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165950601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:21:54,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:21:54,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:21:54,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674973201] [2025-03-04 02:21:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:21:54,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:21:54,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:21:54,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:21:54,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:21:54,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 83 [2025-03-04 02:21:54,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:21:54,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:21:54,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 83 [2025-03-04 02:21:54,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand