./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -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 e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:31:25,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:31:25,380 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:31:25,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:31:25,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:31:25,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:31:25,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:31:25,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:31:25,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:31:25,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:31:25,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:31:25,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:31:25,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:31:25,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:31:25,409 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:31:25,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:31:25,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:31:25,410 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:31:25,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:31:25,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:31:25,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:31:25,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:31:25,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:31:25,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:31:25,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:31:25,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:31:25,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:31:25,414 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:31:25,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:31:25,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:31:25,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:31:25,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:31:25,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:31:25,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:31:25,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:31:25,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:31:25,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:31:25,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:31:25,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:31:25,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:31:25,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:31:25,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:31:25,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 [2024-10-24 12:31:25,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:31:25,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:31:25,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:31:25,731 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:31:25,733 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:31:25,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2024-10-24 12:31:27,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:31:27,508 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:31:27,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2024-10-24 12:31:27,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87971d327/90d35cf0ae93448dae1bd1d1c6aa455f/FLAG7225a0141 [2024-10-24 12:31:27,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87971d327/90d35cf0ae93448dae1bd1d1c6aa455f [2024-10-24 12:31:27,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:31:27,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:31:27,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:31:27,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:31:27,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:31:27,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:31:27" (1/1) ... [2024-10-24 12:31:27,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527d4d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:27, skipping insertion in model container [2024-10-24 12:31:27,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:31:27" (1/1) ... [2024-10-24 12:31:27,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:31:27,843 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2024-10-24 12:31:27,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:31:27,874 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:31:27,958 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5378,5391] [2024-10-24 12:31:27,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:31:28,033 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:31:28,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28 WrapperNode [2024-10-24 12:31:28,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:31:28,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:31:28,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:31:28,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:31:28,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,097 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 330 [2024-10-24 12:31:28,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:31:28,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:31:28,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:31:28,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:31:28,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,116 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,144 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 12:31:28,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:31:28,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:31:28,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:31:28,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:31:28,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (1/1) ... [2024-10-24 12:31:28,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:31:28,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:31:28,216 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) [2024-10-24 12:31:28,220 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 [2024-10-24 12:31:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:31:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:31:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:31:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:31:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:31:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:31:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:31:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 12:31:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-24 12:31:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-24 12:31:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2024-10-24 12:31:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2024-10-24 12:31:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:31:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:31:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:31:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:31:28,286 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:31:28,446 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:31:28,450 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:31:28,879 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:31:28,880 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:31:29,172 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:31:29,173 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:31:29,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:31:29 BoogieIcfgContainer [2024-10-24 12:31:29,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:31:29,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:31:29,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:31:29,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:31:29,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:31:27" (1/3) ... [2024-10-24 12:31:29,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8b7487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:31:29, skipping insertion in model container [2024-10-24 12:31:29,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:28" (2/3) ... [2024-10-24 12:31:29,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8b7487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:31:29, skipping insertion in model container [2024-10-24 12:31:29,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:31:29" (3/3) ... [2024-10-24 12:31:29,208 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2024-10-24 12:31:29,223 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:31:29,223 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:31:29,223 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:31:29,310 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-10-24 12:31:29,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 85 transitions, 226 flow [2024-10-24 12:31:29,423 INFO L124 PetriNetUnfolderBase]: 0/77 cut-off events. [2024-10-24 12:31:29,423 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-24 12:31:29,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 77 events. 0/77 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-24 12:31:29,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 85 transitions, 226 flow [2024-10-24 12:31:29,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 76 transitions, 200 flow [2024-10-24 12:31:29,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:31:29,449 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;@19421171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:31:29,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-24 12:31:29,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:31:29,479 INFO L124 PetriNetUnfolderBase]: 0/75 cut-off events. [2024-10-24 12:31:29,479 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-24 12:31:29,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:31:29,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:31:29,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-24 12:31:29,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:31:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 583304531, now seen corresponding path program 1 times [2024-10-24 12:31:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:31:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064917940] [2024-10-24 12:31:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:31:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:31:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:31:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:31:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:31:31,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064917940] [2024-10-24 12:31:31,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064917940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:31:31,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:31:31,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:31:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163366493] [2024-10-24 12:31:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:31:31,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:31:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:31:31,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:31:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:31:31,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 85 [2024-10-24 12:31:31,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 76 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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) [2024-10-24 12:31:31,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:31:31,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 85 [2024-10-24 12:31:31,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand