./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:09:18,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:09:18,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:09:18,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:09:18,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:09:18,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:09:18,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:09:18,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:09:18,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:09:18,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:09:18,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:09:18,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:09:18,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:09:18,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:09:18,884 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:09:18,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:09:18,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:09:18,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:09:18,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:09:18,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:09:18,886 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:09:18,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:09:18,890 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:09:18,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:09:18,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:09:18,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:09:18,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:09:18,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:09:18,892 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:09:18,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:09:18,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:09:18,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:09:18,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:09:18,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:18,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:09:18,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:09:18,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:09:18,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:09:18,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:09:18,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:09:18,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:09:18,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:09:18,898 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-08 17:09:19,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:09:19,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:09:19,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:09:19,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:09:19,180 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:09:19,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c Unable to find full path for "g++" [2024-11-08 17:09:21,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:09:21,472 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:09:21,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-08 17:09:21,487 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/data/e54be3e2e/67fef8b3a90745e29f6f227c641b517c/FLAG692424e62 [2024-11-08 17:09:21,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/data/e54be3e2e/67fef8b3a90745e29f6f227c641b517c [2024-11-08 17:09:21,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:09:21,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:09:21,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:21,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:09:21,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:09:21,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b76dccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21, skipping insertion in model container [2024-11-08 17:09:21,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:09:21,816 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:09:21,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:21,830 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:09:21,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:21,883 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:09:21,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21 WrapperNode [2024-11-08 17:09:21,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:21,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:21,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:09:21,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:09:21,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,939 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 292 [2024-11-08 17:09:21,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:21,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:09:21,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:09:21,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:09:21,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,976 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 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:09:21,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:21,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:22,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:09:22,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:09:22,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:09:22,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:09:22,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (1/1) ... [2024-11-08 17:09:22,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:22,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:09:22,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:09:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:09:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:09:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:09:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:09:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:09:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:09:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:09:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:09:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:09:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:09:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:09:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:09:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:09:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:09:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:09:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:09:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:09:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:09:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:09:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:09:22,081 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:09:22,227 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:09:22,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:09:22,865 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:09:22,865 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:09:23,255 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:09:23,255 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 17:09:23,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:23 BoogieIcfgContainer [2024-11-08 17:09:23,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:09:23,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:09:23,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:09:23,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:09:23,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:09:21" (1/3) ... [2024-11-08 17:09:23,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d756dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:23, skipping insertion in model container [2024-11-08 17:09:23,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:21" (2/3) ... [2024-11-08 17:09:23,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d756dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:23, skipping insertion in model container [2024-11-08 17:09:23,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:23" (3/3) ... [2024-11-08 17:09:23,265 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-08 17:09:23,284 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:09:23,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 17:09:23,285 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:09:23,363 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:09:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 168 flow [2024-11-08 17:09:23,441 INFO L124 PetriNetUnfolderBase]: 10/66 cut-off events. [2024-11-08 17:09:23,442 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:09:23,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 66 events. 10/66 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-08 17:09:23,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 168 flow [2024-11-08 17:09:23,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 154 flow [2024-11-08 17:09:23,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:09:23,469 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;@66212ca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:09:23,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-08 17:09:23,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:09:23,479 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-08 17:09:23,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:09:23,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:23,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:09:23,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:23,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 27156717, now seen corresponding path program 1 times [2024-11-08 17:09:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730208541] [2024-11-08 17:09:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730208541] [2024-11-08 17:09:23,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730208541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:23,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:23,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:09:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075656468] [2024-11-08 17:09:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:23,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:23,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-08 17:09:23,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:23,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:23,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-08 17:09:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:31,450 INFO L124 PetriNetUnfolderBase]: 52564/68152 cut-off events. [2024-11-08 17:09:31,450 INFO L125 PetriNetUnfolderBase]: For 2987/2987 co-relation queries the response was YES. [2024-11-08 17:09:31,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138674 conditions, 68152 events. 52564/68152 cut-off events. For 2987/2987 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 380524 event pairs, 45952 based on Foata normal form. 1/48261 useless extension candidates. Maximal degree in co-relation 131473. Up to 68054 conditions per place. [2024-11-08 17:09:31,920 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-08 17:09:31,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 238 flow [2024-11-08 17:09:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-08 17:09:31,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-11-08 17:09:31,936 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 154 flow. Second operand 3 states and 97 transitions. [2024-11-08 17:09:31,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 238 flow [2024-11-08 17:09:32,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:09:32,125 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 128 flow [2024-11-08 17:09:32,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-11-08 17:09:32,131 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2024-11-08 17:09:32,131 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 128 flow [2024-11-08 17:09:32,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:32,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:32,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:09:32,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:09:32,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:32,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash 27156718, now seen corresponding path program 1 times [2024-11-08 17:09:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129484378] [2024-11-08 17:09:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129484378] [2024-11-08 17:09:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129484378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730335816] [2024-11-08 17:09:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:32,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:09:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:09:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:09:32,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 70 [2024-11-08 17:09:32,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2024-11-08 17:09:32,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:32,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 70 [2024-11-08 17:09:32,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:37,495 INFO L124 PetriNetUnfolderBase]: 52566/68159 cut-off events. [2024-11-08 17:09:37,496 INFO L125 PetriNetUnfolderBase]: For 697/697 co-relation queries the response was YES. [2024-11-08 17:09:37,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137053 conditions, 68159 events. 52566/68159 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 380641 event pairs, 45952 based on Foata normal form. 0/48263 useless extension candidates. Maximal degree in co-relation 137016. Up to 68063 conditions per place. [2024-11-08 17:09:38,003 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 55 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-08 17:09:38,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 266 flow [2024-11-08 17:09:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:09:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:09:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-08 17:09:38,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-08 17:09:38,005 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 128 flow. Second operand 4 states and 105 transitions. [2024-11-08 17:09:38,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 266 flow [2024-11-08 17:09:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:38,008 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 156 flow [2024-11-08 17:09:38,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-11-08 17:09:38,009 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-11-08 17:09:38,009 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 156 flow [2024-11-08 17:09:38,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2024-11-08 17:09:38,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:38,010 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-08 17:09:38,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:09:38,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:38,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1572845137, now seen corresponding path program 1 times [2024-11-08 17:09:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:38,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878102166] [2024-11-08 17:09:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:38,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878102166] [2024-11-08 17:09:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878102166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745642800] [2024-11-08 17:09:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:38,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:38,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:38,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:38,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:09:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:38,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:09:38,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:38,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 17:09:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:39,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:39,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745642800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:39,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:39,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-08 17:09:39,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356900498] [2024-11-08 17:09:39,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:39,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:09:39,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:09:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:09:39,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 70 [2024-11-08 17:09:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:39,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:39,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 70 [2024-11-08 17:09:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:44,622 INFO L124 PetriNetUnfolderBase]: 52565/68157 cut-off events. [2024-11-08 17:09:44,622 INFO L125 PetriNetUnfolderBase]: For 697/697 co-relation queries the response was YES. [2024-11-08 17:09:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137059 conditions, 68157 events. 52565/68157 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 380444 event pairs, 45952 based on Foata normal form. 0/48265 useless extension candidates. Maximal degree in co-relation 137025. Up to 68056 conditions per place. [2024-11-08 17:09:44,961 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 50 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-11-08 17:09:44,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 272 flow [2024-11-08 17:09:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:09:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:09:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-08 17:09:44,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-11-08 17:09:44,963 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 156 flow. Second operand 6 states and 126 transitions. [2024-11-08 17:09:44,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 272 flow [2024-11-08 17:09:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:09:44,966 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 172 flow [2024-11-08 17:09:44,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-08 17:09:44,967 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-11-08 17:09:44,967 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 172 flow [2024-11-08 17:09:44,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:44,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:44,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:44,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:09:45,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:45,172 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:45,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 879187171, now seen corresponding path program 1 times [2024-11-08 17:09:45,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:45,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780664034] [2024-11-08 17:09:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:45,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780664034] [2024-11-08 17:09:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780664034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:45,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:45,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963763818] [2024-11-08 17:09:45,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:45,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:09:45,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:09:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:09:45,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-08 17:09:45,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:45,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:45,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-08 17:09:45,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:48,557 INFO L124 PetriNetUnfolderBase]: 33317/43274 cut-off events. [2024-11-08 17:09:48,557 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-08 17:09:48,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87075 conditions, 43274 events. 33317/43274 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 230067 event pairs, 28599 based on Foata normal form. 0/33788 useless extension candidates. Maximal degree in co-relation 87051. Up to 43182 conditions per place. [2024-11-08 17:09:48,768 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 44 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-08 17:09:48,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 260 flow [2024-11-08 17:09:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:09:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:09:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-08 17:09:48,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-08 17:09:48,770 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 172 flow. Second operand 4 states and 105 transitions. [2024-11-08 17:09:48,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 260 flow [2024-11-08 17:09:48,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 234 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-08 17:09:48,772 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 146 flow [2024-11-08 17:09:48,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-08 17:09:48,773 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-11-08 17:09:48,773 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 146 flow [2024-11-08 17:09:48,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:48,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:48,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:48,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:09:48,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:48,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 879187172, now seen corresponding path program 1 times [2024-11-08 17:09:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491838301] [2024-11-08 17:09:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491838301] [2024-11-08 17:09:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491838301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666017072] [2024-11-08 17:09:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:48,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:09:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:09:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:09:48,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 70 [2024-11-08 17:09:48,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:48,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:48,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 70 [2024-11-08 17:09:48,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:52,879 INFO L124 PetriNetUnfolderBase]: 45008/59022 cut-off events. [2024-11-08 17:09:52,879 INFO L125 PetriNetUnfolderBase]: For 752/752 co-relation queries the response was YES. [2024-11-08 17:09:52,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118690 conditions, 59022 events. 45008/59022 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 1936. Compared 329795 event pairs, 39350 based on Foata normal form. 1507/47772 useless extension candidates. Maximal degree in co-relation 118672. Up to 42953 conditions per place. [2024-11-08 17:09:53,144 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 79 selfloop transitions, 6 changer transitions 1/93 dead transitions. [2024-11-08 17:09:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 93 transitions, 398 flow [2024-11-08 17:09:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:09:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:09:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-08 17:09:53,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-11-08 17:09:53,147 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 146 flow. Second operand 5 states and 155 transitions. [2024-11-08 17:09:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 93 transitions, 398 flow [2024-11-08 17:09:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:53,150 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 173 flow [2024-11-08 17:09:53,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-08 17:09:53,151 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-08 17:09:53,151 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 173 flow [2024-11-08 17:09:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:53,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:53,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:53,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:09:53,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:53,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1263091911, now seen corresponding path program 1 times [2024-11-08 17:09:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:53,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663335548] [2024-11-08 17:09:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663335548] [2024-11-08 17:09:53,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663335548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590498410] [2024-11-08 17:09:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:53,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:53,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:53,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:09:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:53,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:09:53,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:53,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590498410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:53,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:53,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 17:09:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835196544] [2024-11-08 17:09:53,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:53,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:09:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:09:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:09:53,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 70 [2024-11-08 17:09:53,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 173 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:53,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:53,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 70 [2024-11-08 17:09:53,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:58,581 INFO L124 PetriNetUnfolderBase]: 56884/74961 cut-off events. [2024-11-08 17:09:58,581 INFO L125 PetriNetUnfolderBase]: For 4846/4846 co-relation queries the response was YES. [2024-11-08 17:09:58,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155505 conditions, 74961 events. 56884/74961 cut-off events. For 4846/4846 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 430940 event pairs, 50279 based on Foata normal form. 1506/60271 useless extension candidates. Maximal degree in co-relation 123426. Up to 42951 conditions per place. [2024-11-08 17:09:58,926 INFO L140 encePairwiseOnDemand]: 59/70 looper letters, 82 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-08 17:09:58,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 463 flow [2024-11-08 17:09:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:09:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:09:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-11-08 17:09:58,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3253968253968254 [2024-11-08 17:09:58,929 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 173 flow. Second operand 9 states and 205 transitions. [2024-11-08 17:09:58,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 463 flow [2024-11-08 17:09:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 455 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:58,941 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 240 flow [2024-11-08 17:09:58,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-11-08 17:09:58,942 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-11-08 17:09:58,942 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 240 flow [2024-11-08 17:09:58,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:58,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:58,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:58,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:09:59,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ce10a-da35-4192-9ca2-860437adb7c8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:09:59,147 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-08 17:09:59,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash -936128954, now seen corresponding path program 1 times [2024-11-08 17:09:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119820982] [2024-11-08 17:09:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119820982] [2024-11-08 17:09:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119820982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:59,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165146320] [2024-11-08 17:09:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:59,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:09:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:09:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:09:59,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 70 [2024-11-08 17:09:59,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:59,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:59,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 70 [2024-11-08 17:09:59,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand