./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:46:18,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:46:18,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:46:18,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:46:18,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:46:18,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:46:18,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:46:18,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:46:18,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:46:18,302 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:46:18,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:46:18,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:46:18,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:46:18,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:46:18,306 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:46:18,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:46:18,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:46:18,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:46:18,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:46:18,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:46:18,313 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:46:18,313 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:46:18,314 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:46:18,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:46:18,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:46:18,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:46:18,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:46:18,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:46:18,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:46:18,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:46:18,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:46:18,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:46:18,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:46:18,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:46:18,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:46:18,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:46:18,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:46:18,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:46:18,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:46:18,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:46:18,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:46:18,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:46:18,327 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-08 16:46:18,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:46:18,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:46:18,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:46:18,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:46:18,776 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:46:18,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i Unable to find full path for "g++" [2024-11-08 16:46:21,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:46:21,899 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:46:21,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-08 16:46:21,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/data/7b06b6ae4/2d55117a8c524d94b2552283d5e62312/FLAG11e77acdb [2024-11-08 16:46:22,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/data/7b06b6ae4/2d55117a8c524d94b2552283d5e62312 [2024-11-08 16:46:22,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:46:22,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:46:22,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:46:22,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:46:22,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:46:22,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:46:22" (1/1) ... [2024-11-08 16:46:22,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549f2dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:22, skipping insertion in model container [2024-11-08 16:46:22,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:46:22" (1/1) ... [2024-11-08 16:46:22,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:46:23,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:46:23,486 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:46:23,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:46:23,813 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:46:23,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23 WrapperNode [2024-11-08 16:46:23,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:46:23,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:46:23,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:46:23,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:46:23,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,897 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2024-11-08 16:46:23,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:46:23,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:46:23,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:46:23,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:46:23,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,965 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [1, 5, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 5, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [1, 0, 1, 1, 1, 1, 1, 1, 1]. [2024-11-08 16:46:23,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:23,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:24,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:24,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:24,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:46:24,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:46:24,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:46:24,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:46:24,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (1/1) ... [2024-11-08 16:46:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:46:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:46:24,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:46:24,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:46:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-08 16:46:24,164 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-08 16:46:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-08 16:46:24,165 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-08 16:46:24,165 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:46:24,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:46:24,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:46:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:46:24,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:46:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-08 16:46:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:46:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:46:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:46:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:46:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:46:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 16:46:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 16:46:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 16:46:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 16:46:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-08 16:46:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:46:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:46:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:46:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:46:24,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 16:46:24,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 16:46:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 16:46:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 16:46:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-08 16:46:24,179 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:46:24,892 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:46:24,897 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:46:25,458 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:46:25,458 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:46:25,636 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:46:25,637 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-08 16:46:25,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:46:25 BoogieIcfgContainer [2024-11-08 16:46:25,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:46:25,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:46:25,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:46:25,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:46:25,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:46:22" (1/3) ... [2024-11-08 16:46:25,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ee5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:46:25, skipping insertion in model container [2024-11-08 16:46:25,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:46:23" (2/3) ... [2024-11-08 16:46:25,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ee5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:46:25, skipping insertion in model container [2024-11-08 16:46:25,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:46:25" (3/3) ... [2024-11-08 16:46:25,650 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-08 16:46:25,675 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:46:25,675 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-08 16:46:25,675 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:46:25,825 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:46:25,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 142 transitions, 298 flow [2024-11-08 16:46:25,951 INFO L124 PetriNetUnfolderBase]: 40/140 cut-off events. [2024-11-08 16:46:25,952 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:46:25,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 140 events. 40/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 402 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 107. Up to 5 conditions per place. [2024-11-08 16:46:25,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 142 transitions, 298 flow [2024-11-08 16:46:25,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 139 transitions, 290 flow [2024-11-08 16:46:25,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:46:25,991 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;@25a9d7fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:46:25,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-08 16:46:25,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:46:25,996 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-08 16:46:25,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:46:25,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:25,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 16:46:25,998 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)] === [2024-11-08 16:46:26,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 578271, now seen corresponding path program 1 times [2024-11-08 16:46:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:26,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638208801] [2024-11-08 16:46:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638208801] [2024-11-08 16:46:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638208801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:26,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:46:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74550936] [2024-11-08 16:46:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:26,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:26,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 142 [2024-11-08 16:46:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 142 [2024-11-08 16:46:26,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:27,622 INFO L124 PetriNetUnfolderBase]: 1009/2883 cut-off events. [2024-11-08 16:46:27,623 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-08 16:46:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 2883 events. 1009/2883 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 24641 event pairs, 359 based on Foata normal form. 989/3017 useless extension candidates. Maximal degree in co-relation 4261. Up to 834 conditions per place. [2024-11-08 16:46:27,660 INFO L140 encePairwiseOnDemand]: 114/142 looper letters, 62 selfloop transitions, 9 changer transitions 5/137 dead transitions. [2024-11-08 16:46:27,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 137 transitions, 436 flow [2024-11-08 16:46:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2024-11-08 16:46:27,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7816901408450704 [2024-11-08 16:46:27,685 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 290 flow. Second operand 3 states and 333 transitions. [2024-11-08 16:46:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 137 transitions, 436 flow [2024-11-08 16:46:27,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:46:27,701 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 257 flow [2024-11-08 16:46:27,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-11-08 16:46:27,713 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-11-08 16:46:27,713 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 257 flow [2024-11-08 16:46:27,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:27,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:27,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:27,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:46:27,715 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)] === [2024-11-08 16:46:27,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash -198794696, now seen corresponding path program 1 times [2024-11-08 16:46:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033914077] [2024-11-08 16:46:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033914077] [2024-11-08 16:46:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033914077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314906242] [2024-11-08 16:46:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:27,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:28,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:28,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:28,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:28,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:28,655 INFO L124 PetriNetUnfolderBase]: 1110/2689 cut-off events. [2024-11-08 16:46:28,655 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2024-11-08 16:46:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4908 conditions, 2689 events. 1110/2689 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20793 event pairs, 779 based on Foata normal form. 0/2091 useless extension candidates. Maximal degree in co-relation 1915. Up to 1541 conditions per place. [2024-11-08 16:46:28,688 INFO L140 encePairwiseOnDemand]: 140/142 looper letters, 57 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-08 16:46:28,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 401 flow [2024-11-08 16:46:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2024-11-08 16:46:28,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6384976525821596 [2024-11-08 16:46:28,695 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 257 flow. Second operand 3 states and 272 transitions. [2024-11-08 16:46:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 401 flow [2024-11-08 16:46:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:28,706 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 250 flow [2024-11-08 16:46:28,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2024-11-08 16:46:28,710 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2024-11-08 16:46:28,710 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 250 flow [2024-11-08 16:46:28,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:28,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:28,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:28,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:46:28,713 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)] === [2024-11-08 16:46:28,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash -198794695, now seen corresponding path program 1 times [2024-11-08 16:46:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269960801] [2024-11-08 16:46:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269960801] [2024-11-08 16:46:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269960801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:29,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285990495] [2024-11-08 16:46:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:29,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:29,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:29,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:29,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:29,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:29,685 INFO L124 PetriNetUnfolderBase]: 1108/2689 cut-off events. [2024-11-08 16:46:29,685 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-08 16:46:29,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2689 events. 1108/2689 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20881 event pairs, 777 based on Foata normal form. 0/2085 useless extension candidates. Maximal degree in co-relation 4522. Up to 1547 conditions per place. [2024-11-08 16:46:29,713 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 54 selfloop transitions, 5 changer transitions 2/118 dead transitions. [2024-11-08 16:46:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 402 flow [2024-11-08 16:46:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2024-11-08 16:46:29,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6431924882629108 [2024-11-08 16:46:29,718 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 250 flow. Second operand 3 states and 274 transitions. [2024-11-08 16:46:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 402 flow [2024-11-08 16:46:29,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 118 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:29,728 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 286 flow [2024-11-08 16:46:29,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-11-08 16:46:29,731 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-11-08 16:46:29,732 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 286 flow [2024-11-08 16:46:29,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:29,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:29,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:29,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:46:29,734 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)] === [2024-11-08 16:46:29,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 786429261, now seen corresponding path program 1 times [2024-11-08 16:46:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867716975] [2024-11-08 16:46:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:29,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867716975] [2024-11-08 16:46:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867716975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:29,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:29,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:46:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116259843] [2024-11-08 16:46:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:29,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:46:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:46:29,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:46:29,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:29,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:30,825 INFO L124 PetriNetUnfolderBase]: 1510/3299 cut-off events. [2024-11-08 16:46:30,826 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-11-08 16:46:30,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 3299 events. 1510/3299 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 24078 event pairs, 540 based on Foata normal form. 0/2703 useless extension candidates. Maximal degree in co-relation 5961. Up to 1036 conditions per place. [2024-11-08 16:46:30,859 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 118 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2024-11-08 16:46:30,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 176 transitions, 726 flow [2024-11-08 16:46:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:46:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:46:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2024-11-08 16:46:30,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6591549295774648 [2024-11-08 16:46:30,862 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 286 flow. Second operand 5 states and 468 transitions. [2024-11-08 16:46:30,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 176 transitions, 726 flow [2024-11-08 16:46:30,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 176 transitions, 710 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 16:46:30,872 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 262 flow [2024-11-08 16:46:30,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2024-11-08 16:46:30,873 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -14 predicate places. [2024-11-08 16:46:30,877 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 262 flow [2024-11-08 16:46:30,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:30,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:30,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:30,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:46:30,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:30,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1521024442, now seen corresponding path program 1 times [2024-11-08 16:46:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40471294] [2024-11-08 16:46:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:31,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40471294] [2024-11-08 16:46:31,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40471294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:31,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:31,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:31,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112478224] [2024-11-08 16:46:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:31,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:31,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:31,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:31,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:31,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:31,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:32,073 INFO L124 PetriNetUnfolderBase]: 2408/5099 cut-off events. [2024-11-08 16:46:32,074 INFO L125 PetriNetUnfolderBase]: For 810/831 co-relation queries the response was YES. [2024-11-08 16:46:32,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 5099 events. 2408/5099 cut-off events. For 810/831 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 40189 event pairs, 1193 based on Foata normal form. 20/4259 useless extension candidates. Maximal degree in co-relation 9300. Up to 2328 conditions per place. [2024-11-08 16:46:32,128 INFO L140 encePairwiseOnDemand]: 136/142 looper letters, 70 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-11-08 16:46:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 128 transitions, 486 flow [2024-11-08 16:46:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-11-08 16:46:32,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6690140845070423 [2024-11-08 16:46:32,131 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 262 flow. Second operand 3 states and 285 transitions. [2024-11-08 16:46:32,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 128 transitions, 486 flow [2024-11-08 16:46:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:32,148 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 308 flow [2024-11-08 16:46:32,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-11-08 16:46:32,149 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2024-11-08 16:46:32,151 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 308 flow [2024-11-08 16:46:32,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:32,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:32,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:32,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:46:32,153 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:32,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:32,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1521024443, now seen corresponding path program 1 times [2024-11-08 16:46:32,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:32,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994636059] [2024-11-08 16:46:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:32,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:32,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994636059] [2024-11-08 16:46:32,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994636059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:32,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:32,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012318345] [2024-11-08 16:46:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:32,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:32,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:32,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:32,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:32,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:32,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:33,122 INFO L124 PetriNetUnfolderBase]: 2364/5041 cut-off events. [2024-11-08 16:46:33,123 INFO L125 PetriNetUnfolderBase]: For 1943/1985 co-relation queries the response was YES. [2024-11-08 16:46:33,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10548 conditions, 5041 events. 2364/5041 cut-off events. For 1943/1985 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 39930 event pairs, 1113 based on Foata normal form. 306/4424 useless extension candidates. Maximal degree in co-relation 9915. Up to 2087 conditions per place. [2024-11-08 16:46:33,168 INFO L140 encePairwiseOnDemand]: 140/142 looper letters, 76 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2024-11-08 16:46:33,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 534 flow [2024-11-08 16:46:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2024-11-08 16:46:33,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6643192488262911 [2024-11-08 16:46:33,171 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 308 flow. Second operand 3 states and 283 transitions. [2024-11-08 16:46:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 534 flow [2024-11-08 16:46:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 514 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-08 16:46:33,208 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 290 flow [2024-11-08 16:46:33,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-08 16:46:33,211 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2024-11-08 16:46:33,211 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 290 flow [2024-11-08 16:46:33,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:33,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:33,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:33,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:46:33,214 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)] === [2024-11-08 16:46:33,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 951963082, now seen corresponding path program 1 times [2024-11-08 16:46:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51271585] [2024-11-08 16:46:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51271585] [2024-11-08 16:46:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51271585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:46:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474825556] [2024-11-08 16:46:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:33,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:33,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:33,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:33,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:33,963 INFO L124 PetriNetUnfolderBase]: 1620/3888 cut-off events. [2024-11-08 16:46:33,964 INFO L125 PetriNetUnfolderBase]: For 1816/1816 co-relation queries the response was YES. [2024-11-08 16:46:33,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7816 conditions, 3888 events. 1620/3888 cut-off events. For 1816/1816 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30711 event pairs, 1222 based on Foata normal form. 47/3119 useless extension candidates. Maximal degree in co-relation 7552. Up to 2376 conditions per place. [2024-11-08 16:46:34,044 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 73 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-08 16:46:34,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 127 transitions, 512 flow [2024-11-08 16:46:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2024-11-08 16:46:34,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6596244131455399 [2024-11-08 16:46:34,048 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 290 flow. Second operand 3 states and 281 transitions. [2024-11-08 16:46:34,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 127 transitions, 512 flow [2024-11-08 16:46:34,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 127 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:34,062 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 302 flow [2024-11-08 16:46:34,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-11-08 16:46:34,064 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-11-08 16:46:34,065 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 302 flow [2024-11-08 16:46:34,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:34,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:34,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:34,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:46:34,067 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:34,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:34,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1986017214, now seen corresponding path program 1 times [2024-11-08 16:46:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:34,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828856158] [2024-11-08 16:46:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:34,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:34,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:34,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828856158] [2024-11-08 16:46:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828856158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:34,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296601057] [2024-11-08 16:46:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:34,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:34,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:34,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:34,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:34,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:35,123 INFO L124 PetriNetUnfolderBase]: 1667/3964 cut-off events. [2024-11-08 16:46:35,124 INFO L125 PetriNetUnfolderBase]: For 1314/1407 co-relation queries the response was YES. [2024-11-08 16:46:35,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 3964 events. 1667/3964 cut-off events. For 1314/1407 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31464 event pairs, 1181 based on Foata normal form. 44/3256 useless extension candidates. Maximal degree in co-relation 7967. Up to 2273 conditions per place. [2024-11-08 16:46:35,156 INFO L140 encePairwiseOnDemand]: 136/142 looper letters, 65 selfloop transitions, 8 changer transitions 0/125 dead transitions. [2024-11-08 16:46:35,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 125 transitions, 515 flow [2024-11-08 16:46:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-08 16:46:35,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.647887323943662 [2024-11-08 16:46:35,159 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 302 flow. Second operand 3 states and 276 transitions. [2024-11-08 16:46:35,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 125 transitions, 515 flow [2024-11-08 16:46:35,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:35,177 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 369 flow [2024-11-08 16:46:35,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2024-11-08 16:46:35,178 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -7 predicate places. [2024-11-08 16:46:35,180 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 369 flow [2024-11-08 16:46:35,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:35,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:35,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:35,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:46:35,182 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:35,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1986017215, now seen corresponding path program 1 times [2024-11-08 16:46:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032819760] [2024-11-08 16:46:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032819760] [2024-11-08 16:46:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032819760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:35,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:46:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71490720] [2024-11-08 16:46:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:35,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:35,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 142 [2024-11-08 16:46:35,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:35,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:35,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 142 [2024-11-08 16:46:35,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:36,069 INFO L124 PetriNetUnfolderBase]: 1648/3932 cut-off events. [2024-11-08 16:46:36,070 INFO L125 PetriNetUnfolderBase]: For 1899/1996 co-relation queries the response was YES. [2024-11-08 16:46:36,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8684 conditions, 3932 events. 1648/3932 cut-off events. For 1899/1996 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31366 event pairs, 1150 based on Foata normal form. 141/3335 useless extension candidates. Maximal degree in co-relation 8293. Up to 2155 conditions per place. [2024-11-08 16:46:36,108 INFO L140 encePairwiseOnDemand]: 140/142 looper letters, 71 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-11-08 16:46:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 571 flow [2024-11-08 16:46:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2024-11-08 16:46:36,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6431924882629108 [2024-11-08 16:46:36,111 INFO L175 Difference]: Start difference. First operand has 99 places, 110 transitions, 369 flow. Second operand 3 states and 274 transitions. [2024-11-08 16:46:36,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 571 flow [2024-11-08 16:46:36,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 547 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-08 16:46:36,127 INFO L231 Difference]: Finished difference. Result has 98 places, 109 transitions, 349 flow [2024-11-08 16:46:36,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=98, PETRI_TRANSITIONS=109} [2024-11-08 16:46:36,128 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2024-11-08 16:46:36,130 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 109 transitions, 349 flow [2024-11-08 16:46:36,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:36,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:36,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:36,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:46:36,131 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:36,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1650188608, now seen corresponding path program 1 times [2024-11-08 16:46:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:36,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589410991] [2024-11-08 16:46:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:36,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589410991] [2024-11-08 16:46:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589410991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:46:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236429606] [2024-11-08 16:46:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:36,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:46:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:46:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:46:36,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 142 [2024-11-08 16:46:36,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 109 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:36,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:36,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 142 [2024-11-08 16:46:36,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:37,016 INFO L124 PetriNetUnfolderBase]: 2416/5396 cut-off events. [2024-11-08 16:46:37,017 INFO L125 PetriNetUnfolderBase]: For 2112/2195 co-relation queries the response was YES. [2024-11-08 16:46:37,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11428 conditions, 5396 events. 2416/5396 cut-off events. For 2112/2195 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 43474 event pairs, 1012 based on Foata normal form. 42/4441 useless extension candidates. Maximal degree in co-relation 11204. Up to 2360 conditions per place. [2024-11-08 16:46:37,070 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 83 selfloop transitions, 3 changer transitions 2/126 dead transitions. [2024-11-08 16:46:37,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 126 transitions, 593 flow [2024-11-08 16:46:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2024-11-08 16:46:37,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6244131455399061 [2024-11-08 16:46:37,073 INFO L175 Difference]: Start difference. First operand has 98 places, 109 transitions, 349 flow. Second operand 3 states and 266 transitions. [2024-11-08 16:46:37,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 126 transitions, 593 flow [2024-11-08 16:46:37,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:37,105 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 309 flow [2024-11-08 16:46:37,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-11-08 16:46:37,108 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -18 predicate places. [2024-11-08 16:46:37,109 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 309 flow [2024-11-08 16:46:37,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:37,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:37,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:37,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:46:37,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:37,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash 338417891, now seen corresponding path program 1 times [2024-11-08 16:46:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532182824] [2024-11-08 16:46:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532182824] [2024-11-08 16:46:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532182824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:46:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261481402] [2024-11-08 16:46:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:37,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:46:37,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:46:37,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:46:37,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:46:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:37,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:46:37,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:46:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:37,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:46:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261481402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:46:37,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:46:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 16:46:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394821149] [2024-11-08 16:46:37,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:46:37,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:46:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:46:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:46:37,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:37,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:37,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:37,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:37,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:38,674 INFO L124 PetriNetUnfolderBase]: 2037/4389 cut-off events. [2024-11-08 16:46:38,674 INFO L125 PetriNetUnfolderBase]: For 2300/2300 co-relation queries the response was YES. [2024-11-08 16:46:38,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10560 conditions, 4389 events. 2037/4389 cut-off events. For 2300/2300 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 32884 event pairs, 1223 based on Foata normal form. 144/3912 useless extension candidates. Maximal degree in co-relation 10274. Up to 2278 conditions per place. [2024-11-08 16:46:38,726 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 144 selfloop transitions, 6 changer transitions 0/190 dead transitions. [2024-11-08 16:46:38,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 190 transitions, 961 flow [2024-11-08 16:46:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:46:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:46:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2024-11-08 16:46:38,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6549295774647887 [2024-11-08 16:46:38,730 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 309 flow. Second operand 6 states and 558 transitions. [2024-11-08 16:46:38,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 190 transitions, 961 flow [2024-11-08 16:46:38,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 190 transitions, 947 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:46:38,748 INFO L231 Difference]: Finished difference. Result has 93 places, 95 transitions, 339 flow [2024-11-08 16:46:38,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2024-11-08 16:46:38,749 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2024-11-08 16:46:38,749 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 339 flow [2024-11-08 16:46:38,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:38,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:38,751 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] [2024-11-08 16:46:38,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:46:38,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:46:38,952 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:38,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1440141386, now seen corresponding path program 1 times [2024-11-08 16:46:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704677020] [2024-11-08 16:46:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:38,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:39,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704677020] [2024-11-08 16:46:39,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704677020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:39,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:39,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:46:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633608557] [2024-11-08 16:46:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:39,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:46:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:46:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:46:39,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:39,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:39,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:39,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:39,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:40,476 INFO L124 PetriNetUnfolderBase]: 2604/5461 cut-off events. [2024-11-08 16:46:40,477 INFO L125 PetriNetUnfolderBase]: For 3428/3555 co-relation queries the response was YES. [2024-11-08 16:46:40,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12787 conditions, 5461 events. 2604/5461 cut-off events. For 3428/3555 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 41897 event pairs, 1300 based on Foata normal form. 52/4691 useless extension candidates. Maximal degree in co-relation 12513. Up to 2304 conditions per place. [2024-11-08 16:46:40,538 INFO L140 encePairwiseOnDemand]: 140/142 looper letters, 81 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-11-08 16:46:40,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 615 flow [2024-11-08 16:46:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-11-08 16:46:40,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6502347417840375 [2024-11-08 16:46:40,541 INFO L175 Difference]: Start difference. First operand has 93 places, 95 transitions, 339 flow. Second operand 3 states and 277 transitions. [2024-11-08 16:46:40,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 615 flow [2024-11-08 16:46:40,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 600 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:40,562 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 333 flow [2024-11-08 16:46:40,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2024-11-08 16:46:40,563 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2024-11-08 16:46:40,564 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 333 flow [2024-11-08 16:46:40,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:40,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:40,565 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] [2024-11-08 16:46:40,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:46:40,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:40,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash -69500388, now seen corresponding path program 1 times [2024-11-08 16:46:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507675011] [2024-11-08 16:46:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507675011] [2024-11-08 16:46:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507675011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:46:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091149530] [2024-11-08 16:46:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:40,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:46:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:46:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:46:41,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:41,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:41,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:41,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:41,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:41,829 INFO L124 PetriNetUnfolderBase]: 1791/4125 cut-off events. [2024-11-08 16:46:41,829 INFO L125 PetriNetUnfolderBase]: For 3066/3117 co-relation queries the response was YES. [2024-11-08 16:46:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9812 conditions, 4125 events. 1791/4125 cut-off events. For 3066/3117 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 31938 event pairs, 1324 based on Foata normal form. 0/3477 useless extension candidates. Maximal degree in co-relation 9553. Up to 2397 conditions per place. [2024-11-08 16:46:41,872 INFO L140 encePairwiseOnDemand]: 140/142 looper letters, 67 selfloop transitions, 3 changer transitions 3/112 dead transitions. [2024-11-08 16:46:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 112 transitions, 549 flow [2024-11-08 16:46:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:46:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:46:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-08 16:46:41,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6267605633802817 [2024-11-08 16:46:41,875 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 333 flow. Second operand 3 states and 267 transitions. [2024-11-08 16:46:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 112 transitions, 549 flow [2024-11-08 16:46:41,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:41,894 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 332 flow [2024-11-08 16:46:41,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-11-08 16:46:41,896 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2024-11-08 16:46:41,896 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 332 flow [2024-11-08 16:46:41,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:41,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:41,897 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] [2024-11-08 16:46:41,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:46:41,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:41,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1206486632, now seen corresponding path program 1 times [2024-11-08 16:46:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015799899] [2024-11-08 16:46:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:46:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015799899] [2024-11-08 16:46:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015799899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:42,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:46:42,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371922101] [2024-11-08 16:46:42,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:42,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:46:42,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:46:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:46:42,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:42,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:42,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:42,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:42,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:42,871 INFO L124 PetriNetUnfolderBase]: 2272/4477 cut-off events. [2024-11-08 16:46:42,872 INFO L125 PetriNetUnfolderBase]: For 2984/3044 co-relation queries the response was YES. [2024-11-08 16:46:42,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11455 conditions, 4477 events. 2272/4477 cut-off events. For 2984/3044 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 31761 event pairs, 1044 based on Foata normal form. 0/3909 useless extension candidates. Maximal degree in co-relation 11245. Up to 2012 conditions per place. [2024-11-08 16:46:42,912 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 85 selfloop transitions, 4 changer transitions 11/131 dead transitions. [2024-11-08 16:46:42,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 674 flow [2024-11-08 16:46:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:46:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:46:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2024-11-08 16:46:42,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320422535211268 [2024-11-08 16:46:42,916 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 332 flow. Second operand 4 states and 359 transitions. [2024-11-08 16:46:42,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 674 flow [2024-11-08 16:46:42,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 131 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:46:42,932 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 298 flow [2024-11-08 16:46:42,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-11-08 16:46:42,935 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -16 predicate places. [2024-11-08 16:46:42,935 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 298 flow [2024-11-08 16:46:42,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:42,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:46:42,936 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:42,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:46:42,936 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-08 16:46:42,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:46:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash -49681234, now seen corresponding path program 2 times [2024-11-08 16:46:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:46:42,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102897006] [2024-11-08 16:46:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:46:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:46:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:46:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:46:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:46:43,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102897006] [2024-11-08 16:46:43,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102897006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:46:43,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:46:43,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:46:43,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506397011] [2024-11-08 16:46:43,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:46:43,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:46:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:46:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:46:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:46:43,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2024-11-08 16:46:43,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:43,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:46:43,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2024-11-08 16:46:43,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:46:43,742 INFO L124 PetriNetUnfolderBase]: 1657/3277 cut-off events. [2024-11-08 16:46:43,743 INFO L125 PetriNetUnfolderBase]: For 2233/2233 co-relation queries the response was YES. [2024-11-08 16:46:43,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 3277 events. 1657/3277 cut-off events. For 2233/2233 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21065 event pairs, 471 based on Foata normal form. 58/3170 useless extension candidates. Maximal degree in co-relation 9053. Up to 1520 conditions per place. [2024-11-08 16:46:43,768 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2024-11-08 16:46:43,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 561 flow [2024-11-08 16:46:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:46:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:46:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-11-08 16:46:43,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6338028169014085 [2024-11-08 16:46:43,771 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 298 flow. Second operand 4 states and 360 transitions. [2024-11-08 16:46:43,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 561 flow [2024-11-08 16:46:43,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 533 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-08 16:46:43,794 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-11-08 16:46:43,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-11-08 16:46:43,795 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -30 predicate places. [2024-11-08 16:46:43,795 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-11-08 16:46:43,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:46:43,799 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-11-08 16:46:43,800 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-11-08 16:46:43,800 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-11-08 16:46:43,800 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-11-08 16:46:43,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-11-08 16:46:43,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-11-08 16:46:43,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-11-08 16:46:43,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-11-08 16:46:43,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (18 of 27 remaining) [2024-11-08 16:46:43,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-11-08 16:46:43,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-11-08 16:46:43,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-11-08 16:46:43,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-11-08 16:46:43,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-11-08 16:46:43,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2024-11-08 16:46:43,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2024-11-08 16:46:43,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2024-11-08 16:46:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-11-08 16:46:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-11-08 16:46:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-11-08 16:46:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-11-08 16:46:43,805 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-11-08 16:46:43,805 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-11-08 16:46:43,805 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-11-08 16:46:43,805 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-11-08 16:46:43,806 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-11-08 16:46:43,806 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-11-08 16:46:43,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:46:43,807 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:46:43,815 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 16:46:43,815 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:46:43,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:46:43 BasicIcfg [2024-11-08 16:46:43,824 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:46:43,824 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:46:43,825 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:46:43,825 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:46:43,826 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:46:25" (3/4) ... [2024-11-08 16:46:43,828 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 16:46:43,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure monitor_thread [2024-11-08 16:46:43,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure counter_thread [2024-11-08 16:46:43,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-08 16:46:43,842 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-08 16:46:43,842 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-08 16:46:43,842 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 16:46:43,967 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 16:46:43,968 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 16:46:43,968 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:46:43,969 INFO L158 Benchmark]: Toolchain (without parser) took 21930.78ms. Allocated memory was 178.3MB in the beginning and 505.4MB in the end (delta: 327.2MB). Free memory was 142.8MB in the beginning and 206.6MB in the end (delta: -63.8MB). Peak memory consumption was 263.1MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,969 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:46:43,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1773.38ms. Allocated memory is still 178.3MB. Free memory was 142.8MB in the beginning and 94.1MB in the end (delta: 48.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.54ms. Allocated memory is still 178.3MB. Free memory was 94.1MB in the beginning and 91.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,971 INFO L158 Benchmark]: Boogie Preprocessor took 137.15ms. Allocated memory is still 178.3MB. Free memory was 91.2MB in the beginning and 87.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,972 INFO L158 Benchmark]: RCFGBuilder took 1596.99ms. Allocated memory is still 178.3MB. Free memory was 86.5MB in the beginning and 106.6MB in the end (delta: -20.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,972 INFO L158 Benchmark]: TraceAbstraction took 18183.20ms. Allocated memory was 178.3MB in the beginning and 505.4MB in the end (delta: 327.2MB). Free memory was 106.6MB in the beginning and 210.8MB in the end (delta: -104.3MB). Peak memory consumption was 222.9MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,972 INFO L158 Benchmark]: Witness Printer took 143.68ms. Allocated memory is still 505.4MB. Free memory was 210.8MB in the beginning and 206.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:46:43,976 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1773.38ms. Allocated memory is still 178.3MB. Free memory was 142.8MB in the beginning and 94.1MB in the end (delta: 48.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.54ms. Allocated memory is still 178.3MB. Free memory was 94.1MB in the beginning and 91.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 137.15ms. Allocated memory is still 178.3MB. Free memory was 91.2MB in the beginning and 87.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1596.99ms. Allocated memory is still 178.3MB. Free memory was 86.5MB in the beginning and 106.6MB in the end (delta: -20.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18183.20ms. Allocated memory was 178.3MB in the beginning and 505.4MB in the end (delta: 327.2MB). Free memory was 106.6MB in the beginning and 210.8MB in the end (delta: -104.3MB). Peak memory consumption was 222.9MB. Max. memory is 16.1GB. * Witness Printer took 143.68ms. Allocated memory is still 505.4MB. Free memory was 210.8MB in the beginning and 206.6MB 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, 161 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: 17.9s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1040 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 682 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2150 IncrementalHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 76 mSDtfsCounter, 2150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=369occurred in iteration=8, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 16/19 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! [2024-11-08 16:46:44,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cff25a-87d5-468f-a9a2-f462d966dd21/bin/uautomizer-verify-jihMAELWvX/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