./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:18:44,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:18:44,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:18:44,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:18:44,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:18:44,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:18:44,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:18:44,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:18:44,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:18:44,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:18:44,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:18:44,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:18:44,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:18:44,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:18:44,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:18:44,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:18:44,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:18:44,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:18:44,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:18:44,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:18:44,679 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:18:44,680 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:18:44,681 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:18:44,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:18:44,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:18:44,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:18:44,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:18:44,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:18:44,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:18:44,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:18:44,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:18:44,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:18:44,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:18:44,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:44,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:18:44,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:18:44,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:18:44,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:18:44,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:18:44,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:18:44,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:18:44,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:18:44,689 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2024-11-08 17:18:45,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:18:45,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:18:45,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:18:45,129 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:18:45,130 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:18:45,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i Unable to find full path for "g++" [2024-11-08 17:18:47,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:18:48,164 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:18:48,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2024-11-08 17:18:48,195 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/data/2b8e10e5a/0f5dd8a8d85940b0a2f43910464de891/FLAG90610b555 [2024-11-08 17:18:48,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/data/2b8e10e5a/0f5dd8a8d85940b0a2f43910464de891 [2024-11-08 17:18:48,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:18:48,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:18:48,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:48,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:18:48,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:18:48,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:48" (1/1) ... [2024-11-08 17:18:48,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31776efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:48, skipping insertion in model container [2024-11-08 17:18:48,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:48" (1/1) ... [2024-11-08 17:18:48,318 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:18:49,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:49,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:18:49,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:49,863 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:18:49,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49 WrapperNode [2024-11-08 17:18:49,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:49,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:49,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:18:49,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:18:49,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:49,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,059 INFO L138 Inliner]: procedures = 491, calls = 159, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1879 [2024-11-08 17:18:50,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:50,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:18:50,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:18:50,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:18:50,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,206 INFO L175 MemorySlicer]: Split 311 memory accesses to 9 slices as follows [2, 2, 195, 6, 12, 8, 4, 80, 2]. 63 percent of accesses are in the largest equivalence class. The 54 initializations are split as follows [0, 2, 26, 0, 4, 2, 0, 20, 0]. The 95 writes are split as follows [1, 0, 61, 4, 4, 2, 2, 20, 1]. [2024-11-08 17:18:50,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:18:50,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:18:50,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:18:50,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:18:50,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (1/1) ... [2024-11-08 17:18:50,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:50,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:18:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ba545d-17bb-4ba3-833b-ebb7f5ef06ca/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:18:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2024-11-08 17:18:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2024-11-08 17:18:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:18:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:18:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:18:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:18:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:18:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:18:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 17:18:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:18:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-08 17:18:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-08 17:18:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-08 17:18:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-08 17:18:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:18:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:18:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:18:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:18:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:18:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:18:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-08 17:18:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-08 17:18:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-08 17:18:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-08 17:18:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-08 17:18:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-08 17:18:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-08 17:18:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-08 17:18:50,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-08 17:18:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-08 17:18:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:18:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:18:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:18:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:18:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 17:18:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 17:18:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 17:18:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 17:18:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 17:18:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-08 17:18:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:18:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:18:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:18:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 17:18:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 17:18:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 17:18:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 17:18:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 17:18:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-08 17:18:50,464 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:18:51,021 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:18:51,024 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:18:55,127 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:18:55,128 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:18:57,758 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:18:57,758 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:18:57,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:57 BoogieIcfgContainer [2024-11-08 17:18:57,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:18:57,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:18:57,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:18:57,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:18:57,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:18:48" (1/3) ... [2024-11-08 17:18:57,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4f055f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:57, skipping insertion in model container [2024-11-08 17:18:57,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:49" (2/3) ... [2024-11-08 17:18:57,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4f055f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:57, skipping insertion in model container [2024-11-08 17:18:57,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:57" (3/3) ... [2024-11-08 17:18:57,771 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2024-11-08 17:18:57,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:18:57,800 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 520 error locations. [2024-11-08 17:18:57,800 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:18:58,148 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 17:18:58,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 880 places, 966 transitions, 1939 flow [2024-11-08 17:18:58,953 INFO L124 PetriNetUnfolderBase]: 168/1815 cut-off events. [2024-11-08 17:18:58,954 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 17:18:58,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 1815 events. 168/1815 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13490 event pairs, 0 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 932. Up to 6 conditions per place. [2024-11-08 17:18:58,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 880 places, 966 transitions, 1939 flow [2024-11-08 17:18:59,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 880 places, 966 transitions, 1939 flow [2024-11-08 17:18:59,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:18:59,107 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;@2c269507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:18:59,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 565 error locations. [2024-11-08 17:18:59,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:18:59,113 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-08 17:18:59,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:18:59,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:59,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-08 17:18:59,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-08 17:18:59,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash 193074, now seen corresponding path program 1 times [2024-11-08 17:18:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573355892] [2024-11-08 17:18:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573355892] [2024-11-08 17:18:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573355892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:59,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:18:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657348993] [2024-11-08 17:18:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:59,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:18:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:18:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:19:00,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 966 [2024-11-08 17:19:00,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 880 places, 966 transitions, 1939 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2024-11-08 17:19:00,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:00,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 966 [2024-11-08 17:19:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:16,320 INFO L124 PetriNetUnfolderBase]: 36574/80050 cut-off events. [2024-11-08 17:19:16,320 INFO L125 PetriNetUnfolderBase]: For 19/31 co-relation queries the response was YES. [2024-11-08 17:19:16,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145073 conditions, 80050 events. 36574/80050 cut-off events. For 19/31 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 827924 event pairs, 8572 based on Foata normal form. 764/51549 useless extension candidates. Maximal degree in co-relation 143796. Up to 35751 conditions per place. [2024-11-08 17:19:16,772 INFO L140 encePairwiseOnDemand]: 648/966 looper letters, 924 selfloop transitions, 73 changer transitions 0/1228 dead transitions. [2024-11-08 17:19:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 1228 transitions, 4457 flow [2024-11-08 17:19:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:19:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:19:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2129 transitions. [2024-11-08 17:19:16,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7346445824706694 [2024-11-08 17:19:16,814 INFO L175 Difference]: Start difference. First operand has 880 places, 966 transitions, 1939 flow. Second operand 3 states and 2129 transitions. [2024-11-08 17:19:16,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 1228 transitions, 4457 flow [2024-11-08 17:19:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 1228 transitions, 4457 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:19:16,859 INFO L231 Difference]: Finished difference. Result has 688 places, 832 transitions, 2195 flow [2024-11-08 17:19:16,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=966, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2195, PETRI_PLACES=688, PETRI_TRANSITIONS=832} [2024-11-08 17:19:16,870 INFO L277 CegarLoopForPetriNet]: 880 programPoint places, -192 predicate places. [2024-11-08 17:19:16,871 INFO L471 AbstractCegarLoop]: Abstraction has has 688 places, 832 transitions, 2195 flow [2024-11-08 17:19:16,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2024-11-08 17:19:16,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:16,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-08 17:19:16,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:19:16,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-08 17:19:16,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 193075, now seen corresponding path program 1 times [2024-11-08 17:19:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:16,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431970823] [2024-11-08 17:19:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:19:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:17,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431970823] [2024-11-08 17:19:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431970823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:17,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:19:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603130568] [2024-11-08 17:19:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:17,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:19:17,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:17,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:19:17,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:19:17,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 966 [2024-11-08 17:19:17,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 832 transitions, 2195 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2024-11-08 17:19:17,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:17,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 966 [2024-11-08 17:19:17,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:31,490 INFO L124 PetriNetUnfolderBase]: 35651/79178 cut-off events. [2024-11-08 17:19:31,491 INFO L125 PetriNetUnfolderBase]: For 8568/8904 co-relation queries the response was YES. [2024-11-08 17:19:31,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154394 conditions, 79178 events. 35651/79178 cut-off events. For 8568/8904 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 818116 event pairs, 22502 based on Foata normal form. 3/52400 useless extension candidates. Maximal degree in co-relation 153007. Up to 62089 conditions per place. [2024-11-08 17:19:32,028 INFO L140 encePairwiseOnDemand]: 959/966 looper letters, 538 selfloop transitions, 4 changer transitions 0/840 dead transitions. [2024-11-08 17:19:32,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 840 transitions, 3299 flow [2024-11-08 17:19:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:19:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:19:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1320 transitions. [2024-11-08 17:19:32,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4554865424430642 [2024-11-08 17:19:32,036 INFO L175 Difference]: Start difference. First operand has 688 places, 832 transitions, 2195 flow. Second operand 3 states and 1320 transitions. [2024-11-08 17:19:32,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 840 transitions, 3299 flow [2024-11-08 17:19:32,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 840 transitions, 3151 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:19:32,169 INFO L231 Difference]: Finished difference. Result has 686 places, 832 transitions, 2067 flow [2024-11-08 17:19:32,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=966, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2067, PETRI_PLACES=686, PETRI_TRANSITIONS=832} [2024-11-08 17:19:32,171 INFO L277 CegarLoopForPetriNet]: 880 programPoint places, -194 predicate places. [2024-11-08 17:19:32,172 INFO L471 AbstractCegarLoop]: Abstraction has has 686 places, 832 transitions, 2067 flow [2024-11-08 17:19:32,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2024-11-08 17:19:32,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:32,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:19:32,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:19:32,174 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-08 17:19:32,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 185758649, now seen corresponding path program 1 times [2024-11-08 17:19:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208180041] [2024-11-08 17:19:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:19:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:32,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208180041] [2024-11-08 17:19:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208180041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:32,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:32,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:19:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601228927] [2024-11-08 17:19:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:19:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:19:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:19:33,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 966 [2024-11-08 17:19:33,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 832 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2024-11-08 17:19:33,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:33,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 966 [2024-11-08 17:19:33,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:48,431 INFO L124 PetriNetUnfolderBase]: 38986/85025 cut-off events. [2024-11-08 17:19:48,431 INFO L125 PetriNetUnfolderBase]: For 5326/5428 co-relation queries the response was YES. [2024-11-08 17:19:48,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166137 conditions, 85025 events. 38986/85025 cut-off events. For 5326/5428 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 878648 event pairs, 8209 based on Foata normal form. 41/54707 useless extension candidates. Maximal degree in co-relation 164787. Up to 35819 conditions per place. [2024-11-08 17:19:48,985 INFO L140 encePairwiseOnDemand]: 813/966 looper letters, 984 selfloop transitions, 195 changer transitions 0/1407 dead transitions. [2024-11-08 17:19:48,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 1407 transitions, 5620 flow [2024-11-08 17:19:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:19:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:19:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2352 transitions. [2024-11-08 17:19:48,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-11-08 17:19:48,996 INFO L175 Difference]: Start difference. First operand has 686 places, 832 transitions, 2067 flow. Second operand 5 states and 2352 transitions. [2024-11-08 17:19:48,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 1407 transitions, 5620 flow [2024-11-08 17:19:49,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1407 transitions, 5615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:19:49,030 INFO L231 Difference]: Finished difference. Result has 690 places, 938 transitions, 3144 flow [2024-11-08 17:19:49,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=966, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3144, PETRI_PLACES=690, PETRI_TRANSITIONS=938} [2024-11-08 17:19:49,032 INFO L277 CegarLoopForPetriNet]: 880 programPoint places, -190 predicate places. [2024-11-08 17:19:49,033 INFO L471 AbstractCegarLoop]: Abstraction has has 690 places, 938 transitions, 3144 flow [2024-11-08 17:19:49,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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) [2024-11-08 17:19:49,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:49,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:19:49,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:19:49,035 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-08 17:19:49,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash 185758650, now seen corresponding path program 1 times [2024-11-08 17:19:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678861773] [2024-11-08 17:19:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:19:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:49,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678861773] [2024-11-08 17:19:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678861773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:49,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:49,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:19:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246328750] [2024-11-08 17:19:49,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:49,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:19:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:49,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:19:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:19:50,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 966 [2024-11-08 17:19:50,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 938 transitions, 3144 flow. Second operand has 4 states, 4 states have (on average 273.75) internal successors, (1095), 4 states have internal predecessors, (1095), 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) [2024-11-08 17:19:50,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:50,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 966 [2024-11-08 17:19:50,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand