./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_longest.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/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:22:39,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:22:40,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:22:40,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:22:40,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:22:40,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:22:40,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:22:40,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:22:40,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:22:40,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:22:40,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:22:40,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:22:40,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:22:40,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:22:40,085 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:22:40,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:22:40,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:22:40,086 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:22:40,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:22:40,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:22:40,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:22:40,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:22:40,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:22:40,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:22:40,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:22:40,090 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:22:40,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:22:40,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:22:40,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:22:40,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:22:40,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:22:40,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:22:40,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:22:40,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:22:40,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:22:40,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:22:40,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:22:40,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:22:40,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:22:40,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:22:40,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:22:40,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:22:40,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-09 02:22:40,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:22:40,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:22:40,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:22:40,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:22:40,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:22:40,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 02:22:42,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:22:42,850 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:22:42,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 02:22:42,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c81f4d0/d6db58fc3cb842ec9e963374d368d1e1/FLAGf974373d7 [2024-11-09 02:22:42,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c81f4d0/d6db58fc3cb842ec9e963374d368d1e1 [2024-11-09 02:22:42,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:22:42,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:22:42,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:22:42,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:22:42,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:22:42,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:22:42" (1/1) ... [2024-11-09 02:22:42,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e783acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:42, skipping insertion in model container [2024-11-09 02:22:42,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:22:42" (1/1) ... [2024-11-09 02:22:42,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:22:43,505 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/queue_longest.i[43296,43309] [2024-11-09 02:22:43,514 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/queue_longest.i[43503,43516] [2024-11-09 02:22:43,518 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/queue_longest.i[43783,43796] [2024-11-09 02:22:43,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:22:43,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:22:43,712 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/queue_longest.i[43296,43309] [2024-11-09 02:22:43,713 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/queue_longest.i[43503,43516] [2024-11-09 02:22:43,723 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/queue_longest.i[43783,43796] [2024-11-09 02:22:43,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:22:43,887 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:22:43,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43 WrapperNode [2024-11-09 02:22:43,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:22:43,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:22:43,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:22:43,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:22:43,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:43,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,052 INFO L138 Inliner]: procedures = 274, calls = 1656, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1840 [2024-11-09 02:22:44,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:22:44,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:22:44,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:22:44,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:22:44,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,137 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2024-11-09 02:22:44,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:22:44,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:22:44,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:22:44,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:22:44,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (1/1) ... [2024-11-09 02:22:44,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:22:44,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:22:44,276 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 02:22:44,279 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 02:22:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 02:22:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 02:22:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 02:22:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:22:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:22:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:22:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:22:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:22:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:22:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:22:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:22:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:22:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:22:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:22:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:22:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:22:44,334 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 02:22:44,500 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:22:44,502 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:22:46,523 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:22:46,524 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:23:18,138 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:23:18,139 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:23:18,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:23:18 BoogieIcfgContainer [2024-11-09 02:23:18,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:23:18,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:23:18,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:23:18,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:23:18,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:22:42" (1/3) ... [2024-11-09 02:23:18,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afda35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:23:18, skipping insertion in model container [2024-11-09 02:23:18,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:43" (2/3) ... [2024-11-09 02:23:18,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afda35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:23:18, skipping insertion in model container [2024-11-09 02:23:18,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:23:18" (3/3) ... [2024-11-09 02:23:18,157 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-09 02:23:18,177 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:23:18,177 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:23:18,177 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:23:18,292 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:23:18,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 47 transitions, 108 flow [2024-11-09 02:23:18,450 INFO L124 PetriNetUnfolderBase]: 7/45 cut-off events. [2024-11-09 02:23:18,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:23:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 7/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-09 02:23:18,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 47 transitions, 108 flow [2024-11-09 02:23:18,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 43 transitions, 95 flow [2024-11-09 02:23:18,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:23:18,483 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;@5cbb8cba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:23:18,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:23:18,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:23:18,565 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 02:23:18,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:23:18,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:18,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 02:23:18,569 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 4 more)] === [2024-11-09 02:23:18,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash 3813625, now seen corresponding path program 1 times [2024-11-09 02:23:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073725085] [2024-11-09 02:23:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:19,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073725085] [2024-11-09 02:23:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073725085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:19,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:19,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:23:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776477484] [2024-11-09 02:23:19,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:19,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:23:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:23:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:23:19,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:19,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 95 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:19,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:19,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:20,127 INFO L124 PetriNetUnfolderBase]: 425/768 cut-off events. [2024-11-09 02:23:20,129 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-09 02:23:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 768 events. 425/768 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3474 event pairs, 331 based on Foata normal form. 47/726 useless extension candidates. Maximal degree in co-relation 1440. Up to 694 conditions per place. [2024-11-09 02:23:20,141 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 31 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-11-09 02:23:20,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 147 flow [2024-11-09 02:23:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:23:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:23:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-09 02:23:20,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-09 02:23:20,155 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 95 flow. Second operand 2 states and 54 transitions. [2024-11-09 02:23:20,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 147 flow [2024-11-09 02:23:20,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:23:20,160 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 80 flow [2024-11-09 02:23:20,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-09 02:23:20,165 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-11-09 02:23:20,166 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 80 flow [2024-11-09 02:23:20,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:20,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:20,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:20,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:23:20,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:20,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -298041074, now seen corresponding path program 1 times [2024-11-09 02:23:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:20,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503074257] [2024-11-09 02:23:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503074257] [2024-11-09 02:23:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503074257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:20,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:23:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041711596] [2024-11-09 02:23:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:20,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:23:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:23:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:23:20,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:21,451 INFO L124 PetriNetUnfolderBase]: 405/748 cut-off events. [2024-11-09 02:23:21,452 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 02:23:21,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 748 events. 405/748 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3491 event pairs, 304 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1448. Up to 624 conditions per place. [2024-11-09 02:23:21,462 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 40 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-09 02:23:21,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 188 flow [2024-11-09 02:23:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:23:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:23:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-09 02:23:21,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-11-09 02:23:21,465 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 80 flow. Second operand 3 states and 73 transitions. [2024-11-09 02:23:21,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 188 flow [2024-11-09 02:23:21,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:23:21,469 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 82 flow [2024-11-09 02:23:21,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-09 02:23:21,470 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-09 02:23:21,471 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 82 flow [2024-11-09 02:23:21,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:21,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:21,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:21,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:23:21,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:21,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -649333854, now seen corresponding path program 1 times [2024-11-09 02:23:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:21,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620519615] [2024-11-09 02:23:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:24,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620519615] [2024-11-09 02:23:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620519615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:24,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:23:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700688634] [2024-11-09 02:23:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:24,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:23:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:23:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:23:24,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:24,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:24,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:24,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:24,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:26,232 INFO L124 PetriNetUnfolderBase]: 674/1239 cut-off events. [2024-11-09 02:23:26,233 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-09 02:23:26,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 1239 events. 674/1239 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6161 event pairs, 74 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 2421. Up to 658 conditions per place. [2024-11-09 02:23:26,242 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 71 selfloop transitions, 10 changer transitions 3/91 dead transitions. [2024-11-09 02:23:26,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 91 transitions, 371 flow [2024-11-09 02:23:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:23:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:23:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-09 02:23:26,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-11-09 02:23:26,248 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 82 flow. Second operand 6 states and 146 transitions. [2024-11-09 02:23:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 91 transitions, 371 flow [2024-11-09 02:23:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:23:26,254 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 146 flow [2024-11-09 02:23:26,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-09 02:23:26,255 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-09 02:23:26,255 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 146 flow [2024-11-09 02:23:26,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:26,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:26,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:26,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:23:26,256 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:26,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1045997983, now seen corresponding path program 1 times [2024-11-09 02:23:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323175150] [2024-11-09 02:23:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323175150] [2024-11-09 02:23:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323175150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:26,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:26,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:23:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574933853] [2024-11-09 02:23:26,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:26,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:23:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:23:26,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:23:26,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:26,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:26,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:26,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:26,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:27,201 INFO L124 PetriNetUnfolderBase]: 421/812 cut-off events. [2024-11-09 02:23:27,202 INFO L125 PetriNetUnfolderBase]: For 151/154 co-relation queries the response was YES. [2024-11-09 02:23:27,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 812 events. 421/812 cut-off events. For 151/154 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3544 event pairs, 215 based on Foata normal form. 28/816 useless extension candidates. Maximal degree in co-relation 1671. Up to 417 conditions per place. [2024-11-09 02:23:27,207 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 37 selfloop transitions, 4 changer transitions 3/50 dead transitions. [2024-11-09 02:23:27,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 217 flow [2024-11-09 02:23:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:23:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:23:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-09 02:23:27,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-11-09 02:23:27,209 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 146 flow. Second operand 3 states and 74 transitions. [2024-11-09 02:23:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 217 flow [2024-11-09 02:23:27,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:23:27,212 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 108 flow [2024-11-09 02:23:27,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-11-09 02:23:27,212 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-09 02:23:27,213 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 108 flow [2024-11-09 02:23:27,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:27,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:27,213 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] [2024-11-09 02:23:27,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:23:27,214 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:27,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:27,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1650734788, now seen corresponding path program 1 times [2024-11-09 02:23:27,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:27,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421734049] [2024-11-09 02:23:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:27,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421734049] [2024-11-09 02:23:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421734049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:23:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528393270] [2024-11-09 02:23:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:27,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:23:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:23:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:23:27,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:27,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:27,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:27,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:27,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:28,678 INFO L124 PetriNetUnfolderBase]: 249/544 cut-off events. [2024-11-09 02:23:28,678 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-09 02:23:28,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 544 events. 249/544 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2170 event pairs, 85 based on Foata normal form. 32/566 useless extension candidates. Maximal degree in co-relation 1123. Up to 252 conditions per place. [2024-11-09 02:23:28,682 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 34 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-11-09 02:23:28,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 211 flow [2024-11-09 02:23:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:23:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:23:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-09 02:23:28,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-11-09 02:23:28,683 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 108 flow. Second operand 3 states and 71 transitions. [2024-11-09 02:23:28,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 211 flow [2024-11-09 02:23:28,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 201 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:23:28,686 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 110 flow [2024-11-09 02:23:28,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-11-09 02:23:28,687 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-09 02:23:28,687 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 110 flow [2024-11-09 02:23:28,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:28,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:28,688 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] [2024-11-09 02:23:28,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:23:28,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:28,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 891675038, now seen corresponding path program 1 times [2024-11-09 02:23:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903835068] [2024-11-09 02:23:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:33,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903835068] [2024-11-09 02:23:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903835068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:23:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835599104] [2024-11-09 02:23:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:33,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:23:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:23:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:23:33,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:33,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 110 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:33,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:33,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:33,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:35,009 INFO L124 PetriNetUnfolderBase]: 370/810 cut-off events. [2024-11-09 02:23:35,009 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2024-11-09 02:23:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 810 events. 370/810 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3857 event pairs, 69 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 1767. Up to 260 conditions per place. [2024-11-09 02:23:35,014 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 64 selfloop transitions, 16 changer transitions 8/94 dead transitions. [2024-11-09 02:23:35,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 94 transitions, 463 flow [2024-11-09 02:23:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:23:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:23:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-09 02:23:35,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2024-11-09 02:23:35,016 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 110 flow. Second operand 9 states and 177 transitions. [2024-11-09 02:23:35,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 94 transitions, 463 flow [2024-11-09 02:23:35,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 94 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:23:35,020 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 216 flow [2024-11-09 02:23:35,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-11-09 02:23:35,021 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-09 02:23:35,021 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 216 flow [2024-11-09 02:23:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:35,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:35,021 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] [2024-11-09 02:23:35,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:23:35,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:35,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1627513118, now seen corresponding path program 2 times [2024-11-09 02:23:35,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:35,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632112760] [2024-11-09 02:23:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:39,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632112760] [2024-11-09 02:23:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632112760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:39,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:23:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907156250] [2024-11-09 02:23:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:39,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:23:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:23:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:23:39,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:39,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:39,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:39,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:39,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:40,965 INFO L124 PetriNetUnfolderBase]: 479/1066 cut-off events. [2024-11-09 02:23:40,966 INFO L125 PetriNetUnfolderBase]: For 835/837 co-relation queries the response was YES. [2024-11-09 02:23:40,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1066 events. 479/1066 cut-off events. For 835/837 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5847 event pairs, 136 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 2783. Up to 636 conditions per place. [2024-11-09 02:23:40,973 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 70 selfloop transitions, 15 changer transitions 4/95 dead transitions. [2024-11-09 02:23:40,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 584 flow [2024-11-09 02:23:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:23:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:23:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-11-09 02:23:40,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3947990543735225 [2024-11-09 02:23:40,975 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 216 flow. Second operand 9 states and 167 transitions. [2024-11-09 02:23:40,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 584 flow [2024-11-09 02:23:40,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 566 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 02:23:40,983 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 361 flow [2024-11-09 02:23:40,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=361, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-09 02:23:40,985 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-09 02:23:40,985 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 361 flow [2024-11-09 02:23:40,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:40,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:40,985 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] [2024-11-09 02:23:40,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:23:40,986 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:40,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1253925648, now seen corresponding path program 3 times [2024-11-09 02:23:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92261706] [2024-11-09 02:23:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:45,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92261706] [2024-11-09 02:23:45,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92261706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:23:45,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:23:45,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:23:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338352758] [2024-11-09 02:23:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:23:45,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:23:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:23:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:23:45,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-09 02:23:45,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:45,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:45,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-09 02:23:45,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:46,601 INFO L124 PetriNetUnfolderBase]: 599/1308 cut-off events. [2024-11-09 02:23:46,601 INFO L125 PetriNetUnfolderBase]: For 1700/1701 co-relation queries the response was YES. [2024-11-09 02:23:46,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 1308 events. 599/1308 cut-off events. For 1700/1701 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7403 event pairs, 58 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 3687. Up to 322 conditions per place. [2024-11-09 02:23:46,618 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 32 changer transitions 6/135 dead transitions. [2024-11-09 02:23:46,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 904 flow [2024-11-09 02:23:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:23:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:23:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-11-09 02:23:46,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095744680851064 [2024-11-09 02:23:46,621 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 361 flow. Second operand 12 states and 231 transitions. [2024-11-09 02:23:46,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 904 flow [2024-11-09 02:23:46,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 135 transitions, 858 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-09 02:23:46,634 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 485 flow [2024-11-09 02:23:46,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=485, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-11-09 02:23:46,637 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-09 02:23:46,638 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 485 flow [2024-11-09 02:23:46,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:46,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:46,639 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] [2024-11-09 02:23:46,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:23:46,639 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:23:46,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash -442849474, now seen corresponding path program 4 times [2024-11-09 02:23:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:46,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344274924] [2024-11-09 02:23:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat