./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:20:54,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:20:54,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:20:54,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:20:54,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:20:54,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:20:54,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:20:54,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:20:54,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:20:54,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:20:54,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:20:54,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:20:54,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:20:54,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:20:54,982 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:20:54,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:20:54,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:20:54,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:20:54,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:20:54,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:20:54,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:20:54,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:20:54,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:20:54,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:20:54,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:20:54,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:20:54,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:20:54,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:20:54,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:20:54,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:20:54,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:20:54,988 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c [2024-11-13 15:20:55,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:20:55,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:20:55,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:20:55,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:20:55,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:20:55,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i Unable to find full path for "g++" [2024-11-13 15:20:57,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:20:58,331 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:20:58,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-11-13 15:20:58,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/data/e15cf1600/1f1b33ecab2647ec8275ccf64af02fdb/FLAG5b16f73a1 [2024-11-13 15:20:58,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/data/e15cf1600/1f1b33ecab2647ec8275ccf64af02fdb [2024-11-13 15:20:58,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:20:58,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:20:58,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:20:58,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:20:58,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:20:58,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:20:58" (1/1) ... [2024-11-13 15:20:58,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c80f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:58, skipping insertion in model container [2024-11-13 15:20:58,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:20:58" (1/1) ... [2024-11-13 15:20:58,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:20:59,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:20:59,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:20:59,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:20:59,274 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:20:59,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59 WrapperNode [2024-11-13 15:20:59,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:20:59,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:20:59,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:20:59,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:20:59,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,331 INFO L138 Inliner]: procedures = 255, calls = 62, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 175 [2024-11-13 15:20:59,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:20:59,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:20:59,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:20:59,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:20:59,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,369 INFO L175 MemorySlicer]: Split 28 memory accesses to 5 slices as follows [2, 2, 8, 8, 8]. 29 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [2, 0, 8, 8, 8]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-11-13 15:20:59,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:20:59,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:20:59,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:20:59,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:20:59,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (1/1) ... [2024-11-13 15:20:59,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:20:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:59,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:20:59,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:20:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:20:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:20:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:20:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:20:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 15:20:59,510 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 15:20:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:20:59,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:20:59,513 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:20:59,772 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:20:59,774 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:21:00,194 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:21:00,194 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:21:00,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:21:00,600 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-13 15:21:00,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:21:00 BoogieIcfgContainer [2024-11-13 15:21:00,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:21:00,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:21:00,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:21:00,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:21:00,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:20:58" (1/3) ... [2024-11-13 15:21:00,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c7c10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:21:00, skipping insertion in model container [2024-11-13 15:21:00,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:20:59" (2/3) ... [2024-11-13 15:21:00,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c7c10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:21:00, skipping insertion in model container [2024-11-13 15:21:00,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:21:00" (3/3) ... [2024-11-13 15:21:00,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-11-13 15:21:00,638 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:21:00,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_27-funptr_racing.i that has 2 procedures, 72 locations, 1 initial locations, 9 loop locations, and 6 error locations. [2024-11-13 15:21:00,642 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:21:00,728 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 15:21:00,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 90 transitions, 187 flow [2024-11-13 15:21:00,864 INFO L124 PetriNetUnfolderBase]: 22/125 cut-off events. [2024-11-13 15:21:00,867 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:21:00,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 22/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 481 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-11-13 15:21:00,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 90 transitions, 187 flow [2024-11-13 15:21:00,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 90 transitions, 187 flow [2024-11-13 15:21:00,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:21:00,922 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=None, 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;@52f4c1b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:21:00,922 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:21:00,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:21:00,936 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:21:00,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:21:00,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:00,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:21:00,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:00,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 481541, now seen corresponding path program 1 times [2024-11-13 15:21:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584326696] [2024-11-13 15:21:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584326696] [2024-11-13 15:21:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584326696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:01,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:01,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:21:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896159724] [2024-11-13 15:21:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:01,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:21:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:21:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:21:01,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2024-11-13 15:21:01,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 90 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-13 15:21:01,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:01,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2024-11-13 15:21:01,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:02,191 INFO L124 PetriNetUnfolderBase]: 417/1219 cut-off events. [2024-11-13 15:21:02,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:21:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1219 events. 417/1219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7516 event pairs, 353 based on Foata normal form. 220/1383 useless extension candidates. Maximal degree in co-relation 2039. Up to 778 conditions per place. [2024-11-13 15:21:02,234 INFO L140 encePairwiseOnDemand]: 70/90 looper letters, 65 selfloop transitions, 2 changer transitions 1/94 dead transitions. [2024-11-13 15:21:02,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 331 flow [2024-11-13 15:21:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:21:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:21:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-13 15:21:02,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-13 15:21:02,261 INFO L175 Difference]: Start difference. First operand has 75 places, 90 transitions, 187 flow. Second operand 3 states and 176 transitions. [2024-11-13 15:21:02,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 331 flow [2024-11-13 15:21:02,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:21:02,281 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 151 flow [2024-11-13 15:21:02,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-13 15:21:02,291 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-13 15:21:02,292 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 151 flow [2024-11-13 15:21:02,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-13 15:21:02,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:02,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:21:02,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:21:02,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:02,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash 481542, now seen corresponding path program 1 times [2024-11-13 15:21:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:02,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947813501] [2024-11-13 15:21:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:02,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947813501] [2024-11-13 15:21:02,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947813501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:02,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:02,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:21:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58183342] [2024-11-13 15:21:02,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:02,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:21:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:21:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:21:02,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 90 [2024-11-13 15:21:02,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-13 15:21:02,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:02,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 90 [2024-11-13 15:21:02,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:03,068 INFO L124 PetriNetUnfolderBase]: 384/1114 cut-off events. [2024-11-13 15:21:03,069 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-13 15:21:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1114 events. 384/1114 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7203 event pairs, 15 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 1894. Up to 771 conditions per place. [2024-11-13 15:21:03,085 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-11-13 15:21:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 333 flow [2024-11-13 15:21:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:21:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:21:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-13 15:21:03,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-13 15:21:03,088 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 151 flow. Second operand 3 states and 156 transitions. [2024-11-13 15:21:03,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 333 flow [2024-11-13 15:21:03,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:21:03,100 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 157 flow [2024-11-13 15:21:03,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-13 15:21:03,101 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-13 15:21:03,102 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 157 flow [2024-11-13 15:21:03,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-13 15:21:03,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:03,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 15:21:03,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:21:03,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:03,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1947428891, now seen corresponding path program 1 times [2024-11-13 15:21:03,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251190902] [2024-11-13 15:21:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:03,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251190902] [2024-11-13 15:21:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251190902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199920926] [2024-11-13 15:21:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:03,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:03,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:03,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:03,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:21:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:21:03,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:03,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:21:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:03,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199920926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:04,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-13 15:21:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890747516] [2024-11-13 15:21:04,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:04,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:21:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:21:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:21:04,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2024-11-13 15:21:04,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 157 flow. Second operand has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 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) [2024-11-13 15:21:04,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:04,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2024-11-13 15:21:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:04,376 INFO L124 PetriNetUnfolderBase]: 70/222 cut-off events. [2024-11-13 15:21:04,376 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-13 15:21:04,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 222 events. 70/222 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 798 event pairs, 28 based on Foata normal form. 46/263 useless extension candidates. Maximal degree in co-relation 415. Up to 138 conditions per place. [2024-11-13 15:21:04,378 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 51 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-13 15:21:04,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 252 flow [2024-11-13 15:21:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:21:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:21:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-13 15:21:04,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-11-13 15:21:04,381 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 157 flow. Second operand 4 states and 167 transitions. [2024-11-13 15:21:04,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 252 flow [2024-11-13 15:21:04,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:21:04,384 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 94 flow [2024-11-13 15:21:04,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-13 15:21:04,385 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2024-11-13 15:21:04,385 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 94 flow [2024-11-13 15:21:04,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 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) [2024-11-13 15:21:04,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:04,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-13 15:21:04,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:21:04,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:04,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:04,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash -240752988, now seen corresponding path program 1 times [2024-11-13 15:21:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762504178] [2024-11-13 15:21:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:04,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:21:04,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:21:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:21:04,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:21:04,706 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:21:04,707 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 15:21:04,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-13 15:21:04,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-13 15:21:04,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-13 15:21:04,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-13 15:21:04,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-13 15:21:04,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 15:21:04,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:21:04,713 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 15:21:04,719 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:21:04,722 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 15:21:04,777 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:21:04,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 141 transitions, 298 flow [2024-11-13 15:21:04,824 INFO L124 PetriNetUnfolderBase]: 41/223 cut-off events. [2024-11-13 15:21:04,824 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 15:21:04,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 223 events. 41/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1029 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2024-11-13 15:21:04,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 141 transitions, 298 flow [2024-11-13 15:21:04,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 141 transitions, 298 flow [2024-11-13 15:21:04,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:21:04,836 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=None, 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;@52f4c1b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:21:04,836 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:21:04,841 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:21:04,842 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:21:04,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:21:04,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:04,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:21:04,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 621554, now seen corresponding path program 1 times [2024-11-13 15:21:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009148443] [2024-11-13 15:21:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009148443] [2024-11-13 15:21:04,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009148443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:04,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:04,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:21:04,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9201449] [2024-11-13 15:21:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:04,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:21:04,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:21:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:21:04,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 141 [2024-11-13 15:21:04,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-11-13 15:21:04,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:04,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 141 [2024-11-13 15:21:04,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:12,134 INFO L124 PetriNetUnfolderBase]: 20611/40354 cut-off events. [2024-11-13 15:21:12,136 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-13 15:21:12,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71989 conditions, 40354 events. 20611/40354 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 377806 event pairs, 17426 based on Foata normal form. 8616/46783 useless extension candidates. Maximal degree in co-relation 60927. Up to 27900 conditions per place. [2024-11-13 15:21:12,539 INFO L140 encePairwiseOnDemand]: 109/141 looper letters, 113 selfloop transitions, 2 changer transitions 1/156 dead transitions. [2024-11-13 15:21:12,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 560 flow [2024-11-13 15:21:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:21:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:21:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-13 15:21:12,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855791962174941 [2024-11-13 15:21:12,548 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 298 flow. Second operand 3 states and 290 transitions. [2024-11-13 15:21:12,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 560 flow [2024-11-13 15:21:12,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:21:12,555 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 238 flow [2024-11-13 15:21:12,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-11-13 15:21:12,558 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-11-13 15:21:12,558 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 238 flow [2024-11-13 15:21:12,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-11-13 15:21:12,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:12,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:21:12,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:21:12,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:12,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 621555, now seen corresponding path program 1 times [2024-11-13 15:21:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549970093] [2024-11-13 15:21:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549970093] [2024-11-13 15:21:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549970093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:12,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:12,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:21:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656718440] [2024-11-13 15:21:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:12,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:21:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:21:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:21:12,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-11-13 15:21:12,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-13 15:21:12,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:12,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-11-13 15:21:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:16,575 INFO L124 PetriNetUnfolderBase]: 18236/37344 cut-off events. [2024-11-13 15:21:16,575 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-11-13 15:21:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65947 conditions, 37344 events. 18236/37344 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 360868 event pairs, 14096 based on Foata normal form. 1/35006 useless extension candidates. Maximal degree in co-relation 61203. Up to 27850 conditions per place. [2024-11-13 15:21:16,791 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 91 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-11-13 15:21:16,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 474 flow [2024-11-13 15:21:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:21:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:21:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-13 15:21:16,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-11-13 15:21:16,943 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 238 flow. Second operand 3 states and 224 transitions. [2024-11-13 15:21:16,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 474 flow [2024-11-13 15:21:17,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 134 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:21:17,080 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 248 flow [2024-11-13 15:21:17,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-11-13 15:21:17,081 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-11-13 15:21:17,081 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 248 flow [2024-11-13 15:21:17,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-13 15:21:17,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:17,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 15:21:17,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:21:17,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:17,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1485701695, now seen corresponding path program 1 times [2024-11-13 15:21:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:17,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573052982] [2024-11-13 15:21:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:17,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573052982] [2024-11-13 15:21:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573052982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994627816] [2024-11-13 15:21:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:17,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:17,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:17,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:21:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:17,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:21:17,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:17,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:21:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:17,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994627816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:17,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-13 15:21:17,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220410722] [2024-11-13 15:21:17,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:17,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:21:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:21:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:21:17,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 141 [2024-11-13 15:21:17,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 248 flow. Second operand has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 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) [2024-11-13 15:21:17,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:17,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 141 [2024-11-13 15:21:17,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:21:19,129 INFO L124 PetriNetUnfolderBase]: 4048/7420 cut-off events. [2024-11-13 15:21:19,130 INFO L125 PetriNetUnfolderBase]: For 1240/1240 co-relation queries the response was YES. [2024-11-13 15:21:19,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14491 conditions, 7420 events. 4048/7420 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 53498 event pairs, 432 based on Foata normal form. 1198/8146 useless extension candidates. Maximal degree in co-relation 5290. Up to 5146 conditions per place. [2024-11-13 15:21:19,176 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 123 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2024-11-13 15:21:19,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 580 flow [2024-11-13 15:21:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:21:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-11-13 15:21:19,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-11-13 15:21:19,179 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 248 flow. Second operand 5 states and 340 transitions. [2024-11-13 15:21:19,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 580 flow [2024-11-13 15:21:19,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 155 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:21:19,184 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 186 flow [2024-11-13 15:21:19,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-11-13 15:21:19,185 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -24 predicate places. [2024-11-13 15:21:19,186 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 186 flow [2024-11-13 15:21:19,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 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) [2024-11-13 15:21:19,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:19,187 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-13 15:21:19,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:21:19,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e318f09-fb41-4667-aae0-180ab44ed53b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:19,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:19,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2128460935, now seen corresponding path program 1 times [2024-11-13 15:21:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:19,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151565936] [2024-11-13 15:21:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:21:19,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:21:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:21:19,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:21:19,469 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:21:19,469 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-13 15:21:19,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 15:21:19,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:21:19,471 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 15:21:19,471 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:21:19,472 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 15:21:19,542 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:21:19,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 192 transitions, 411 flow [2024-11-13 15:21:19,599 INFO L124 PetriNetUnfolderBase]: 63/342 cut-off events. [2024-11-13 15:21:19,599 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-13 15:21:19,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 342 events. 63/342 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1681 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 234. Up to 12 conditions per place. [2024-11-13 15:21:19,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 192 transitions, 411 flow [2024-11-13 15:21:19,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 192 transitions, 411 flow [2024-11-13 15:21:19,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:21:19,615 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=None, 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;@52f4c1b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:21:19,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:21:19,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:21:19,620 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:21:19,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:21:19,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:21:19,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:21:19,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-13 15:21:19,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash 812210, now seen corresponding path program 1 times [2024-11-13 15:21:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339435777] [2024-11-13 15:21:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:19,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:19,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:19,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339435777] [2024-11-13 15:21:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339435777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:21:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100511461] [2024-11-13 15:21:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:19,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:21:19,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:21:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:21:19,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 192 [2024-11-13 15:21:19,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 192 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:19,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:21:19,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 192 [2024-11-13 15:21:19,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand