./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/pthread-wmm/mix044_tso.oepc.i -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 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:32:16,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:32:16,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:32:16,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:32:16,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:32:16,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:32:16,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:32:16,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:32:16,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:32:16,546 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:32:16,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:32:16,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:32:16,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:32:16,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:32:16,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:32:16,547 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:32:16,548 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:16,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:32:16,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:32:16,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:32:16,549 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 -> 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 [2025-03-13 21:32:16,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:32:16,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:32:16,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:32:16,781 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:32:16,781 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:32:16,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2025-03-13 21:32:17,914 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd0bf62/32425035ce154d43b704ce24c8998b2d/FLAG78774db2a [2025-03-13 21:32:18,193 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:32:18,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2025-03-13 21:32:18,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd0bf62/32425035ce154d43b704ce24c8998b2d/FLAG78774db2a [2025-03-13 21:32:18,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0fd0bf62/32425035ce154d43b704ce24c8998b2d [2025-03-13 21:32:18,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:32:18,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:32:18,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:18,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:32:18,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:32:18,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c64cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18, skipping insertion in model container [2025-03-13 21:32:18,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:32:18,648 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/pthread-wmm/mix044_tso.oepc.i[949,962] [2025-03-13 21:32:18,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:18,825 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:32:18,833 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/pthread-wmm/mix044_tso.oepc.i[949,962] [2025-03-13 21:32:18,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:18,923 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:32:18,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18 WrapperNode [2025-03-13 21:32:18,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:18,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:18,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:32:18,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:32:18,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,973 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2025-03-13 21:32:18,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:18,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:32:18,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:32:18,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:32:18,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:18,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,003 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]. [2025-03-13 21:32:19,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,016 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:32:19,025 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:32:19,025 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:32:19,025 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:32:19,026 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (1/1) ... [2025-03-13 21:32:19,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:19,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:32:19,068 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) [2025-03-13 21:32:19,071 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 [2025-03-13 21:32:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:32:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:32:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:32:19,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:32:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:32:19,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:32:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:32:19,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:32:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:32:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:32:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:32:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:32:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:32:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:32:19,093 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:32:19,198 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:32:19,200 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:32:19,478 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:32:19,478 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:32:19,479 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:32:19,718 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:32:19,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:19 BoogieIcfgContainer [2025-03-13 21:32:19,720 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:32:19,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:32:19,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:32:19,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:32:19,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:32:18" (1/3) ... [2025-03-13 21:32:19,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9fa02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:19, skipping insertion in model container [2025-03-13 21:32:19,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:18" (2/3) ... [2025-03-13 21:32:19,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9fa02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:19, skipping insertion in model container [2025-03-13 21:32:19,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:19" (3/3) ... [2025-03-13 21:32:19,728 INFO L128 eAbstractionObserver]: Analyzing ICFG mix044_tso.oepc.i [2025-03-13 21:32:19,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:32:19,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix044_tso.oepc.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:32:19,741 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:32:19,785 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:32:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-13 21:32:19,837 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-13 21:32:19,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:19,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-13 21:32:19,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-13 21:32:19,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-13 21:32:19,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:32:19,865 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;@6bf99d3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:32:19,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:32:19,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:32:19,871 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-13 21:32:19,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:19,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:19,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-13 21:32:19,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:19,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -154655250, now seen corresponding path program 1 times [2025-03-13 21:32:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036049791] [2025-03-13 21:32:19,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:19,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:32:19,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:32:19,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:19,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:20,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036049791] [2025-03-13 21:32:20,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036049791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:20,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:32:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289644867] [2025-03-13 21:32:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:20,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:32:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:20,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:32:20,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:32:20,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-13 21:32:20,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-03-13 21:32:20,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:20,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-13 21:32:20,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:24,566 INFO L124 PetriNetUnfolderBase]: 46139/61039 cut-off events. [2025-03-13 21:32:24,566 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2025-03-13 21:32:24,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122043 conditions, 61039 events. 46139/61039 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 366500 event pairs, 5709 based on Foata normal form. 1692/62495 useless extension candidates. Maximal degree in co-relation 122031. Up to 52371 conditions per place. [2025-03-13 21:32:24,960 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 61 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2025-03-13 21:32:24,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 292 flow [2025-03-13 21:32:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:32:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:32:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-13 21:32:24,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-03-13 21:32:24,974 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 101 transitions. [2025-03-13 21:32:24,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 292 flow [2025-03-13 21:32:24,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:32:24,983 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-13 21:32:24,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-13 21:32:24,989 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-13 21:32:24,990 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-13 21:32:24,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-03-13 21:32:24,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:24,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:24,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:32:24,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:24,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -954912937, now seen corresponding path program 1 times [2025-03-13 21:32:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:24,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380363640] [2025-03-13 21:32:24,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:25,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:32:25,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:32:25,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:25,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:25,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380363640] [2025-03-13 21:32:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380363640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:25,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:32:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051536015] [2025-03-13 21:32:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:25,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:32:25,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:25,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:32:25,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:32:25,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:25,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-13 21:32:25,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:25,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:25,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:32,798 INFO L124 PetriNetUnfolderBase]: 78608/104741 cut-off events. [2025-03-13 21:32:32,798 INFO L125 PetriNetUnfolderBase]: For 3851/3851 co-relation queries the response was YES. [2025-03-13 21:32:33,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212298 conditions, 104741 events. 78608/104741 cut-off events. For 3851/3851 co-relation queries the response was YES. Maximal size of possible extension queue 2975. Compared 665840 event pairs, 12059 based on Foata normal form. 0/102831 useless extension candidates. Maximal degree in co-relation 212288. Up to 60645 conditions per place. [2025-03-13 21:32:33,274 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 82 selfloop transitions, 14 changer transitions 168/269 dead transitions. [2025-03-13 21:32:33,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 269 transitions, 1110 flow [2025-03-13 21:32:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:32:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:32:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2025-03-13 21:32:33,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-13 21:32:33,279 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 375 transitions. [2025-03-13 21:32:33,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 269 transitions, 1110 flow [2025-03-13 21:32:33,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 269 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:32:33,290 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 272 flow [2025-03-13 21:32:33,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2025-03-13 21:32:33,291 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2025-03-13 21:32:33,291 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 272 flow [2025-03-13 21:32:33,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-13 21:32:33,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:33,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:33,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:32:33,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:33,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 153693811, now seen corresponding path program 1 times [2025-03-13 21:32:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267610535] [2025-03-13 21:32:33,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:33,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:32:33,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:32:33,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:33,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267610535] [2025-03-13 21:32:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267610535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:33,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:33,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:32:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358904677] [2025-03-13 21:32:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:33,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:32:33,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:33,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:32:33,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:32:33,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:33,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:40,440 INFO L124 PetriNetUnfolderBase]: 57470/76759 cut-off events. [2025-03-13 21:32:40,441 INFO L125 PetriNetUnfolderBase]: For 138233/138238 co-relation queries the response was YES. [2025-03-13 21:32:40,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270604 conditions, 76759 events. 57470/76759 cut-off events. For 138233/138238 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 455071 event pairs, 12725 based on Foata normal form. 1904/78621 useless extension candidates. Maximal degree in co-relation 270583. Up to 38828 conditions per place. [2025-03-13 21:32:41,105 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 85 selfloop transitions, 18 changer transitions 122/230 dead transitions. [2025-03-13 21:32:41,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 230 transitions, 1620 flow [2025-03-13 21:32:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-13 21:32:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-13 21:32:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2025-03-13 21:32:41,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.556 [2025-03-13 21:32:41,108 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 272 flow. Second operand 10 states and 278 transitions. [2025-03-13 21:32:41,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 230 transitions, 1620 flow [2025-03-13 21:32:41,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 230 transitions, 1524 flow, removed 48 selfloop flow, removed 2 redundant places. [2025-03-13 21:32:41,922 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 494 flow [2025-03-13 21:32:41,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2025-03-13 21:32:41,927 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2025-03-13 21:32:41,927 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 494 flow [2025-03-13 21:32:41,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:41,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:41,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:41,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:32:41,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:41,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash 847910107, now seen corresponding path program 1 times [2025-03-13 21:32:41,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:41,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747346284] [2025-03-13 21:32:41,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:41,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:41,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:32:41,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:32:41,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:41,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:42,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747346284] [2025-03-13 21:32:42,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747346284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:42,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:32:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256677935] [2025-03-13 21:32:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:42,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:32:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:42,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:32:42,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:32:42,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:42,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:42,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:42,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:42,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:48,523 INFO L124 PetriNetUnfolderBase]: 52018/69819 cut-off events. [2025-03-13 21:32:48,524 INFO L125 PetriNetUnfolderBase]: For 191024/191037 co-relation queries the response was YES. [2025-03-13 21:32:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264067 conditions, 69819 events. 52018/69819 cut-off events. For 191024/191037 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 414560 event pairs, 21219 based on Foata normal form. 1056/70869 useless extension candidates. Maximal degree in co-relation 264037. Up to 58755 conditions per place. [2025-03-13 21:32:49,484 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 106 selfloop transitions, 19 changer transitions 79/209 dead transitions. [2025-03-13 21:32:49,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 209 transitions, 1896 flow [2025-03-13 21:32:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:32:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:32:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2025-03-13 21:32:49,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5225 [2025-03-13 21:32:49,485 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 494 flow. Second operand 8 states and 209 transitions. [2025-03-13 21:32:49,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 209 transitions, 1896 flow [2025-03-13 21:32:51,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 209 transitions, 1850 flow, removed 20 selfloop flow, removed 5 redundant places. [2025-03-13 21:32:51,424 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 764 flow [2025-03-13 21:32:51,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2025-03-13 21:32:51,425 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2025-03-13 21:32:51,425 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 764 flow [2025-03-13 21:32:51,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:51,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:51,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:51,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:32:51,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:51,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1259365563, now seen corresponding path program 2 times [2025-03-13 21:32:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:51,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206135756] [2025-03-13 21:32:51,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:32:51,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:51,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:32:51,452 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:32:51,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:32:51,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206135756] [2025-03-13 21:32:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206135756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:32:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031877703] [2025-03-13 21:32:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:51,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:32:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:51,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:32:51,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:32:51,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 764 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:51,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:51,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand