./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:32:20,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:32:20,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:32:20,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:32:20,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:32:20,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:32:20,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:32:20,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:32:20,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:32:20,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:32:20,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:32:20,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:32:20,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:32:20,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:32:20,598 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:32:20,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:32:20,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:32:20,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:32:20,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:32:20,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:32:20,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:32:20,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:32:20,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:32:20,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:32:20,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:32:20,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:32:20,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:32:20,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:32:20,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:32:20,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:32:20,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:32:20,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:32:20,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:32:20,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:32:20,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:32:20,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:32:20,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:32:20,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:32:20,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:32:20,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:32:20,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:32:20,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:32:20,605 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2024-11-20 09:32:20,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:32:20,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:32:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:32:20,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:32:20,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:32:20,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-20 09:32:22,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:32:22,788 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:32:22,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-20 09:32:22,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fe1d68/960e012e3ad44b52a2b083c7f8e41464/FLAG437fd31d1 [2024-11-20 09:32:22,819 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fe1d68/960e012e3ad44b52a2b083c7f8e41464 [2024-11-20 09:32:22,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:32:22,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:32:22,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:32:22,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:32:22,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:32:22,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:22" (1/1) ... [2024-11-20 09:32:22,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcea428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:22, skipping insertion in model container [2024-11-20 09:32:22,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:22" (1/1) ... [2024-11-20 09:32:22,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:32:23,228 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/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2024-11-20 09:32:23,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:32:23,294 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:32:23,335 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/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2024-11-20 09:32:23,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:32:23,411 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:32:23,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23 WrapperNode [2024-11-20 09:32:23,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:32:23,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:32:23,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:32:23,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:32:23,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,482 INFO L138 Inliner]: procedures = 272, calls = 109, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 344 [2024-11-20 09:32:23,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:32:23,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:32:23,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:32:23,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:32:23,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,536 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-20 09:32:23,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:32:23,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:32:23,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:32:23,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:32:23,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (1/1) ... [2024-11-20 09:32:23,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:32:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:32:23,591 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) [2024-11-20 09:32:23,596 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 [2024-11-20 09:32:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:32:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:32:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 09:32:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 09:32:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 09:32:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:32:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 09:32:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 09:32:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:32:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:32:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 09:32:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 09:32:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:32:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:32:23,636 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:32:23,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:32:23,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:32:24,199 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:32:24,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:32:24,689 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:32:24,690 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-20 09:32:24,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:24 BoogieIcfgContainer [2024-11-20 09:32:24,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:32:24,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:32:24,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:32:24,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:32:24,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:22" (1/3) ... [2024-11-20 09:32:24,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c79b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:24, skipping insertion in model container [2024-11-20 09:32:24,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:23" (2/3) ... [2024-11-20 09:32:24,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c79b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:24, skipping insertion in model container [2024-11-20 09:32:24,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:24" (3/3) ... [2024-11-20 09:32:24,699 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-11-20 09:32:24,713 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:32:24,713 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-20 09:32:24,713 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:32:24,758 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 09:32:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 137 transitions, 281 flow [2024-11-20 09:32:24,866 INFO L124 PetriNetUnfolderBase]: 65/223 cut-off events. [2024-11-20 09:32:24,866 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:32:24,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 223 events. 65/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1052 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2024-11-20 09:32:24,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 137 transitions, 281 flow [2024-11-20 09:32:24,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 135 transitions, 274 flow [2024-11-20 09:32:24,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:32:24,896 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;@279c185d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:32:24,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 09:32:24,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:32:24,905 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-20 09:32:24,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:32:24,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:24,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-20 09:32:24,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:32:24,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash -646762366, now seen corresponding path program 1 times [2024-11-20 09:32:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234566305] [2024-11-20 09:32:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:25,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234566305] [2024-11-20 09:32:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234566305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:32:25,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:32:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:32:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848089199] [2024-11-20 09:32:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:32:25,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:32:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:32:25,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:32:25,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-20 09:32:25,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 135 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-20 09:32:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:25,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-20 09:32:25,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:25,663 INFO L124 PetriNetUnfolderBase]: 823/2254 cut-off events. [2024-11-20 09:32:25,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:32:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 2254 events. 823/2254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16735 event pairs, 684 based on Foata normal form. 541/2536 useless extension candidates. Maximal degree in co-relation 3684. Up to 1544 conditions per place. [2024-11-20 09:32:25,679 INFO L140 encePairwiseOnDemand]: 101/137 looper letters, 61 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-11-20 09:32:25,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 336 flow [2024-11-20 09:32:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:32:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:32:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-20 09:32:25,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5279805352798054 [2024-11-20 09:32:25,692 INFO L175 Difference]: Start difference. First operand has 99 places, 135 transitions, 274 flow. Second operand 3 states and 217 transitions. [2024-11-20 09:32:25,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 336 flow [2024-11-20 09:32:25,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:32:25,698 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 220 flow [2024-11-20 09:32:25,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-20 09:32:25,703 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-11-20 09:32:25,704 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 220 flow [2024-11-20 09:32:25,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-20 09:32:25,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:25,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 09:32:25,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:32:25,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:32:25,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1067654764, now seen corresponding path program 1 times [2024-11-20 09:32:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:25,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571769038] [2024-11-20 09:32:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:25,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571769038] [2024-11-20 09:32:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571769038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:32:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050549355] [2024-11-20 09:32:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:25,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:25,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:32:25,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:32:25,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:32:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:25,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:32:25,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:32:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:25,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:32:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050549355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:32:25,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:32:25,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 09:32:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183471676] [2024-11-20 09:32:25,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:32:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:32:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:32:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:32:25,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-20 09:32:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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) [2024-11-20 09:32:25,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:25,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-20 09:32:25,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:26,255 INFO L124 PetriNetUnfolderBase]: 823/2257 cut-off events. [2024-11-20 09:32:26,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:32:26,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 2257 events. 823/2257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16738 event pairs, 684 based on Foata normal form. 0/1998 useless extension candidates. Maximal degree in co-relation 3807. Up to 1544 conditions per place. [2024-11-20 09:32:26,265 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-20 09:32:26,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 364 flow [2024-11-20 09:32:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:32:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:32:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 309 transitions. [2024-11-20 09:32:26,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3759124087591241 [2024-11-20 09:32:26,269 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 220 flow. Second operand 6 states and 309 transitions. [2024-11-20 09:32:26,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 364 flow [2024-11-20 09:32:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:32:26,273 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 252 flow [2024-11-20 09:32:26,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-11-20 09:32:26,274 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2024-11-20 09:32:26,274 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 252 flow [2024-11-20 09:32:26,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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) [2024-11-20 09:32:26,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:26,276 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-20 09:32:26,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:32:26,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:26,484 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:32:26,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 517989634, now seen corresponding path program 2 times [2024-11-20 09:32:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530920109] [2024-11-20 09:32:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530920109] [2024-11-20 09:32:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530920109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:32:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270497362] [2024-11-20 09:32:26,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:32:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:32:26,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:32:26,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:32:26,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:32:26,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:32:26,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:32:26,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:32:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:26,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:32:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:32:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270497362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:32:26,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:32:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-20 09:32:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113520204] [2024-11-20 09:32:26,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:32:26,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:32:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:32:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:32:26,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-20 09:32:26,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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) [2024-11-20 09:32:26,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:26,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-20 09:32:26,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:27,045 INFO L124 PetriNetUnfolderBase]: 823/2263 cut-off events. [2024-11-20 09:32:27,045 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-20 09:32:27,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 2263 events. 823/2263 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16730 event pairs, 684 based on Foata normal form. 6/2011 useless extension candidates. Maximal degree in co-relation 3798. Up to 1544 conditions per place. [2024-11-20 09:32:27,058 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-11-20 09:32:27,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 432 flow [2024-11-20 09:32:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 09:32:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 09:32:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 558 transitions. [2024-11-20 09:32:27,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33941605839416056 [2024-11-20 09:32:27,061 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 252 flow. Second operand 12 states and 558 transitions. [2024-11-20 09:32:27,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 432 flow [2024-11-20 09:32:27,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 112 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-20 09:32:27,065 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 322 flow [2024-11-20 09:32:27,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2024-11-20 09:32:27,066 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 26 predicate places. [2024-11-20 09:32:27,066 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 322 flow [2024-11-20 09:32:27,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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) [2024-11-20 09:32:27,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:27,067 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-20 09:32:27,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:32:27,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-20 09:32:27,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:32:27,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 753810370, now seen corresponding path program 3 times [2024-11-20 09:32:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588367164] [2024-11-20 09:32:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:32:27,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 09:32:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:32:27,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 09:32:27,355 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 09:32:27,356 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-20 09:32:27,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-20 09:32:27,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-20 09:32:27,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-20 09:32:27,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-20 09:32:27,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:32:27,359 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-20 09:32:27,361 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 09:32:27,361 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 09:32:27,386 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 09:32:27,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 182 transitions, 380 flow [2024-11-20 09:32:27,409 INFO L124 PetriNetUnfolderBase]: 105/361 cut-off events. [2024-11-20 09:32:27,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 09:32:27,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 361 events. 105/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1960 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 225. Up to 12 conditions per place. [2024-11-20 09:32:27,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 182 transitions, 380 flow [2024-11-20 09:32:27,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 182 transitions, 380 flow [2024-11-20 09:32:27,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:32:27,417 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;@279c185d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:32:27,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-20 09:32:27,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:32:27,423 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-11-20 09:32:27,423 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 09:32:27,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:27,423 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-20 09:32:27,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 09:32:27,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1844086936, now seen corresponding path program 1 times [2024-11-20 09:32:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:27,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273203974] [2024-11-20 09:32:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:27,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:27,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273203974] [2024-11-20 09:32:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273203974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:32:27,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:32:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:32:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067692392] [2024-11-20 09:32:27,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:32:27,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:32:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:32:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:32:27,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-20 09:32:27,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 182 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-11-20 09:32:27,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:27,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-20 09:32:27,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:32,145 INFO L124 PetriNetUnfolderBase]: 31325/60557 cut-off events. [2024-11-20 09:32:32,145 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-20 09:32:32,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105651 conditions, 60557 events. 31325/60557 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609057 event pairs, 27108 based on Foata normal form. 15651/69105 useless extension candidates. Maximal degree in co-relation 85934. Up to 44991 conditions per place. [2024-11-20 09:32:32,620 INFO L140 encePairwiseOnDemand]: 135/182 looper letters, 84 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-11-20 09:32:32,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 466 flow [2024-11-20 09:32:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:32:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:32:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-20 09:32:32,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5311355311355311 [2024-11-20 09:32:32,623 INFO L175 Difference]: Start difference. First operand has 133 places, 182 transitions, 380 flow. Second operand 3 states and 290 transitions. [2024-11-20 09:32:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 466 flow [2024-11-20 09:32:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 139 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:32:32,631 INFO L231 Difference]: Finished difference. Result has 136 places, 139 transitions, 304 flow [2024-11-20 09:32:32,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=136, PETRI_TRANSITIONS=139} [2024-11-20 09:32:32,633 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2024-11-20 09:32:32,634 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 139 transitions, 304 flow [2024-11-20 09:32:32,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-11-20 09:32:32,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:32,634 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 09:32:32,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:32:32,635 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 09:32:32,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash 27355724, now seen corresponding path program 1 times [2024-11-20 09:32:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609744687] [2024-11-20 09:32:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609744687] [2024-11-20 09:32:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609744687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:32:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796855598] [2024-11-20 09:32:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:32,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:32:32,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:32:32,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:32:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:32,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:32:32,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:32:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:32,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:32:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796855598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:32:32,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:32:32,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 09:32:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482158753] [2024-11-20 09:32:32,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:32:32,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:32:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:32:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:32:32,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-20 09:32:32,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2024-11-20 09:32:32,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:32,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-20 09:32:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:37,583 INFO L124 PetriNetUnfolderBase]: 31325/60560 cut-off events. [2024-11-20 09:32:37,584 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-20 09:32:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105667 conditions, 60560 events. 31325/60560 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609001 event pairs, 27108 based on Foata normal form. 0/53457 useless extension candidates. Maximal degree in co-relation 105654. Up to 44991 conditions per place. [2024-11-20 09:32:37,919 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-11-20 09:32:37,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 494 flow [2024-11-20 09:32:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:32:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:32:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2024-11-20 09:32:37,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37545787545787546 [2024-11-20 09:32:37,922 INFO L175 Difference]: Start difference. First operand has 136 places, 139 transitions, 304 flow. Second operand 6 states and 410 transitions. [2024-11-20 09:32:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 494 flow [2024-11-20 09:32:37,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:32:37,926 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 336 flow [2024-11-20 09:32:37,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2024-11-20 09:32:37,927 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 10 predicate places. [2024-11-20 09:32:37,927 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 336 flow [2024-11-20 09:32:37,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2024-11-20 09:32:37,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:37,928 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-20 09:32:37,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:32:38,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:38,130 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 09:32:38,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash 250417256, now seen corresponding path program 2 times [2024-11-20 09:32:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434156853] [2024-11-20 09:32:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:38,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434156853] [2024-11-20 09:32:38,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434156853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:32:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115844325] [2024-11-20 09:32:38,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:32:38,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:38,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:32:38,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:32:38,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:32:38,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:32:38,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:32:38,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:32:38,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:32:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:38,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:32:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 09:32:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115844325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:32:38,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:32:38,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-20 09:32:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838029963] [2024-11-20 09:32:38,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:32:38,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:32:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:32:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:32:38,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-20 09:32:38,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-11-20 09:32:38,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-20 09:32:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:32:42,977 INFO L124 PetriNetUnfolderBase]: 31325/60566 cut-off events. [2024-11-20 09:32:42,977 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-20 09:32:43,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105704 conditions, 60566 events. 31325/60566 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609178 event pairs, 27108 based on Foata normal form. 6/53470 useless extension candidates. Maximal degree in co-relation 105645. Up to 44991 conditions per place. [2024-11-20 09:32:43,365 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2024-11-20 09:32:43,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 148 transitions, 562 flow [2024-11-20 09:32:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 09:32:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 09:32:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2024-11-20 09:32:43,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3374542124542125 [2024-11-20 09:32:43,371 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 336 flow. Second operand 12 states and 737 transitions. [2024-11-20 09:32:43,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 148 transitions, 562 flow [2024-11-20 09:32:43,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 548 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-20 09:32:43,375 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 406 flow [2024-11-20 09:32:43,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2024-11-20 09:32:43,377 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 26 predicate places. [2024-11-20 09:32:43,377 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 406 flow [2024-11-20 09:32:43,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-11-20 09:32:43,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:43,378 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-20 09:32:43,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 09:32:43,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:32:43,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 09:32:43,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash 32114152, now seen corresponding path program 3 times [2024-11-20 09:32:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:43,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724829832] [2024-11-20 09:32:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:32:43,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 09:32:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:32:43,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 09:32:43,642 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 09:32:43,642 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-20 09:32:43,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-20 09:32:43,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-20 09:32:43,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-20 09:32:43,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-20 09:32:43,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-20 09:32:43,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:32:43,644 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-20 09:32:43,645 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 09:32:43,645 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 09:32:43,681 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:32:43,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 227 transitions, 481 flow [2024-11-20 09:32:43,713 INFO L124 PetriNetUnfolderBase]: 148/510 cut-off events. [2024-11-20 09:32:43,714 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 09:32:43,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 510 events. 148/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2942 event pairs, 1 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2024-11-20 09:32:43,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 227 transitions, 481 flow [2024-11-20 09:32:43,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 227 transitions, 481 flow [2024-11-20 09:32:43,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:32:43,724 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;@279c185d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:32:43,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-20 09:32:43,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:32:43,735 INFO L124 PetriNetUnfolderBase]: 25/139 cut-off events. [2024-11-20 09:32:43,736 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 09:32:43,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:32:43,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:32:43,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 09:32:43,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:32:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash 186627446, now seen corresponding path program 1 times [2024-11-20 09:32:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:32:43,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998702062] [2024-11-20 09:32:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:32:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:32:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:32:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:32:43,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:32:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998702062] [2024-11-20 09:32:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998702062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:32:43,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:32:43,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:32:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378589291] [2024-11-20 09:32:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:32:43,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:32:43,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:32:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:32:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:32:43,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 227 [2024-11-20 09:32:43,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-11-20 09:32:43,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:32:43,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 227 [2024-11-20 09:32:43,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand