./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.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/pthread-ext/26_stack_cas_longer-2.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 f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:25:25,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:25:25,383 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:25:25,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:25:25,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:25:25,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:25:25,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:25:25,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:25:25,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:25:25,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:25:25,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:25:25,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:25:25,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:25:25,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:25:25,423 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:25:25,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:25:25,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:25:25,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:25:25,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:25:25,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:25:25,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:25:25,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:25:25,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:25:25,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:25:25,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:25:25,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:25:25,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:25:25,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:25:25,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:25:25,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:25:25,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:25:25,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:25:25,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:25:25,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:25:25,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:25:25,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:25:25,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:25:25,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:25:25,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:25:25,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:25:25,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:25:25,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:25:25,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e [2024-11-09 02:25:25,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:25:25,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:25:25,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:25:25,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:25:25,728 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:25:25,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-09 02:25:27,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:25:27,452 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:25:27,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-09 02:25:27,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e14b4da4/fdf6dfa01c1a45ce918fafe8b567953b/FLAGac6314008 [2024-11-09 02:25:27,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e14b4da4/fdf6dfa01c1a45ce918fafe8b567953b [2024-11-09 02:25:27,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:25:27,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:25:27,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:25:27,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:25:27,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:25:27,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:25:27" (1/1) ... [2024-11-09 02:25:27,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fd4ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:27, skipping insertion in model container [2024-11-09 02:25:27,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:25:27" (1/1) ... [2024-11-09 02:25:27,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:25:28,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31305,31318] [2024-11-09 02:25:28,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:25:28,077 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:25:28,132 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31305,31318] [2024-11-09 02:25:28,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:25:28,185 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:25:28,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28 WrapperNode [2024-11-09 02:25:28,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:25:28,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:25:28,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:25:28,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:25:28,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,292 INFO L138 Inliner]: procedures = 179, calls = 46, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 828 [2024-11-09 02:25:28,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:25:28,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:25:28,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:25:28,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:25:28,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,345 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]. [2024-11-09 02:25:28,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:25:28,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:25:28,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:25:28,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:25:28,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (1/1) ... [2024-11-09 02:25:28,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:25:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:25:28,470 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 02:25:28,478 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 02:25:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:25:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:25:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 02:25:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:25:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:25:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:25:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:25:28,535 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 02:25:28,681 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:25:28,683 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:25:29,581 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:25:29,581 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:25:42,176 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:25:42,177 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:25:42,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:25:42 BoogieIcfgContainer [2024-11-09 02:25:42,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:25:42,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:25:42,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:25:42,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:25:42,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:25:27" (1/3) ... [2024-11-09 02:25:42,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538b56f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:25:42, skipping insertion in model container [2024-11-09 02:25:42,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:28" (2/3) ... [2024-11-09 02:25:42,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538b56f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:25:42, skipping insertion in model container [2024-11-09 02:25:42,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:25:42" (3/3) ... [2024-11-09 02:25:42,189 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2024-11-09 02:25:42,207 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:25:42,207 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:25:42,208 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:25:42,396 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:42,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 36 transitions, 76 flow [2024-11-09 02:25:42,667 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-09 02:25:42,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:25:42,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 6/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-09 02:25:42,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 36 transitions, 76 flow [2024-11-09 02:25:42,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 76 flow [2024-11-09 02:25:42,687 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:42,695 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;@9c54c82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:42,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:25:42,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:42,754 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-09 02:25:42,755 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:25:42,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:42,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 02:25:42,757 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:25:42,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash -699126859, now seen corresponding path program 1 times [2024-11-09 02:25:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322449489] [2024-11-09 02:25:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms