./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --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_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/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_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/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_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:55:05,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:55:05,768 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 13:55:05,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:55:05,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:55:05,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:55:05,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:55:05,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:55:05,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:55:05,800 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:55:05,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:55:05,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:55:05,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:55:05,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:55:05,801 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:55:05,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 13:55:05,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:55:05,803 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:55:05,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:55:05,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:55:05,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:55:05,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:55:05,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:55:05,805 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_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/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 -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2024-12-02 13:55:06,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:55:06,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:55:06,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:55:06,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:55:06,088 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:55:06,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2024-12-02 13:55:09,269 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/data/b3f3c75fd/93da4b0d64104240a22ded43434b01f4/FLAG07342c481 [2024-12-02 13:55:09,476 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:55:09,477 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2024-12-02 13:55:09,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/data/b3f3c75fd/93da4b0d64104240a22ded43434b01f4/FLAG07342c481 [2024-12-02 13:55:09,501 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/data/b3f3c75fd/93da4b0d64104240a22ded43434b01f4 [2024-12-02 13:55:09,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:55:09,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:55:09,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:55:09,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:55:09,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:55:09,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c24db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09, skipping insertion in model container [2024-12-02 13:55:09,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:55:09,755 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 13:55:09,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:55:09,773 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:55:09,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:55:09,829 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:55:09,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09 WrapperNode [2024-12-02 13:55:09,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:55:09,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:55:09,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:55:09,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:55:09,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,883 INFO L138 Inliner]: procedures = 28, calls = 59, calls flagged for inlining = 23, calls inlined = 33, statements flattened = 374 [2024-12-02 13:55:09,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:55:09,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:55:09,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:55:09,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:55:09,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,922 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]. [2024-12-02 13:55:09,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:55:09,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:55:09,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:55:09,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:55:09,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (1/1) ... [2024-12-02 13:55:09,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:55:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:55:09,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:55:09,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 13:55:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 13:55:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 13:55:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 13:55:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 13:55:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-12-02 13:55:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-12-02 13:55:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-12-02 13:55:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-12-02 13:55:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 13:55:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 13:55:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:55:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:55:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:55:10,022 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 13:55:10,155 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:55:10,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:55:10,728 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 13:55:10,729 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:55:11,220 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:55:11,220 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 13:55:11,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:55:11 BoogieIcfgContainer [2024-12-02 13:55:11,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:55:11,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:55:11,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:55:11,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:55:11,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:55:09" (1/3) ... [2024-12-02 13:55:11,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb62de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:55:11, skipping insertion in model container [2024-12-02 13:55:11,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:09" (2/3) ... [2024-12-02 13:55:11,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb62de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:55:11, skipping insertion in model container [2024-12-02 13:55:11,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:55:11" (3/3) ... [2024-12-02 13:55:11,231 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2024-12-02 13:55:11,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:55:11,250 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-2.wvr.c that has 7 procedures, 75 locations, 1 initial locations, 5 loop locations, and 12 error locations. [2024-12-02 13:55:11,250 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 13:55:11,367 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-12-02 13:55:11,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 97 transitions, 260 flow [2024-12-02 13:55:11,455 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2024-12-02 13:55:11,457 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 13:55:11,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 81 events. 13/81 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 215 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2024-12-02 13:55:11,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 97 transitions, 260 flow [2024-12-02 13:55:11,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 80 transitions, 208 flow [2024-12-02 13:55:11,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:55:11,491 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;@69a682c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:55:11,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-12-02 13:55:11,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 13:55:11,495 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-12-02 13:55:11,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 13:55:11,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:55:11,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 13:55:11,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 13:55:11,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:55:11,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1106943, now seen corresponding path program 1 times [2024-12-02 13:55:11,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:55:11,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462050326] [2024-12-02 13:55:11,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:55:11,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:55:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:55:11,792 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 13:55:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:55:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462050326] [2024-12-02 13:55:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462050326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:55:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:55:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:55:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697678245] [2024-12-02 13:55:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:55:11,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:55:11,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:55:11,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:55:11,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:55:11,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 13:55:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:55:11,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:55:11,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 13:55:11,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:55:37,829 INFO L124 PetriNetUnfolderBase]: 332630/409272 cut-off events. [2024-12-02 13:55:37,829 INFO L125 PetriNetUnfolderBase]: For 29021/29021 co-relation queries the response was YES. [2024-12-02 13:55:38,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850110 conditions, 409272 events. 332630/409272 cut-off events. For 29021/29021 co-relation queries the response was YES. Maximal size of possible extension queue 11006. Compared 2247463 event pairs, 294270 based on Foata normal form. 1/309510 useless extension candidates. Maximal degree in co-relation 848508. Up to 409034 conditions per place. [2024-12-02 13:55:40,199 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 65 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-12-02 13:55:40,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 328 flow [2024-12-02 13:55:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:55:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:55:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-12-02 13:55:40,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3696369636963696 [2024-12-02 13:55:40,216 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 208 flow. Second operand 3 states and 112 transitions. [2024-12-02 13:55:40,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 328 flow [2024-12-02 13:55:41,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 296 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-12-02 13:55:41,221 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 166 flow [2024-12-02 13:55:41,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-12-02 13:55:41,227 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2024-12-02 13:55:41,227 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 166 flow [2024-12-02 13:55:41,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:55:41,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:55:41,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 13:55:41,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:55:41,228 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 13:55:41,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:55:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1106944, now seen corresponding path program 1 times [2024-12-02 13:55:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:55:41,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501569597] [2024-12-02 13:55:41,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:55:41,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:55:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:55:41,558 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 13:55:41,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:55:41,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501569597] [2024-12-02 13:55:41,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501569597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:55:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:55:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:55:41,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765432425] [2024-12-02 13:55:41,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:55:41,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:55:41,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:55:41,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:55:41,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:55:41,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 13:55:41,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:55:41,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:55:41,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 13:55:41,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:56:04,140 INFO L124 PetriNetUnfolderBase]: 332631/409275 cut-off events. [2024-12-02 13:56:04,140 INFO L125 PetriNetUnfolderBase]: For 6573/6573 co-relation queries the response was YES. [2024-12-02 13:56:04,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826298 conditions, 409275 events. 332631/409275 cut-off events. For 6573/6573 co-relation queries the response was YES. Maximal size of possible extension queue 11006. Compared 2247932 event pairs, 294270 based on Foata normal form. 0/309512 useless extension candidates. Maximal degree in co-relation 826276. Up to 409039 conditions per place. [2024-12-02 13:56:06,047 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 67 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-12-02 13:56:06,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 316 flow [2024-12-02 13:56:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:56:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:56:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-12-02 13:56:06,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3069306930693069 [2024-12-02 13:56:06,050 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 166 flow. Second operand 4 states and 124 transitions. [2024-12-02 13:56:06,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 316 flow [2024-12-02 13:56:06,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:56:06,054 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 189 flow [2024-12-02 13:56:06,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-12-02 13:56:06,055 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-12-02 13:56:06,055 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 189 flow [2024-12-02 13:56:06,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:56:06,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:56:06,055 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-12-02 13:56:06,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:56:06,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 13:56:06,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:56:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1063808613, now seen corresponding path program 1 times [2024-12-02 13:56:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:56:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115278998] [2024-12-02 13:56:06,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:56:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:56:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:56:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:56:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:56:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115278998] [2024-12-02 13:56:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115278998] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:56:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666165044] [2024-12-02 13:56:06,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:56:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:56:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:56:06,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:56:06,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:56:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:56:06,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 13:56:06,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:56:06,618 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 8 treesize of output 1 [2024-12-02 13:56:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:56:06,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:56:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:56:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666165044] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:56:06,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:56:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-12-02 13:56:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390190606] [2024-12-02 13:56:06,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:56:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:56:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:56:06,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:56:06,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:56:07,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 13:56:07,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 189 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 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 13:56:07,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:56:07,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 13:56:07,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:56:28,424 INFO L124 PetriNetUnfolderBase]: 332631/409274 cut-off events. [2024-12-02 13:56:28,424 INFO L125 PetriNetUnfolderBase]: For 6573/6573 co-relation queries the response was YES. [2024-12-02 13:56:29,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826305 conditions, 409274 events. 332631/409274 cut-off events. For 6573/6573 co-relation queries the response was YES. Maximal size of possible extension queue 11006. Compared 2248237 event pairs, 294270 based on Foata normal form. 0/309511 useless extension candidates. Maximal degree in co-relation 826283. Up to 409035 conditions per place. [2024-12-02 13:56:30,058 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 63 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-12-02 13:56:30,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 325 flow [2024-12-02 13:56:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:56:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 13:56:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-12-02 13:56:30,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24587458745874588 [2024-12-02 13:56:30,060 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 189 flow. Second operand 6 states and 149 transitions. [2024-12-02 13:56:30,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 325 flow [2024-12-02 13:56:30,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:56:30,061 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 196 flow [2024-12-02 13:56:30,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-12-02 13:56:30,062 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2024-12-02 13:56:30,062 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 196 flow [2024-12-02 13:56:30,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 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 13:56:30,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:56:30,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:56:30,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:56:30,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cacbe-5b08-44b7-9bdd-c3ddc7a581d5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:56:30,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 13:56:30,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:56:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -612361556, now seen corresponding path program 1 times [2024-12-02 13:56:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:56:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142494334] [2024-12-02 13:56:30,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:56:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:56:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:56:30,363 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 13:56:30,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:56:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142494334] [2024-12-02 13:56:30,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142494334] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:56:30,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:56:30,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:56:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802349047] [2024-12-02 13:56:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:56:30,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:56:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:56:30,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:56:30,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:56:30,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 13:56:30,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 13:56:30,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:56:30,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 13:56:30,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand