./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:38:30,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:38:30,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:38:30,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:38:30,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:38:31,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:38:31,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:38:31,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:38:31,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:38:31,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:38:31,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:38:31,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:38:31,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:38:31,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:38:31,013 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:38:31,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:38:31,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:38:31,015 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:38:31,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:38:31,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:38:31,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:38:31,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:38:31,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:38:31,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:38:31,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:38:31,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:38:31,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:38:31,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:38:31,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:38:31,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:38:31,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:38:31,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:38:31,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:38:31,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:38:31,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:38:31,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:38:31,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:38:31,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:38:31,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:38:31,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:38:31,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:38:31,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:38:31,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2024-11-09 02:38:31,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:38:31,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:38:31,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:38:31,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:38:31,333 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:38:31,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-11-09 02:38:32,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:38:32,823 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 02:38:33,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:38:33,052 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-11-09 02:38:33,079 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca8ca12c/50c0e77953814fbaa5c309ed0aa817b4/FLAG340d6e5fb [2024-11-09 02:38:33,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca8ca12c/50c0e77953814fbaa5c309ed0aa817b4 [2024-11-09 02:38:33,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:38:33,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:38:33,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:38:33,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:38:33,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:38:33,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eac482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33, skipping insertion in model container [2024-11-09 02:38:33,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,158 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:38:33,666 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_92-evilcollapse_racing.i[47038,47051] [2024-11-09 02:38:33,683 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,684 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,685 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,686 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:38:33,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:38:33,802 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_92-evilcollapse_racing.i[47038,47051] [2024-11-09 02:38:33,807 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,808 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,808 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,809 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 02:38:33,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:38:33,883 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:38:33,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33 WrapperNode [2024-11-09 02:38:33,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:38:33,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:38:33,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:38:33,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:38:33,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,956 INFO L138 Inliner]: procedures = 280, calls = 135, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 314 [2024-11-09 02:38:33,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:38:33,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:38:33,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:38:33,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:38:33,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:33,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,002 INFO L175 MemorySlicer]: Split 110 memory accesses to 4 slices as follows [2, 5, 2, 101]. 92 percent of accesses are in the largest equivalence class. The 87 initializations are split as follows [2, 5, 0, 80]. The 13 writes are split as follows [0, 0, 1, 12]. [2024-11-09 02:38:34,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:38:34,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:38:34,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:38:34,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:38:34,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (1/1) ... [2024-11-09 02:38:34,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:38:34,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:38:34,077 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) [2024-11-09 02:38:34,079 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 [2024-11-09 02:38:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:38:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 02:38:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 02:38:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 02:38:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 02:38:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:38:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 02:38:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 02:38:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-09 02:38:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-09 02:38:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:38:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:38:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:38:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:38:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:38:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:38:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 02:38:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 02:38:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:38:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:38:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:38:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:38:34,139 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:38:34,418 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:38:34,420 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:38:34,915 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:38:34,915 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:38:35,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:38:35,639 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-09 02:38:35,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:38:35 BoogieIcfgContainer [2024-11-09 02:38:35,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:38:35,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:38:35,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:38:35,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:38:35,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:38:33" (1/3) ... [2024-11-09 02:38:35,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d98fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:38:35, skipping insertion in model container [2024-11-09 02:38:35,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:38:33" (2/3) ... [2024-11-09 02:38:35,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d98fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:38:35, skipping insertion in model container [2024-11-09 02:38:35,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:38:35" (3/3) ... [2024-11-09 02:38:35,650 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2024-11-09 02:38:35,668 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:38:35,668 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:38:35,668 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:38:35,719 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 02:38:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-11-09 02:38:35,795 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-11-09 02:38:35,795 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:38:35,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-11-09 02:38:35,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-11-09 02:38:35,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-11-09 02:38:35,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:38:35,823 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;@75015b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:38:35,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:38:35,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:38:35,833 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-09 02:38:35,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:38:35,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:35,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 02:38:35,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:38:35,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -807633862, now seen corresponding path program 1 times [2024-11-09 02:38:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:35,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317958852] [2024-11-09 02:38:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:35,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317958852] [2024-11-09 02:38:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317958852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:38:36,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:38:36,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:38:36,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684135196] [2024-11-09 02:38:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:38:36,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:38:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:36,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:38:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:38:36,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-09 02:38:36,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-09 02:38:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-09 02:38:36,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:36,686 INFO L124 PetriNetUnfolderBase]: 116/324 cut-off events. [2024-11-09 02:38:36,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:38:36,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 324 events. 116/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1291 event pairs, 95 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 536. Up to 237 conditions per place. [2024-11-09 02:38:36,693 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-09 02:38:36,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-11-09 02:38:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:38:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:38:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-09 02:38:36,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-09 02:38:36,709 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-11-09 02:38:36,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-11-09 02:38:36,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:38:36,717 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-11-09 02:38:36,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-09 02:38:36,725 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-11-09 02:38:36,726 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-11-09 02:38:36,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-09 02:38:36,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:36,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:38:36,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:38:36,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:38:36,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1071448935, now seen corresponding path program 1 times [2024-11-09 02:38:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980458157] [2024-11-09 02:38:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:36,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980458157] [2024-11-09 02:38:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980458157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:38:36,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:38:36,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:38:36,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651357944] [2024-11-09 02:38:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:38:36,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:38:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:38:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:38:36,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-09 02:38:36,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 02:38:36,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:36,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-09 02:38:36,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:37,132 INFO L124 PetriNetUnfolderBase]: 116/326 cut-off events. [2024-11-09 02:38:37,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:38:37,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 326 events. 116/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1294 event pairs, 95 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 561. Up to 240 conditions per place. [2024-11-09 02:38:37,136 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-09 02:38:37,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-11-09 02:38:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:38:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:38:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-09 02:38:37,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-11-09 02:38:37,141 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-11-09 02:38:37,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-11-09 02:38:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:38:37,143 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-11-09 02:38:37,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-09 02:38:37,147 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-11-09 02:38:37,147 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-11-09 02:38:37,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 02:38:37,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:37,147 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:38:37,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:38:37,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:38:37,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1574829923, now seen corresponding path program 1 times [2024-11-09 02:38:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:37,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594344185] [2024-11-09 02:38:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594344185] [2024-11-09 02:38:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594344185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:38:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542468669] [2024-11-09 02:38:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:37,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:37,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:38:37,312 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) [2024-11-09 02:38:37,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:38:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:37,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:38:37,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:38:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:37,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:38:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542468669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:38:37,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:38:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 02:38:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702799884] [2024-11-09 02:38:37,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:38:37,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:38:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:38:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:38:37,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-09 02:38:37,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-11-09 02:38:37,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:37,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-09 02:38:37,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:38,077 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-11-09 02:38:38,078 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:38:38,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 332 events. 116/332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1309 event pairs, 95 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 568. Up to 240 conditions per place. [2024-11-09 02:38:38,080 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-11-09 02:38:38,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-11-09 02:38:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:38:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:38:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-11-09 02:38:38,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-11-09 02:38:38,083 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-11-09 02:38:38,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-11-09 02:38:38,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:38:38,085 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-11-09 02:38:38,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-09 02:38:38,086 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-11-09 02:38:38,087 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-11-09 02:38:38,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-11-09 02:38:38,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:38,087 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:38:38,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:38:38,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:38,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:38:38,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash 909779559, now seen corresponding path program 2 times [2024-11-09 02:38:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:38,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287246532] [2024-11-09 02:38:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 02:38:38,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:38,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287246532] [2024-11-09 02:38:38,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287246532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:38:38,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552338170] [2024-11-09 02:38:38,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:38:38,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:38:38,590 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) [2024-11-09 02:38:38,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:38:38,929 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:38:38,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:38:38,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:38:38,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:38:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:38,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:38:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:38:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552338170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:38:39,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:38:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2024-11-09 02:38:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393655474] [2024-11-09 02:38:39,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:38:39,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:38:39,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:38:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:38:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:38:39,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-09 02:38:39,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-11-09 02:38:39,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:38:39,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-09 02:38:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:38:40,026 INFO L124 PetriNetUnfolderBase]: 117/357 cut-off events. [2024-11-09 02:38:40,026 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-09 02:38:40,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 357 events. 117/357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1362 event pairs, 95 based on Foata normal form. 19/322 useless extension candidates. Maximal degree in co-relation 564. Up to 237 conditions per place. [2024-11-09 02:38:40,030 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 32 selfloop transitions, 36 changer transitions 0/83 dead transitions. [2024-11-09 02:38:40,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 496 flow [2024-11-09 02:38:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:38:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:38:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 597 transitions. [2024-11-09 02:38:40,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2926470588235294 [2024-11-09 02:38:40,035 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 34 states and 597 transitions. [2024-11-09 02:38:40,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 496 flow [2024-11-09 02:38:40,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 454 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-09 02:38:40,040 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 452 flow [2024-11-09 02:38:40,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=452, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-11-09 02:38:40,041 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-11-09 02:38:40,041 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 452 flow [2024-11-09 02:38:40,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-11-09 02:38:40,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:38:40,042 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 02:38:40,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:38:40,245 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,SelfDestructingSolverStorable3 [2024-11-09 02:38:40,246 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:38:40,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:38:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 781740564, now seen corresponding path program 3 times [2024-11-09 02:38:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:38:40,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243135936] [2024-11-09 02:38:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:38:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:38:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:38:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 02:38:41,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:38:41,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243135936] [2024-11-09 02:38:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243135936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:38:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631801734] [2024-11-09 02:38:41,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:38:41,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:38:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:38:41,648 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) [2024-11-09 02:38:41,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process