./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:23:30,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:23:31,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:23:31,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:23:31,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:23:31,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:23:31,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:23:31,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:23:31,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:23:31,065 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:23:31,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:23:31,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:23:31,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:23:31,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:23:31,066 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:23:31,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:23:31,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:23:31,067 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:23:31,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:23:31,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:23:31,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:23:31,068 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:23:31,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:23:31,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:23:31,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:23:31,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:23:31,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:23:31,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:23:31,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:23:31,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:23:31,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 [2025-01-09 16:23:31,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:23:31,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:23:31,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:23:31,382 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:23:31,383 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:23:31,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-01-09 16:23:32,721 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e20d49b87/7ec8328df64a45d5b0085affd23bcbf0/FLAGb6b2e279a [2025-01-09 16:23:32,740 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null 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) [2025-01-09 16:23:33,050 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:23:33,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-01-09 16:23:33,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e20d49b87/7ec8328df64a45d5b0085affd23bcbf0/FLAGb6b2e279a [2025-01-09 16:23:33,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e20d49b87/7ec8328df64a45d5b0085affd23bcbf0 [2025-01-09 16:23:33,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:23:33,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:23:33,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:23:33,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:23:33,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:23:33,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7fc280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33, skipping insertion in model container [2025-01-09 16:23:33,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:23:33,431 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i[31294,31307] [2025-01-09 16:23:33,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:23:33,453 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:23:33,499 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i[31294,31307] [2025-01-09 16:23:33,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:23:33,536 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:23:33,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33 WrapperNode [2025-01-09 16:23:33,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:23:33,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:23:33,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:23:33,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:23:33,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,594 INFO L138 Inliner]: procedures = 179, calls = 46, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 243 [2025-01-09 16:23:33,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:23:33,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:23:33,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:23:33,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:23:33,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,638 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 6, 12, 4]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 2, 1]. The 9 writes are split as follows [0, 2, 5, 2]. [2025-01-09 16:23:33,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,651 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:23:33,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:23:33,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:23:33,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:23:33,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (1/1) ... [2025-01-09 16:23:33,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:23:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:23:33,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:23:33,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:23:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:23:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:23:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:23:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:23:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-09 16:23:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:23:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:23:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:23:33,752 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:23:33,884 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:23:33,886 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:23:34,278 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:23:34,279 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:23:34,708 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:23:34,711 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-09 16:23:34,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:23:34 BoogieIcfgContainer [2025-01-09 16:23:34,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:23:34,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:23:34,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:23:34,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:23:34,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:23:33" (1/3) ... [2025-01-09 16:23:34,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462d582c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:23:34, skipping insertion in model container [2025-01-09 16:23:34,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:23:33" (2/3) ... [2025-01-09 16:23:34,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462d582c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:23:34, skipping insertion in model container [2025-01-09 16:23:34,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:23:34" (3/3) ... [2025-01-09 16:23:34,723 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2025-01-09 16:23:34,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:23:34,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas.i that has 2 procedures, 29 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 16:23:34,741 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:23:34,808 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:23:34,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 35 transitions, 74 flow [2025-01-09 16:23:34,877 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2025-01-09 16:23:34,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:23:34,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 6/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2025-01-09 16:23:34,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 35 transitions, 74 flow [2025-01-09 16:23:34,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 35 transitions, 74 flow [2025-01-09 16:23:34,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:23:34,911 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;@9eedf13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:23:34,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:23:34,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:23:34,924 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-01-09 16:23:34,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:23:34,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:34,925 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-09 16:23:34,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:23:34,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1160068586, now seen corresponding path program 1 times [2025-01-09 16:23:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387224056] [2025-01-09 16:23:34,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:23:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:35,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 16:23:35,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 16:23:35,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:35,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:35,686 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 16:23:35,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 16:23:35,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 16:23:35,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:35,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:35,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 16:23:35,769 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 16:23:35,770 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-01-09 16:23:35,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-01-09 16:23:35,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-01-09 16:23:35,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:23:35,774 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 16:23:35,777 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 16:23:35,780 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-09 16:23:35,844 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:23:35,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 65 transitions, 140 flow [2025-01-09 16:23:35,874 INFO L124 PetriNetUnfolderBase]: 12/70 cut-off events. [2025-01-09 16:23:35,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:23:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 12/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2025-01-09 16:23:35,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 65 transitions, 140 flow [2025-01-09 16:23:35,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 65 transitions, 140 flow [2025-01-09 16:23:35,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:23:35,882 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;@9eedf13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:23:35,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:23:35,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:23:35,892 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2025-01-09 16:23:35,892 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:23:35,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:35,893 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-09 16:23:35,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-01-09 16:23:35,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1542175132, now seen corresponding path program 1 times [2025-01-09 16:23:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649151527] [2025-01-09 16:23:35,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:23:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:36,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:23:36,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:23:36,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:36,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:36,298 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 16:23:36,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:23:36,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:23:36,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:36,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:36,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 16:23:36,341 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 16:23:36,341 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-01-09 16:23:36,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-01-09 16:23:36,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-01-09 16:23:36,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-01-09 16:23:36,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:23:36,342 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 16:23:36,346 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 16:23:36,346 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-09 16:23:36,410 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:23:36,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 95 transitions, 208 flow [2025-01-09 16:23:36,439 INFO L124 PetriNetUnfolderBase]: 18/103 cut-off events. [2025-01-09 16:23:36,440 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 16:23:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 18/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2025-01-09 16:23:36,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 95 transitions, 208 flow [2025-01-09 16:23:36,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 95 transitions, 208 flow [2025-01-09 16:23:36,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:23:36,445 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;@9eedf13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:23:36,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-09 16:23:36,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:23:36,463 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-01-09 16:23:36,463 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 16:23:36,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:36,463 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-01-09 16:23:36,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-01-09 16:23:36,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash 889761013, now seen corresponding path program 1 times [2025-01-09 16:23:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942576277] [2025-01-09 16:23:36,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:23:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:36,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:23:36,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:23:36,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:36,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:36,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 16:23:36,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:23:36,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:23:36,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:36,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:36,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 16:23:36,777 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 16:23:36,777 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-01-09 16:23:36,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-01-09 16:23:36,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-01-09 16:23:36,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-01-09 16:23:36,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-01-09 16:23:36,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:23:36,778 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 16:23:36,779 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 16:23:36,780 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-01-09 16:23:36,864 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:23:36,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 125 transitions, 278 flow [2025-01-09 16:23:36,910 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2025-01-09 16:23:36,910 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 16:23:36,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 24/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 406 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2025-01-09 16:23:36,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 125 transitions, 278 flow [2025-01-09 16:23:36,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 125 transitions, 278 flow [2025-01-09 16:23:36,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:23:36,918 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;@9eedf13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:23:36,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-09 16:23:36,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:23:36,934 INFO L124 PetriNetUnfolderBase]: 3/58 cut-off events. [2025-01-09 16:23:36,934 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 16:23:36,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:36,934 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2025-01-09 16:23:36,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-01-09 16:23:36,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2010151025, now seen corresponding path program 1 times [2025-01-09 16:23:36,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:36,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039023798] [2025-01-09 16:23:36,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:23:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:37,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:23:37,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:23:37,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:37,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:37,287 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 16:23:37,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:23:37,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:23:37,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:37,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 16:23:37,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 16:23:37,339 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-01-09 16:23:37,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-01-09 16:23:37,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:23:37,340 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 16:23:37,341 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 16:23:37,341 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-01-09 16:23:37,442 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:23:37,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 155 transitions, 350 flow [2025-01-09 16:23:37,493 INFO L124 PetriNetUnfolderBase]: 30/169 cut-off events. [2025-01-09 16:23:37,494 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-01-09 16:23:37,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 169 events. 30/169 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 556 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2025-01-09 16:23:37,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 155 transitions, 350 flow [2025-01-09 16:23:37,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 155 transitions, 350 flow [2025-01-09 16:23:37,500 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:23:37,500 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;@9eedf13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:23:37,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-09 16:23:37,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:23:37,518 INFO L124 PetriNetUnfolderBase]: 7/77 cut-off events. [2025-01-09 16:23:37,518 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-01-09 16:23:37,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:37,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:23:37,518 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-01-09 16:23:37,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1109942697, now seen corresponding path program 1 times [2025-01-09 16:23:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242293481] [2025-01-09 16:23:37,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:23:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:37,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 16:23:37,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:23:37,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:23:37,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:23:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:38,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:23:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242293481] [2025-01-09 16:23:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242293481] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:23:38,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:23:38,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:23:38,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606343648] [2025-01-09 16:23:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:23:38,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:23:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:23:38,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:23:38,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:23:38,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 155 [2025-01-09 16:23:38,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 155 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 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) [2025-01-09 16:23:38,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:23:38,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 155 [2025-01-09 16:23:38,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand