./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.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_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1 --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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:30:21,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:30:21,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 06:30:21,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:30:21,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:30:21,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:30:21,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:30:21,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:30:21,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:30:21,568 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:30:21,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:30:21,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:30:21,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:30:21,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:30:21,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:30:21,570 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:21,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:21,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:21,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:30:21,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:30:21,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:30:21,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:30:21,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:30:21,572 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_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1 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 -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c [2024-12-02 06:30:21,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:30:21,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:30:21,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:30:21,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:30:21,800 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:30:21,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2024-12-02 06:30:24,391 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/data/7018e477c/71d316dd855d4beb954d7ba787a5b1b0/FLAG316fdb68b [2024-12-02 06:30:24,673 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:30:24,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2024-12-02 06:30:24,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/data/7018e477c/71d316dd855d4beb954d7ba787a5b1b0/FLAG316fdb68b [2024-12-02 06:30:24,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/data/7018e477c/71d316dd855d4beb954d7ba787a5b1b0 [2024-12-02 06:30:24,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:30:24,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:30:24,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:24,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:30:24,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:30:24,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:24" (1/1) ... [2024-12-02 06:30:24,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3131dc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:24, skipping insertion in model container [2024-12-02 06:30:24,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:24" (1/1) ... [2024-12-02 06:30:25,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:30:25,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:25,393 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:30:25,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:25,497 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:30:25,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25 WrapperNode [2024-12-02 06:30:25,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:25,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:25,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:30:25,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:30:25,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,537 INFO L138 Inliner]: procedures = 280, calls = 99, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 401 [2024-12-02 06:30:25,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:25,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:30:25,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:30:25,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:30:25,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,572 INFO L175 MemorySlicer]: Split 56 memory accesses to 9 slices as follows [2, 2, 2, 5, 5, 5, 5, 28, 2]. 50 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 0, 0, 5, 5, 5, 5, 0, 0]. The 17 writes are split as follows [0, 1, 1, 0, 0, 0, 0, 14, 1]. [2024-12-02 06:30:25,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,589 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:30:25,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:30:25,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:30:25,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:30:25,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (1/1) ... [2024-12-02 06:30:25,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:25,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:30:25,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08c5bcb-0761-4f8f-8255-8deaf6bf2bb3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 06:30:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 06:30:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 06:30:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 06:30:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 06:30:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-12-02 06:30:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 06:30:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 06:30:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:30:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:30:25,667 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 06:30:25,856 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:30:25,858 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:30:26,489 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:30:26,490 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:30:26,778 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:30:26,778 INFO L312 CfgBuilder]: Removed 19 assume(true) statements. [2024-12-02 06:30:26,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:26 BoogieIcfgContainer [2024-12-02 06:30:26,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:30:26,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:30:26,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:30:26,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:30:26,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:30:24" (1/3) ... [2024-12-02 06:30:26,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fd39d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:26, skipping insertion in model container [2024-12-02 06:30:26,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:25" (2/3) ... [2024-12-02 06:30:26,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fd39d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:26, skipping insertion in model container [2024-12-02 06:30:26,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:26" (3/3) ... [2024-12-02 06:30:26,788 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2024-12-02 06:30:26,803 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:30:26,805 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_84-list2_racing2.i that has 4 procedures, 213 locations, 1 initial locations, 19 loop locations, and 71 error locations. [2024-12-02 06:30:26,805 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:30:26,928 INFO L143 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-12-02 06:30:26,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 256 transitions, 551 flow [2024-12-02 06:30:27,256 INFO L124 PetriNetUnfolderBase]: 142/957 cut-off events. [2024-12-02 06:30:27,258 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-12-02 06:30:27,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 957 events. 142/957 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7404 event pairs, 0 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 492. Up to 16 conditions per place. [2024-12-02 06:30:27,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 256 transitions, 551 flow [2024-12-02 06:30:27,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 256 transitions, 551 flow [2024-12-02 06:30:27,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:30:27,320 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;@4118bdbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:30:27,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2024-12-02 06:30:27,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:30:27,325 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 06:30:27,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:30:27,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:30:27,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 06:30:27,326 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 111 more)] === [2024-12-02 06:30:27,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 39747, now seen corresponding path program 1 times [2024-12-02 06:30:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223618827] [2024-12-02 06:30:27,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223618827] [2024-12-02 06:30:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223618827] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:27,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:27,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 06:30:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291730292] [2024-12-02 06:30:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:27,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:30:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:27,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:30:27,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:30:27,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 256 [2024-12-02 06:30:27,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 256 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2024-12-02 06:30:27,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:30:27,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 256 [2024-12-02 06:30:27,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:31:17,467 INFO L124 PetriNetUnfolderBase]: 363809/682131 cut-off events. [2024-12-02 06:31:17,467 INFO L125 PetriNetUnfolderBase]: For 9394/9394 co-relation queries the response was YES. [2024-12-02 06:31:18,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175231 conditions, 682131 events. 363809/682131 cut-off events. For 9394/9394 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 8511811 event pairs, 335070 based on Foata normal form. 71770/670195 useless extension candidates. Maximal degree in co-relation 1031564. Up to 488695 conditions per place. [2024-12-02 06:31:21,167 INFO L140 encePairwiseOnDemand]: 223/256 looper letters, 105 selfloop transitions, 2 changer transitions 0/223 dead transitions. [2024-12-02 06:31:21,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 223 transitions, 699 flow [2024-12-02 06:31:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:31:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2024-12-02 06:31:21,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-12-02 06:31:21,184 INFO L175 Difference]: Start difference. First operand has 222 places, 256 transitions, 551 flow. Second operand 3 states and 486 transitions. [2024-12-02 06:31:21,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 223 transitions, 699 flow [2024-12-02 06:31:21,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 223 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:31:21,332 INFO L231 Difference]: Finished difference. Result has 218 places, 223 transitions, 489 flow [2024-12-02 06:31:21,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2024-12-02 06:31:21,336 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -4 predicate places. [2024-12-02 06:31:21,337 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 489 flow [2024-12-02 06:31:21,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2024-12-02 06:31:21,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:31:21,337 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 06:31:21,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:31:21,338 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 111 more)] === [2024-12-02 06:31:21,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash 39748, now seen corresponding path program 1 times [2024-12-02 06:31:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184314456] [2024-12-02 06:31:21,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:21,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184314456] [2024-12-02 06:31:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184314456] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:21,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:21,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 06:31:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14089303] [2024-12-02 06:31:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:21,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:21,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:21,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:21,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2024-12-02 06:31:21,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-12-02 06:31:21,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:31:21,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2024-12-02 06:31:21,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:32:07,522 INFO L124 PetriNetUnfolderBase]: 363809/682127 cut-off events. [2024-12-02 06:32:07,522 INFO L125 PetriNetUnfolderBase]: For 9395/9395 co-relation queries the response was YES. [2024-12-02 06:32:08,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175228 conditions, 682127 events. 363809/682127 cut-off events. For 9395/9395 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 8511672 event pairs, 335070 based on Foata normal form. 3/598424 useless extension candidates. Maximal degree in co-relation 1175212. Up to 488695 conditions per place. [2024-12-02 06:32:11,220 INFO L140 encePairwiseOnDemand]: 250/256 looper letters, 103 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2024-12-02 06:32:11,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 691 flow [2024-12-02 06:32:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:32:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2024-12-02 06:32:11,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6028645833333334 [2024-12-02 06:32:11,223 INFO L175 Difference]: Start difference. First operand has 218 places, 223 transitions, 489 flow. Second operand 3 states and 463 transitions. [2024-12-02 06:32:11,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 691 flow [2024-12-02 06:32:11,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:32:11,303 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 481 flow [2024-12-02 06:32:11,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2024-12-02 06:32:11,304 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -8 predicate places. [2024-12-02 06:32:11,304 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 481 flow [2024-12-02 06:32:11,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-12-02 06:32:11,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:32:11,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:11,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:32:11,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 111 more)] === [2024-12-02 06:32:11,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash 770198376, now seen corresponding path program 1 times [2024-12-02 06:32:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:11,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555517293] [2024-12-02 06:32:11,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:11,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:32:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555517293] [2024-12-02 06:32:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555517293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:32:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78508968] [2024-12-02 06:32:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:11,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:11,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:11,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:11,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2024-12-02 06:32:11,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 219 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2024-12-02 06:32:11,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:32:11,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2024-12-02 06:32:11,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:32:58,617 INFO L124 PetriNetUnfolderBase]: 381535/700851 cut-off events. [2024-12-02 06:32:58,617 INFO L125 PetriNetUnfolderBase]: For 8786/8786 co-relation queries the response was YES. [2024-12-02 06:32:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218828 conditions, 700851 events. 381535/700851 cut-off events. For 8786/8786 co-relation queries the response was YES. Maximal size of possible extension queue 13361. Compared 8605295 event pairs, 317502 based on Foata normal form. 0/620762 useless extension candidates. Maximal degree in co-relation 1218812. Up to 463846 conditions per place. [2024-12-02 06:33:02,205 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 167 selfloop transitions, 2 changer transitions 0/279 dead transitions. [2024-12-02 06:33:02,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 279 transitions, 939 flow [2024-12-02 06:33:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:33:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2024-12-02 06:33:02,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68359375 [2024-12-02 06:33:02,208 INFO L175 Difference]: Start difference. First operand has 214 places, 219 transitions, 481 flow. Second operand 3 states and 525 transitions. [2024-12-02 06:33:02,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 279 transitions, 939 flow [2024-12-02 06:33:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 279 transitions, 935 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:33:02,331 INFO L231 Difference]: Finished difference. Result has 212 places, 217 transitions, 477 flow [2024-12-02 06:33:02,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=212, PETRI_TRANSITIONS=217} [2024-12-02 06:33:02,332 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -10 predicate places. [2024-12-02 06:33:02,332 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 217 transitions, 477 flow [2024-12-02 06:33:02,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2024-12-02 06:33:02,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:33:02,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:02,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:33:02,333 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 111 more)] === [2024-12-02 06:33:02,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 770198377, now seen corresponding path program 1 times [2024-12-02 06:33:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713345902] [2024-12-02 06:33:02,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:33:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713345902] [2024-12-02 06:33:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713345902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:02,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:33:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272187801] [2024-12-02 06:33:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:02,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:02,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:02,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:02,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 256 [2024-12-02 06:33:02,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 217 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2024-12-02 06:33:02,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:33:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 256 [2024-12-02 06:33:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand