./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:58,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:59,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 11:23:59,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:59,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:59,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:59,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:59,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:59,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:59,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:59,110 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:59,110 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:59,111 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:59,113 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:59,113 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:59,114 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:59,114 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:59,114 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:59,115 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:59,115 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:59,120 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:59,124 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:59,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 11:23:59,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 11:23:59,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:59,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:23:59,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:59,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:23:59,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:59,127 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 11:23:59,127 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 11:23:59,132 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 11:23:59,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:59,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 11:23:59,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:59,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:23:59,138 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:23:59,138 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:59,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:59,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:59,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:59,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:59,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:59,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:59,141 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:59,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:59,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:59,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:59,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:59,144 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 [2024-11-02 11:23:59,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:59,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:59,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:59,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:59,545 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:59,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i Unable to find full path for "g++" [2024-11-02 11:24:01,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:01,876 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:01,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2024-11-02 11:24:01,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/data/91d08bc40/b7714069fceb4c5abcd49d91b4795a3d/FLAGebaa09184 [2024-11-02 11:24:01,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/data/91d08bc40/b7714069fceb4c5abcd49d91b4795a3d [2024-11-02 11:24:01,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:01,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:01,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:01,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:01,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:01,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:01" (1/1) ... [2024-11-02 11:24:01,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509cf968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:01, skipping insertion in model container [2024-11-02 11:24:01,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:01" (1/1) ... [2024-11-02 11:24:01,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:02,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:02,506 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:02,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:02,655 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:02,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02 WrapperNode [2024-11-02 11:24:02,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:02,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:02,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:02,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:02,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,715 INFO L138 Inliner]: procedures = 176, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-11-02 11:24:02,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:02,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:02,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:02,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:02,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:02,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:02,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:02,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:02,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (1/1) ... [2024-11-02 11:24:02,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:02,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:02,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2ae298-0793-4d41-8e42-9d4562036433/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:24:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:24:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 11:24:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:24:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-02 11:24:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-02 11:24:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-02 11:24:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-02 11:24:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-02 11:24:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-02 11:24:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-02 11:24:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-02 11:24:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:24:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 11:24:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:02,875 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 11:24:03,162 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:03,165 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:03,832 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 11:24:03,833 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:04,453 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:04,453 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 11:24:04,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:04 BoogieIcfgContainer [2024-11-02 11:24:04,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:04,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:04,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:04,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:04,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:01" (1/3) ... [2024-11-02 11:24:04,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb834d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:04, skipping insertion in model container [2024-11-02 11:24:04,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:02" (2/3) ... [2024-11-02 11:24:04,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb834d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:04, skipping insertion in model container [2024-11-02 11:24:04,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:04" (3/3) ... [2024-11-02 11:24:04,464 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.i [2024-11-02 11:24:04,484 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:04,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-02 11:24:04,484 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 11:24:04,648 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-02 11:24:04,677 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 80 transitions, 176 flow [2024-11-02 11:24:17,891 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:17,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:17,965 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=FINITE_AUTOMATA, 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;@621151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:17,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-02 11:24:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 11:24:18,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:18,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 11:24:18,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-02 11:24:18,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 23290014, now seen corresponding path program 1 times [2024-11-02 11:24:18,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303136107] [2024-11-02 11:24:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:18,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303136107] [2024-11-02 11:24:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303136107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:18,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:18,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 11:24:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277189023] [2024-11-02 11:24:18,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:18,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:18,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:19,572 INFO L87 Difference]: Start difference. First operand has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:28,468 INFO L93 Difference]: Finished difference Result 331757 states and 1564133 transitions. [2024-11-02 11:24:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:28,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2024-11-02 11:24:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted.