./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:36,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:36,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:09:36,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:36,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:36,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:36,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:36,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:36,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:36,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:36,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:36,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:36,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:36,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:36,412 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:36,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:36,412 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:36,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:36,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:36,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:36,413 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:36,413 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:36,414 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:36,415 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:36,415 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:36,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:36,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:36,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:36,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:36,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:36,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:36,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:36,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:36,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:36,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:36,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:36,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:36,418 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-11-28 05:09:36,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:36,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:36,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:36,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:36,888 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:36,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/lazy01.i [2024-11-28 05:09:40,623 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/23eb57708/229b8b8afc0a4d6a88a3b76b01583c59/FLAG4063d86ac [2024-11-28 05:09:40,975 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:40,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/sv-benchmarks/c/pthread/lazy01.i [2024-11-28 05:09:40,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/23eb57708/229b8b8afc0a4d6a88a3b76b01583c59/FLAG4063d86ac [2024-11-28 05:09:41,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/23eb57708/229b8b8afc0a4d6a88a3b76b01583c59 [2024-11-28 05:09:41,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:41,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:41,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:41,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:41,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:41,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edfb0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41, skipping insertion in model container [2024-11-28 05:09:41,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:41,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:41,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:09:41,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:41,706 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:09:41,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41 WrapperNode [2024-11-28 05:09:41,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:41,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:41,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:09:41,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:09:41,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,770 INFO L138 Inliner]: procedures = 169, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-28 05:09:41,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:41,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:09:41,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:09:41,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:09:41,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,820 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-28 05:09:41,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,833 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:09:41,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:09:41,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:09:41,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:09:41,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:41,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:41,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:09:41,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:09:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:09:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:09:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:09:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:09:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:09:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:09:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:09:41,950 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:09:42,130 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:09:42,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:09:42,450 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:09:42,450 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:09:42,636 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:09:42,636 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:09:42,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:42 BoogieIcfgContainer [2024-11-28 05:09:42,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:09:42,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:09:42,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:09:42,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:09:42,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:09:41" (1/3) ... [2024-11-28 05:09:42,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dac2a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:42, skipping insertion in model container [2024-11-28 05:09:42,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41" (2/3) ... [2024-11-28 05:09:42,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dac2a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:42, skipping insertion in model container [2024-11-28 05:09:42,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:42" (3/3) ... [2024-11-28 05:09:42,663 INFO L128 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-11-28 05:09:42,687 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:09:42,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-28 05:09:42,690 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:09:42,783 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:09:42,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-11-28 05:09:42,914 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-11-28 05:09:42,917 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:09:42,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-28 05:09:42,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-11-28 05:09:42,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-11-28 05:09:42,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:09:42,975 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;@35ac9d16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:09:42,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:09:43,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:09:43,008 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-28 05:09:43,009 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:09:43,009 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:43,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:43,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:43,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1771620510, now seen corresponding path program 1 times [2024-11-28 05:09:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:43,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268974442] [2024-11-28 05:09:43,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:43,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268974442] [2024-11-28 05:09:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268974442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:09:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415430892] [2024-11-28 05:09:43,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:43,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:43,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:43,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:43,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-28 05:09:43,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:43,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:43,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:44,023 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-11-28 05:09:44,023 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-28 05:09:44,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5388 event pairs, 178 based on Foata normal form. 95/1096 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2024-11-28 05:09:44,037 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-28 05:09:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2024-11-28 05:09:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-28 05:09:44,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-11-28 05:09:44,056 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2024-11-28 05:09:44,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2024-11-28 05:09:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:09:44,073 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-11-28 05:09:44,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-28 05:09:44,083 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-11-28 05:09:44,083 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-11-28 05:09:44,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-28 05:09:44,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:44,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:44,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:09:44,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:44,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -895038378, now seen corresponding path program 1 times [2024-11-28 05:09:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137238762] [2024-11-28 05:09:44,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:44,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137238762] [2024-11-28 05:09:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137238762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:44,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:44,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074799765] [2024-11-28 05:09:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:44,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:44,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:44,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:44,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:44,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-28 05:09:44,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:44,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:44,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:44,626 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-11-28 05:09:44,626 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-28 05:09:44,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3032 event pairs, 108 based on Foata normal form. 80/709 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2024-11-28 05:09:44,636 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-11-28 05:09:44,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2024-11-28 05:09:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-28 05:09:44,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-28 05:09:44,638 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2024-11-28 05:09:44,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2024-11-28 05:09:44,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:44,644 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-11-28 05:09:44,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-28 05:09:44,645 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-11-28 05:09:44,646 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-11-28 05:09:44,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-28 05:09:44,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:44,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:44,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:09:44,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:44,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1678654816, now seen corresponding path program 1 times [2024-11-28 05:09:44,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:44,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134948994] [2024-11-28 05:09:44,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134948994] [2024-11-28 05:09:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134948994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520009806] [2024-11-28 05:09:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:44,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:44,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:44,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:44,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:44,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:44,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:44,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:44,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:45,034 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-11-28 05:09:45,035 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-28 05:09:45,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2824 event pairs, 65 based on Foata normal form. 5/606 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2024-11-28 05:09:45,050 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-28 05:09:45,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2024-11-28 05:09:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-28 05:09:45,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-28 05:09:45,055 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2024-11-28 05:09:45,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2024-11-28 05:09:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:45,060 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-11-28 05:09:45,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-28 05:09:45,063 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-28 05:09:45,063 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-11-28 05:09:45,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:45,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:45,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:45,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:09:45,065 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:45,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2003875104, now seen corresponding path program 1 times [2024-11-28 05:09:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495713611] [2024-11-28 05:09:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495713611] [2024-11-28 05:09:45,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495713611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:45,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:45,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896381832] [2024-11-28 05:09:45,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:45,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:45,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:45,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:45,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-28 05:09:45,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-28 05:09:45,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:45,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-28 05:09:45,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:45,423 INFO L124 PetriNetUnfolderBase]: 341/666 cut-off events. [2024-11-28 05:09:45,423 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-11-28 05:09:45,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 666 events. 341/666 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3000 event pairs, 91 based on Foata normal form. 4/666 useless extension candidates. Maximal degree in co-relation 508. Up to 316 conditions per place. [2024-11-28 05:09:45,428 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 43 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-11-28 05:09:45,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 261 flow [2024-11-28 05:09:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-28 05:09:45,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-11-28 05:09:45,431 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 94 transitions. [2024-11-28 05:09:45,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 261 flow [2024-11-28 05:09:45,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:45,437 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2024-11-28 05:09:45,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-11-28 05:09:45,439 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-11-28 05:09:45,440 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2024-11-28 05:09:45,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-28 05:09:45,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:45,441 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:45,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:09:45,442 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:45,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1657223266, now seen corresponding path program 1 times [2024-11-28 05:09:45,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:45,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546788298] [2024-11-28 05:09:45,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:45,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:09:45,487 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:09:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:09:45,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:09:45,557 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:09:45,558 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-28 05:09:45,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-28 05:09:45,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-28 05:09:45,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-28 05:09:45,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-11-28 05:09:45,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:09:45,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:09:45,568 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 05:09:45,630 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 05:09:45,631 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 05:09:45,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:09:45 BasicIcfg [2024-11-28 05:09:45,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 05:09:45,643 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 05:09:45,644 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 05:09:45,644 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 05:09:45,645 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:42" (3/4) ... [2024-11-28 05:09:45,649 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 05:09:45,650 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 05:09:45,651 INFO L158 Benchmark]: Toolchain (without parser) took 4621.21ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 42.1MB in the end (delta: 47.5MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2024-11-28 05:09:45,652 INFO L158 Benchmark]: CDTParser took 1.92ms. Allocated memory is still 83.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:45,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.85ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 70.1MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:09:45,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.08ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 68.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:45,654 INFO L158 Benchmark]: Boogie Preprocessor took 81.92ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:45,655 INFO L158 Benchmark]: RCFGBuilder took 786.69ms. Allocated memory is still 117.4MB. Free memory was 66.6MB in the beginning and 45.5MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:09:45,655 INFO L158 Benchmark]: TraceAbstraction took 2997.43ms. Allocated memory is still 117.4MB. Free memory was 44.5MB in the beginning and 43.0MB in the end (delta: 1.5MB). Peak memory consumption was 63.1kB. Max. memory is 16.1GB. [2024-11-28 05:09:45,656 INFO L158 Benchmark]: Witness Printer took 7.58ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 42.1MB in the end (delta: 942.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:45,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.92ms. Allocated memory is still 83.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.85ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 70.1MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.08ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 68.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 81.92ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 786.69ms. Allocated memory is still 117.4MB. Free memory was 66.6MB in the beginning and 45.5MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2997.43ms. Allocated memory is still 117.4MB. Free memory was 44.5MB in the beginning and 43.0MB in the end (delta: 1.5MB). Peak memory consumption was 63.1kB. Max. memory is 16.1GB. * Witness Printer took 7.58ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 42.1MB in the end (delta: 942.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-1] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0, t3=1] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 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: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 05:09:45,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:49,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:49,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 05:09:49,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:49,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:49,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:49,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:49,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:49,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:49,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:49,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:49,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:49,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:49,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:49,417 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:49,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:49,418 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:49,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:49,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:49,424 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:49,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:49,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:49,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:49,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:49,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:49,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:49,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:49,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:49,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:49,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:49,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:49,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-11-28 05:09:49,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:49,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:49,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:49,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:49,897 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:49,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/lazy01.i [2024-11-28 05:09:53,718 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/163f1149b/b8eb037e181d4b2e90679aee316697c4/FLAGf6f56cfe2 [2024-11-28 05:09:54,160 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:54,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/sv-benchmarks/c/pthread/lazy01.i [2024-11-28 05:09:54,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/163f1149b/b8eb037e181d4b2e90679aee316697c4/FLAGf6f56cfe2 [2024-11-28 05:09:54,223 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/data/163f1149b/b8eb037e181d4b2e90679aee316697c4 [2024-11-28 05:09:54,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:54,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:54,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:54,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:54,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:54,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:54" (1/1) ... [2024-11-28 05:09:54,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4f02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:54, skipping insertion in model container [2024-11-28 05:09:54,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:54" (1/1) ... [2024-11-28 05:09:54,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:54,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:54,896 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:09:54,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:55,052 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:09:55,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55 WrapperNode [2024-11-28 05:09:55,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:55,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:55,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:09:55,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:09:55,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,134 INFO L138 Inliner]: procedures = 173, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-11-28 05:09:55,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:55,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:09:55,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:09:55,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:09:55,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,186 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-28 05:09:55,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,201 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:09:55,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:09:55,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:09:55,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:09:55,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (1/1) ... [2024-11-28 05:09:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:55,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:55,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:09:55,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:09:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:09:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:09:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:09:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:09:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:09:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:09:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:09:55,317 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:09:55,519 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:09:55,522 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:09:55,912 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:09:55,913 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:09:56,169 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:09:56,169 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:09:56,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:56 BoogieIcfgContainer [2024-11-28 05:09:56,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:09:56,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:09:56,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:09:56,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:09:56,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:09:54" (1/3) ... [2024-11-28 05:09:56,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d5869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:56, skipping insertion in model container [2024-11-28 05:09:56,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:55" (2/3) ... [2024-11-28 05:09:56,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d5869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:56, skipping insertion in model container [2024-11-28 05:09:56,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:56" (3/3) ... [2024-11-28 05:09:56,187 INFO L128 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-11-28 05:09:56,210 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:09:56,212 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-28 05:09:56,213 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:09:56,291 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:09:56,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-11-28 05:09:56,406 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-11-28 05:09:56,409 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:09:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-28 05:09:56,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-11-28 05:09:56,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-11-28 05:09:56,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:09:56,447 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;@5d2292f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:09:56,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:09:56,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:09:56,490 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-28 05:09:56,490 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:09:56,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:56,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:56,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:56,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -252257762, now seen corresponding path program 1 times [2024-11-28 05:09:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:56,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32089628] [2024-11-28 05:09:56,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:56,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:56,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:56,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:56,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:09:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:56,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:09:56,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:56,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:56,798 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32089628] [2024-11-28 05:09:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32089628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:56,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:09:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904284997] [2024-11-28 05:09:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:56,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:56,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:56,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:56,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:56,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-28 05:09:56,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:56,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:56,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:57,371 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-11-28 05:09:57,373 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-28 05:09:57,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5390 event pairs, 178 based on Foata normal form. 95/1096 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2024-11-28 05:09:57,392 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-28 05:09:57,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2024-11-28 05:09:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-28 05:09:57,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-11-28 05:09:57,412 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2024-11-28 05:09:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2024-11-28 05:09:57,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:09:57,425 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-11-28 05:09:57,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-28 05:09:57,433 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-11-28 05:09:57,434 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-11-28 05:09:57,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-28 05:09:57,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:57,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:57,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:09:57,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:57,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1501736296, now seen corresponding path program 1 times [2024-11-28 05:09:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808001471] [2024-11-28 05:09:57,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:57,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:57,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:57,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:09:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:57,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:09:57,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:57,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 05:09:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:57,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:57,857 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808001471] [2024-11-28 05:09:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808001471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:57,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518737307] [2024-11-28 05:09:57,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:57,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:57,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:57,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:57,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:57,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-28 05:09:57,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:57,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:57,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:58,102 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-11-28 05:09:58,102 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-28 05:09:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3033 event pairs, 108 based on Foata normal form. 80/709 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2024-11-28 05:09:58,111 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-11-28 05:09:58,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2024-11-28 05:09:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-28 05:09:58,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-28 05:09:58,113 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2024-11-28 05:09:58,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2024-11-28 05:09:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:58,115 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-11-28 05:09:58,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-28 05:09:58,120 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-11-28 05:09:58,121 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-11-28 05:09:58,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-28 05:09:58,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:58,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:58,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:09:58,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:58,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 50888544, now seen corresponding path program 1 times [2024-11-28 05:09:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:58,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817626786] [2024-11-28 05:09:58,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:58,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:58,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:58,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:09:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:58,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:09:58,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:58,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:58,499 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817626786] [2024-11-28 05:09:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817626786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:58,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:58,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:58,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520685084] [2024-11-28 05:09:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:58,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:58,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:58,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:58,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:58,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:58,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:58,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:58,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:58,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:58,761 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-11-28 05:09:58,761 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-28 05:09:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2839 event pairs, 65 based on Foata normal form. 5/606 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2024-11-28 05:09:58,767 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-28 05:09:58,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2024-11-28 05:09:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-28 05:09:58,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-28 05:09:58,770 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2024-11-28 05:09:58,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2024-11-28 05:09:58,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:58,774 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-11-28 05:09:58,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-28 05:09:58,776 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-28 05:09:58,776 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-11-28 05:09:58,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:58,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:58,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:58,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:09:58,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:58,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 376108832, now seen corresponding path program 1 times [2024-11-28 05:09:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642903059] [2024-11-28 05:09:58,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:58,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:58,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:58,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:09:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:59,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:09:59,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:59,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:59,203 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642903059] [2024-11-28 05:09:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642903059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:59,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680925833] [2024-11-28 05:09:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:59,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:59,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:59,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:59,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 05:09:59,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:59,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:59,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 05:09:59,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:59,460 INFO L124 PetriNetUnfolderBase]: 294/567 cut-off events. [2024-11-28 05:09:59,461 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-28 05:09:59,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 567 events. 294/567 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2527 event pairs, 100 based on Foata normal form. 4/561 useless extension candidates. Maximal degree in co-relation 491. Up to 381 conditions per place. [2024-11-28 05:09:59,466 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 38 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-11-28 05:09:59,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 232 flow [2024-11-28 05:09:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-28 05:09:59,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2024-11-28 05:09:59,470 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 91 transitions. [2024-11-28 05:09:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 232 flow [2024-11-28 05:09:59,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 224 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:59,474 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 106 flow [2024-11-28 05:09:59,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-11-28 05:09:59,475 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-11-28 05:09:59,476 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 106 flow [2024-11-28 05:09:59,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:59,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:59,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:59,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:09:59,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:59,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 05:09:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1764660510, now seen corresponding path program 1 times [2024-11-28 05:09:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138620001] [2024-11-28 05:09:59,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:59,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:59,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:59,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:09:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:09:59,823 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:09:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:09:59,928 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 05:09:59,928 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:09:59,930 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-28 05:09:59,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-28 05:09:59,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-28 05:09:59,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-28 05:09:59,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-11-28 05:09:59,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:09:59,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:10:00,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:00,136 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 05:10:00,200 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 05:10:00,200 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 05:10:00,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:10:00 BasicIcfg [2024-11-28 05:10:00,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 05:10:00,214 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 05:10:00,214 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 05:10:00,214 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 05:10:00,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:56" (3/4) ... [2024-11-28 05:10:00,217 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 05:10:00,218 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 05:10:00,221 INFO L158 Benchmark]: Toolchain (without parser) took 5992.05ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 59.7MB in the beginning and 57.7MB in the end (delta: 2.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-28 05:10:00,222 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:10:00,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.77ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 39.0MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:10:00,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.00ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 37.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:10:00,223 INFO L158 Benchmark]: Boogie Preprocessor took 82.19ms. Allocated memory is still 83.9MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:10:00,223 INFO L158 Benchmark]: RCFGBuilder took 951.20ms. Allocated memory is still 83.9MB. Free memory was 35.2MB in the beginning and 40.0MB in the end (delta: -4.9MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-28 05:10:00,223 INFO L158 Benchmark]: TraceAbstraction took 4036.31ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 39.5MB in the beginning and 57.7MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:10:00,224 INFO L158 Benchmark]: Witness Printer took 6.72ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 6.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:10:00,226 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.77ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 39.0MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.00ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 37.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.19ms. Allocated memory is still 83.9MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 951.20ms. Allocated memory is still 83.9MB. Free memory was 35.2MB in the beginning and 40.0MB in the end (delta: -4.9MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4036.31ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 39.5MB in the beginning and 57.7MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.72ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 6.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-2] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1, t3=0] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 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: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 14, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 05:10:00,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de18cdef-6231-4aac-b8a2-9f246b249963/bin/uautomizer-verify-aQ6SnzHsRB/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: UNKNOWN: Overapproximated counterexample