./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:32:44,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:32:44,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:32:44,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:32:44,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:32:44,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:32:44,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:32:44,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:32:44,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:32:44,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:32:44,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:32:44,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:32:44,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:32:44,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:32:44,757 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:32:44,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:32:44,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:32:44,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:32:44,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:32:44,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:32:44,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:32:44,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:32:44,761 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:32:44,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:32:44,762 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:32:44,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:32:44,762 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:32:44,763 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:32:44,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:32:44,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:32:44,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:32:44,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:32:44,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:32:44,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:32:44,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:32:44,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:32:44,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:32:44,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:32:44,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:32:44,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:32:44,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:32:44,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:32:44,765 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-20 17:32:44,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:32:45,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:32:45,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:32:45,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:32:45,005 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:32:45,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-20 17:32:46,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:32:46,603 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:32:46,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-20 17:32:46,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0640f7029/f7a42c547147471e8468f733cbd6a08a/FLAG0a38129f3 [2024-11-20 17:32:46,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0640f7029/f7a42c547147471e8468f733cbd6a08a [2024-11-20 17:32:46,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:32:46,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:32:46,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:32:46,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:32:46,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:32:46,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:46" (1/1) ... [2024-11-20 17:32:46,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2669512b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:46, skipping insertion in model container [2024-11-20 17:32:46,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:46" (1/1) ... [2024-11-20 17:32:46,930 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:32:47,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:32:47,500 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:32:47,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:32:47,717 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:32:47,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47 WrapperNode [2024-11-20 17:32:47,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:32:47,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:32:47,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:32:47,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:32:47,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,785 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2024-11-20 17:32:47,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:32:47,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:32:47,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:32:47,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:32:47,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,827 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [1, 1, 5, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 0, 5, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [1, 1, 0, 1, 1, 1, 1, 1, 1]. [2024-11-20 17:32:47,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:32:47,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:32:47,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:32:47,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:32:47,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (1/1) ... [2024-11-20 17:32:47,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:32:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:32:47,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:32:47,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:32:47,957 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-20 17:32:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-20 17:32:47,957 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-20 17:32:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-20 17:32:47,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 17:32:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 17:32:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:32:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:32:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:32:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-20 17:32:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 17:32:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-20 17:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-20 17:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-20 17:32:47,963 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:32:48,227 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:32:48,228 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:32:48,465 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:32:48,465 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:32:48,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:32:48,563 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-20 17:32:48,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:48 BoogieIcfgContainer [2024-11-20 17:32:48,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:32:48,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:32:48,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:32:48,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:32:48,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:32:46" (1/3) ... [2024-11-20 17:32:48,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7296dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:48, skipping insertion in model container [2024-11-20 17:32:48,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:47" (2/3) ... [2024-11-20 17:32:48,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7296dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:48, skipping insertion in model container [2024-11-20 17:32:48,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:48" (3/3) ... [2024-11-20 17:32:48,572 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-20 17:32:48,585 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:32:48,586 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-20 17:32:48,586 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:32:48,672 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:32:48,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 140 transitions, 294 flow [2024-11-20 17:32:48,756 INFO L124 PetriNetUnfolderBase]: 39/138 cut-off events. [2024-11-20 17:32:48,756 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:32:48,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 39/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2024-11-20 17:32:48,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 140 transitions, 294 flow [2024-11-20 17:32:48,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 137 transitions, 286 flow [2024-11-20 17:32:48,778 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:32:48,786 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;@2842ba85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:32:48,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-20 17:32:48,788 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:32:48,788 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 17:32:48,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:32:48,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:48,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:32:48,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:48,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash 587239, now seen corresponding path program 1 times [2024-11-20 17:32:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:48,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137301019] [2024-11-20 17:32:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137301019] [2024-11-20 17:32:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137301019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:49,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:49,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:32:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235176568] [2024-11-20 17:32:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:49,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:49,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-20 17:32:49,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:49,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:49,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-20 17:32:49,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:49,630 INFO L124 PetriNetUnfolderBase]: 1073/3046 cut-off events. [2024-11-20 17:32:49,631 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-20 17:32:49,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 3046 events. 1073/3046 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26072 event pairs, 393 based on Foata normal form. 1045/3132 useless extension candidates. Maximal degree in co-relation 4538. Up to 885 conditions per place. [2024-11-20 17:32:49,656 INFO L140 encePairwiseOnDemand]: 112/140 looper letters, 64 selfloop transitions, 9 changer transitions 5/136 dead transitions. [2024-11-20 17:32:49,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 438 flow [2024-11-20 17:32:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2024-11-20 17:32:49,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7761904761904762 [2024-11-20 17:32:49,675 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 286 flow. Second operand 3 states and 326 transitions. [2024-11-20 17:32:49,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 438 flow [2024-11-20 17:32:49,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:32:49,684 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 253 flow [2024-11-20 17:32:49,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-11-20 17:32:49,689 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-20 17:32:49,689 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 253 flow [2024-11-20 17:32:49,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:49,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:49,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:49,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:32:49,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:49,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534116, now seen corresponding path program 1 times [2024-11-20 17:32:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319616637] [2024-11-20 17:32:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319616637] [2024-11-20 17:32:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319616637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:49,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:49,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833634187] [2024-11-20 17:32:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:49,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:49,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:49,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:49,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-20 17:32:49,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:49,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:50,073 INFO L124 PetriNetUnfolderBase]: 1177/2824 cut-off events. [2024-11-20 17:32:50,074 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-11-20 17:32:50,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 2824 events. 1177/2824 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21708 event pairs, 843 based on Foata normal form. 0/2145 useless extension candidates. Maximal degree in co-relation 2039. Up to 1653 conditions per place. [2024-11-20 17:32:50,091 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 59 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-20 17:32:50,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 403 flow [2024-11-20 17:32:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-11-20 17:32:50,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-20 17:32:50,097 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 253 flow. Second operand 3 states and 265 transitions. [2024-11-20 17:32:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 403 flow [2024-11-20 17:32:50,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:50,103 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 246 flow [2024-11-20 17:32:50,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-11-20 17:32:50,105 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2024-11-20 17:32:50,105 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 246 flow [2024-11-20 17:32:50,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-20 17:32:50,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:50,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:50,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:32:50,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:50,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534115, now seen corresponding path program 1 times [2024-11-20 17:32:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603922781] [2024-11-20 17:32:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:50,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603922781] [2024-11-20 17:32:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603922781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:50,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485830088] [2024-11-20 17:32:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:50,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:50,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:50,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-20 17:32:50,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:50,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:50,505 INFO L124 PetriNetUnfolderBase]: 1175/2823 cut-off events. [2024-11-20 17:32:50,505 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-20 17:32:50,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2823 events. 1175/2823 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21796 event pairs, 841 based on Foata normal form. 0/2138 useless extension candidates. Maximal degree in co-relation 4787. Up to 1659 conditions per place. [2024-11-20 17:32:50,523 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 56 selfloop transitions, 5 changer transitions 2/117 dead transitions. [2024-11-20 17:32:50,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 404 flow [2024-11-20 17:32:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-20 17:32:50,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-20 17:32:50,525 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 246 flow. Second operand 3 states and 267 transitions. [2024-11-20 17:32:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 404 flow [2024-11-20 17:32:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:50,530 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 282 flow [2024-11-20 17:32:50,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2024-11-20 17:32:50,531 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-20 17:32:50,531 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 282 flow [2024-11-20 17:32:50,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-20 17:32:50,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:50,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:50,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:32:50,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:50,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash -741985710, now seen corresponding path program 1 times [2024-11-20 17:32:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147945997] [2024-11-20 17:32:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147945997] [2024-11-20 17:32:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147945997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:32:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197085275] [2024-11-20 17:32:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:50,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:32:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:32:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:32:50,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-20 17:32:50,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2024-11-20 17:32:50,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:50,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-20 17:32:50,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:51,013 INFO L124 PetriNetUnfolderBase]: 1536/3282 cut-off events. [2024-11-20 17:32:51,013 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2024-11-20 17:32:51,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 3282 events. 1536/3282 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23679 event pairs, 540 based on Foata normal form. 0/2683 useless extension candidates. Maximal degree in co-relation 6075. Up to 1148 conditions per place. [2024-11-20 17:32:51,031 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 119 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2024-11-20 17:32:51,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 724 flow [2024-11-20 17:32:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:32:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:32:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2024-11-20 17:32:51,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485714285714286 [2024-11-20 17:32:51,033 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 282 flow. Second operand 5 states and 454 transitions. [2024-11-20 17:32:51,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 724 flow [2024-11-20 17:32:51,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 174 transitions, 708 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 17:32:51,039 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 258 flow [2024-11-20 17:32:51,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-11-20 17:32:51,043 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-20 17:32:51,043 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 258 flow [2024-11-20 17:32:51,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2024-11-20 17:32:51,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:51,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:51,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:32:51,045 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:51,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 359007367, now seen corresponding path program 1 times [2024-11-20 17:32:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:51,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792575294] [2024-11-20 17:32:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:51,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:51,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792575294] [2024-11-20 17:32:51,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792575294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:51,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:51,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:51,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986495833] [2024-11-20 17:32:51,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:51,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:51,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:51,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:51,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:51,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:51,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:51,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:51,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:51,471 INFO L124 PetriNetUnfolderBase]: 2419/5138 cut-off events. [2024-11-20 17:32:51,472 INFO L125 PetriNetUnfolderBase]: For 782/805 co-relation queries the response was YES. [2024-11-20 17:32:51,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 5138 events. 2419/5138 cut-off events. For 782/805 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 40535 event pairs, 1228 based on Foata normal form. 22/4183 useless extension candidates. Maximal degree in co-relation 9383. Up to 2199 conditions per place. [2024-11-20 17:32:51,505 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 74 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-20 17:32:51,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 480 flow [2024-11-20 17:32:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-20 17:32:51,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-20 17:32:51,510 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 258 flow. Second operand 3 states and 276 transitions. [2024-11-20 17:32:51,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 480 flow [2024-11-20 17:32:51,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:51,516 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 256 flow [2024-11-20 17:32:51,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-11-20 17:32:51,517 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-20 17:32:51,518 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 256 flow [2024-11-20 17:32:51,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:51,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:51,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:51,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:32:51,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:51,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash 359007368, now seen corresponding path program 1 times [2024-11-20 17:32:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:51,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548183054] [2024-11-20 17:32:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548183054] [2024-11-20 17:32:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548183054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:51,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:51,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:51,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295100023] [2024-11-20 17:32:51,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:51,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:51,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:51,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:51,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:51,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:51,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:51,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:51,995 INFO L124 PetriNetUnfolderBase]: 2537/5279 cut-off events. [2024-11-20 17:32:51,995 INFO L125 PetriNetUnfolderBase]: For 1156/1179 co-relation queries the response was YES. [2024-11-20 17:32:52,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 5279 events. 2537/5279 cut-off events. For 1156/1179 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 41234 event pairs, 1305 based on Foata normal form. 22/4207 useless extension candidates. Maximal degree in co-relation 9784. Up to 2503 conditions per place. [2024-11-20 17:32:52,014 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 72 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2024-11-20 17:32:52,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 482 flow [2024-11-20 17:32:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-20 17:32:52,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2024-11-20 17:32:52,016 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 256 flow. Second operand 3 states and 278 transitions. [2024-11-20 17:32:52,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 482 flow [2024-11-20 17:32:52,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 126 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:52,020 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 304 flow [2024-11-20 17:32:52,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-11-20 17:32:52,021 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -11 predicate places. [2024-11-20 17:32:52,021 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 304 flow [2024-11-20 17:32:52,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-20 17:32:52,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:52,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:52,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:32:52,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:52,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 151655789, now seen corresponding path program 1 times [2024-11-20 17:32:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511365582] [2024-11-20 17:32:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511365582] [2024-11-20 17:32:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511365582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:52,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:52,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:32:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271260008] [2024-11-20 17:32:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:52,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:52,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-20 17:32:52,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2024-11-20 17:32:52,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:52,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-20 17:32:52,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:52,415 INFO L124 PetriNetUnfolderBase]: 1574/3818 cut-off events. [2024-11-20 17:32:52,415 INFO L125 PetriNetUnfolderBase]: For 2337/2337 co-relation queries the response was YES. [2024-11-20 17:32:52,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 3818 events. 1574/3818 cut-off events. For 2337/2337 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30499 event pairs, 1222 based on Foata normal form. 0/3032 useless extension candidates. Maximal degree in co-relation 7610. Up to 2329 conditions per place. [2024-11-20 17:32:52,441 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 72 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-20 17:32:52,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 534 flow [2024-11-20 17:32:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-20 17:32:52,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-20 17:32:52,443 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 304 flow. Second operand 3 states and 276 transitions. [2024-11-20 17:32:52,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 534 flow [2024-11-20 17:32:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 502 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-20 17:32:52,454 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 296 flow [2024-11-20 17:32:52,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-11-20 17:32:52,455 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-20 17:32:52,456 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 296 flow [2024-11-20 17:32:52,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2024-11-20 17:32:52,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:52,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:52,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:32:52,457 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:52,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash 493964998, now seen corresponding path program 1 times [2024-11-20 17:32:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217959689] [2024-11-20 17:32:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217959689] [2024-11-20 17:32:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217959689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309089870] [2024-11-20 17:32:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:52,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:52,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-20 17:32:52,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:52,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:52,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:52,855 INFO L124 PetriNetUnfolderBase]: 1743/4077 cut-off events. [2024-11-20 17:32:52,855 INFO L125 PetriNetUnfolderBase]: For 1308/1354 co-relation queries the response was YES. [2024-11-20 17:32:52,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8602 conditions, 4077 events. 1743/4077 cut-off events. For 1308/1354 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 32331 event pairs, 1240 based on Foata normal form. 46/3322 useless extension candidates. Maximal degree in co-relation 8277. Up to 2270 conditions per place. [2024-11-20 17:32:52,872 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 70 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-20 17:32:52,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 509 flow [2024-11-20 17:32:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-20 17:32:52,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-20 17:32:52,874 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 296 flow. Second operand 3 states and 267 transitions. [2024-11-20 17:32:52,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 509 flow [2024-11-20 17:32:52,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 502 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:52,878 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 296 flow [2024-11-20 17:32:52,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-20 17:32:52,878 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-20 17:32:52,878 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 296 flow [2024-11-20 17:32:52,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-20 17:32:52,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:52,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:52,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:32:52,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:52,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 493964999, now seen corresponding path program 1 times [2024-11-20 17:32:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:52,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151994720] [2024-11-20 17:32:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:52,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:52,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151994720] [2024-11-20 17:32:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151994720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:52,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:52,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:32:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395813514] [2024-11-20 17:32:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:52,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:53,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-20 17:32:53,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-20 17:32:53,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:53,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-20 17:32:53,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:53,301 INFO L124 PetriNetUnfolderBase]: 1749/4088 cut-off events. [2024-11-20 17:32:53,301 INFO L125 PetriNetUnfolderBase]: For 1433/1481 co-relation queries the response was YES. [2024-11-20 17:32:53,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8676 conditions, 4088 events. 1749/4088 cut-off events. For 1433/1481 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 32470 event pairs, 1268 based on Foata normal form. 48/3295 useless extension candidates. Maximal degree in co-relation 8325. Up to 2415 conditions per place. [2024-11-20 17:32:53,319 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 67 selfloop transitions, 8 changer transitions 0/123 dead transitions. [2024-11-20 17:32:53,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 514 flow [2024-11-20 17:32:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2024-11-20 17:32:53,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6404761904761904 [2024-11-20 17:32:53,323 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 296 flow. Second operand 3 states and 269 transitions. [2024-11-20 17:32:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 514 flow [2024-11-20 17:32:53,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:53,327 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 362 flow [2024-11-20 17:32:53,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-11-20 17:32:53,329 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -7 predicate places. [2024-11-20 17:32:53,329 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 362 flow [2024-11-20 17:32:53,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-20 17:32:53,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:53,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:53,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:32:53,330 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:53,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1565901865, now seen corresponding path program 1 times [2024-11-20 17:32:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044148680] [2024-11-20 17:32:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044148680] [2024-11-20 17:32:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044148680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:32:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261493530] [2024-11-20 17:32:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:53,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:32:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:32:53,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:32:53,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:32:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:53,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 17:32:53,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:32:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:53,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:32:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261493530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:32:53,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:32:53,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-20 17:32:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225124842] [2024-11-20 17:32:53,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:32:53,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:32:53,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:32:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:32:53,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-20 17:32:53,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2024-11-20 17:32:53,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:53,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-20 17:32:53,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:53,949 INFO L124 PetriNetUnfolderBase]: 1809/4261 cut-off events. [2024-11-20 17:32:53,950 INFO L125 PetriNetUnfolderBase]: For 2380/2380 co-relation queries the response was YES. [2024-11-20 17:32:53,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9721 conditions, 4261 events. 1809/4261 cut-off events. For 2380/2380 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 33792 event pairs, 1243 based on Foata normal form. 0/3462 useless extension candidates. Maximal degree in co-relation 9315. Up to 2384 conditions per place. [2024-11-20 17:32:53,972 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 146 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2024-11-20 17:32:53,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 202 transitions, 1040 flow [2024-11-20 17:32:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:32:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:32:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2024-11-20 17:32:53,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595238095238095 [2024-11-20 17:32:53,975 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 362 flow. Second operand 6 states and 554 transitions. [2024-11-20 17:32:53,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 202 transitions, 1040 flow [2024-11-20 17:32:53,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 202 transitions, 984 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-20 17:32:53,985 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 374 flow [2024-11-20 17:32:53,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2024-11-20 17:32:53,986 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2024-11-20 17:32:53,987 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 374 flow [2024-11-20 17:32:53,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2024-11-20 17:32:53,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:53,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:53,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 17:32:54,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 17:32:54,188 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:54,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:54,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1155197353, now seen corresponding path program 1 times [2024-11-20 17:32:54,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:54,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248895156] [2024-11-20 17:32:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248895156] [2024-11-20 17:32:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248895156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:54,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:32:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299432364] [2024-11-20 17:32:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:54,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:32:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:32:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:32:54,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 140 [2024-11-20 17:32:54,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-20 17:32:54,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:54,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 140 [2024-11-20 17:32:54,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:54,693 INFO L124 PetriNetUnfolderBase]: 2910/6226 cut-off events. [2024-11-20 17:32:54,693 INFO L125 PetriNetUnfolderBase]: For 3152/3236 co-relation queries the response was YES. [2024-11-20 17:32:54,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14411 conditions, 6226 events. 2910/6226 cut-off events. For 3152/3236 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 49284 event pairs, 1248 based on Foata normal form. 86/5208 useless extension candidates. Maximal degree in co-relation 14147. Up to 2888 conditions per place. [2024-11-20 17:32:54,740 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 91 selfloop transitions, 3 changer transitions 2/131 dead transitions. [2024-11-20 17:32:54,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 668 flow [2024-11-20 17:32:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-20 17:32:54,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-20 17:32:54,745 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 374 flow. Second operand 3 states and 259 transitions. [2024-11-20 17:32:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 668 flow [2024-11-20 17:32:54,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 641 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:54,758 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 323 flow [2024-11-20 17:32:54,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-20 17:32:54,759 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -11 predicate places. [2024-11-20 17:32:54,759 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 323 flow [2024-11-20 17:32:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-20 17:32:54,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:54,760 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:54,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:32:54,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:54,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2095751187, now seen corresponding path program 2 times [2024-11-20 17:32:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056426351] [2024-11-20 17:32:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 17:32:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056426351] [2024-11-20 17:32:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056426351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:32:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429788018] [2024-11-20 17:32:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:54,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:32:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:32:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:32:54,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-20 17:32:54,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:54,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:54,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-20 17:32:54,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:55,194 INFO L124 PetriNetUnfolderBase]: 1692/3388 cut-off events. [2024-11-20 17:32:55,195 INFO L125 PetriNetUnfolderBase]: For 2131/2131 co-relation queries the response was YES. [2024-11-20 17:32:55,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8687 conditions, 3388 events. 1692/3388 cut-off events. For 2131/2131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 23359 event pairs, 517 based on Foata normal form. 48/3042 useless extension candidates. Maximal degree in co-relation 8497. Up to 1634 conditions per place. [2024-11-20 17:32:55,214 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 84 selfloop transitions, 4 changer transitions 10/128 dead transitions. [2024-11-20 17:32:55,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 620 flow [2024-11-20 17:32:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:32:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:32:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-20 17:32:55,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-11-20 17:32:55,216 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 323 flow. Second operand 4 states and 358 transitions. [2024-11-20 17:32:55,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 620 flow [2024-11-20 17:32:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 602 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 17:32:55,225 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 232 flow [2024-11-20 17:32:55,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-11-20 17:32:55,226 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -21 predicate places. [2024-11-20 17:32:55,226 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 232 flow [2024-11-20 17:32:55,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:55,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:55,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:55,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 17:32:55,227 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:55,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 999774585, now seen corresponding path program 1 times [2024-11-20 17:32:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:55,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211588314] [2024-11-20 17:32:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:55,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:55,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211588314] [2024-11-20 17:32:55,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211588314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:55,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:55,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:32:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583229343] [2024-11-20 17:32:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:55,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:32:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:32:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:32:55,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-20 17:32:55,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:55,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:55,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-20 17:32:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:55,789 INFO L124 PetriNetUnfolderBase]: 2267/4483 cut-off events. [2024-11-20 17:32:55,789 INFO L125 PetriNetUnfolderBase]: For 2163/2300 co-relation queries the response was YES. [2024-11-20 17:32:55,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 4483 events. 2267/4483 cut-off events. For 2163/2300 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31516 event pairs, 1085 based on Foata normal form. 134/4080 useless extension candidates. Maximal degree in co-relation 8629. Up to 1964 conditions per place. [2024-11-20 17:32:55,811 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 66 selfloop transitions, 3 changer transitions 1/98 dead transitions. [2024-11-20 17:32:55,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 451 flow [2024-11-20 17:32:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-11-20 17:32:55,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-20 17:32:55,812 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 232 flow. Second operand 3 states and 263 transitions. [2024-11-20 17:32:55,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 451 flow [2024-11-20 17:32:55,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:32:55,818 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 219 flow [2024-11-20 17:32:55,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-20 17:32:55,819 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -27 predicate places. [2024-11-20 17:32:55,819 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 219 flow [2024-11-20 17:32:55,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:55,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:55,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:55,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 17:32:55,820 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:55,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1789630498, now seen corresponding path program 1 times [2024-11-20 17:32:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:55,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140793668] [2024-11-20 17:32:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:55,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:55,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140793668] [2024-11-20 17:32:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140793668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:55,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:32:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256179340] [2024-11-20 17:32:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:55,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:32:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:32:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:32:56,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-20 17:32:56,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:56,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:56,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-20 17:32:56,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:56,251 INFO L124 PetriNetUnfolderBase]: 1510/3221 cut-off events. [2024-11-20 17:32:56,252 INFO L125 PetriNetUnfolderBase]: For 2284/2358 co-relation queries the response was YES. [2024-11-20 17:32:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 3221 events. 1510/3221 cut-off events. For 2284/2358 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22120 event pairs, 1103 based on Foata normal form. 74/2865 useless extension candidates. Maximal degree in co-relation 6225. Up to 2026 conditions per place. [2024-11-20 17:32:56,263 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 38 selfloop transitions, 0 changer transitions 24/89 dead transitions. [2024-11-20 17:32:56,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 403 flow [2024-11-20 17:32:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:32:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:32:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2024-11-20 17:32:56,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-20 17:32:56,264 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 219 flow. Second operand 3 states and 255 transitions. [2024-11-20 17:32:56,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 403 flow [2024-11-20 17:32:56,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:32:56,269 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 187 flow [2024-11-20 17:32:56,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-11-20 17:32:56,269 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -27 predicate places. [2024-11-20 17:32:56,269 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 187 flow [2024-11-20 17:32:56,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-20 17:32:56,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:32:56,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:56,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:32:56,270 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-20 17:32:56,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:32:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash -220300114, now seen corresponding path program 1 times [2024-11-20 17:32:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:32:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957099022] [2024-11-20 17:32:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:32:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:32:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:32:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:32:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:32:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957099022] [2024-11-20 17:32:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957099022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:32:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:32:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:32:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709304364] [2024-11-20 17:32:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:32:56,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:32:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:32:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:32:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:32:56,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-20 17:32:56,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-11-20 17:32:56,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:32:56,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-20 17:32:56,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:32:56,553 INFO L124 PetriNetUnfolderBase]: 1701/2927 cut-off events. [2024-11-20 17:32:56,554 INFO L125 PetriNetUnfolderBase]: For 1622/1702 co-relation queries the response was YES. [2024-11-20 17:32:56,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7524 conditions, 2927 events. 1701/2927 cut-off events. For 1622/1702 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16288 event pairs, 689 based on Foata normal form. 80/2799 useless extension candidates. Maximal degree in co-relation 7512. Up to 1358 conditions per place. [2024-11-20 17:32:56,561 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2024-11-20 17:32:56,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 469 flow [2024-11-20 17:32:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:32:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:32:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-20 17:32:56,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089285714285714 [2024-11-20 17:32:56,563 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 187 flow. Second operand 4 states and 341 transitions. [2024-11-20 17:32:56,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 469 flow [2024-11-20 17:32:56,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 453 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 17:32:56,567 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-11-20 17:32:56,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-11-20 17:32:56,567 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -39 predicate places. [2024-11-20 17:32:56,568 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-11-20 17:32:56,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-11-20 17:32:56,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-11-20 17:32:56,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (18 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-11-20 17:32:56,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2024-11-20 17:32:56,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-11-20 17:32:56,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-11-20 17:32:56,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 17:32:56,575 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:32:56,583 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:32:56,583 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:32:56,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:32:56 BasicIcfg [2024-11-20 17:32:56,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:32:56,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:32:56,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:32:56,588 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:32:56,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:48" (3/4) ... [2024-11-20 17:32:56,590 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 17:32:56,592 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure monitor_thread [2024-11-20 17:32:56,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure counter_thread [2024-11-20 17:32:56,596 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-20 17:32:56,596 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-20 17:32:56,596 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-20 17:32:56,596 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 17:32:56,669 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 17:32:56,669 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 17:32:56,670 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:32:56,670 INFO L158 Benchmark]: Toolchain (without parser) took 9789.30ms. Allocated memory was 172.0MB in the beginning and 652.2MB in the end (delta: 480.2MB). Free memory was 140.3MB in the beginning and 391.4MB in the end (delta: -251.0MB). Peak memory consumption was 229.9MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,670 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:32:56,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 847.87ms. Allocated memory is still 172.0MB. Free memory was 140.0MB in the beginning and 123.6MB in the end (delta: 16.4MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.30ms. Allocated memory is still 172.0MB. Free memory was 122.6MB in the beginning and 119.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,671 INFO L158 Benchmark]: Boogie Preprocessor took 84.92ms. Allocated memory is still 172.0MB. Free memory was 119.7MB in the beginning and 115.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,671 INFO L158 Benchmark]: RCFGBuilder took 692.61ms. Allocated memory is still 172.0MB. Free memory was 115.4MB in the beginning and 71.5MB in the end (delta: 43.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,671 INFO L158 Benchmark]: TraceAbstraction took 8021.45ms. Allocated memory was 172.0MB in the beginning and 652.2MB in the end (delta: 480.2MB). Free memory was 70.3MB in the beginning and 395.6MB in the end (delta: -325.2MB). Peak memory consumption was 157.1MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,671 INFO L158 Benchmark]: Witness Printer took 81.76ms. Allocated memory is still 652.2MB. Free memory was 395.6MB in the beginning and 391.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 17:32:56,673 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 847.87ms. Allocated memory is still 172.0MB. Free memory was 140.0MB in the beginning and 123.6MB in the end (delta: 16.4MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.30ms. Allocated memory is still 172.0MB. Free memory was 122.6MB in the beginning and 119.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.92ms. Allocated memory is still 172.0MB. Free memory was 119.7MB in the beginning and 115.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 692.61ms. Allocated memory is still 172.0MB. Free memory was 115.4MB in the beginning and 71.5MB in the end (delta: 43.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8021.45ms. Allocated memory was 172.0MB in the beginning and 652.2MB in the end (delta: 480.2MB). Free memory was 70.3MB in the beginning and 395.6MB in the end (delta: -325.2MB). Peak memory consumption was 157.1MB. Max. memory is 16.1GB. * Witness Printer took 81.76ms. Allocated memory is still 652.2MB. Free memory was 395.6MB in the beginning and 391.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1835]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 27 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1015 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 660 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2183 IncrementalHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 36 mSDtfsCounter, 2183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=10, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 17:32:56,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE