./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E --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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:08:24,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:08:25,070 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:08:25,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:08:25,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:08:25,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:08:25,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:08:25,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:08:25,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:08:25,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:08:25,123 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:08:25,126 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:08:25,126 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:08:25,126 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:08:25,126 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:08:25,126 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:08:25,126 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:08:25,127 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:08:25,127 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:08:25,127 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:08:25,127 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:08:25,127 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:08:25,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:08:25,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:08:25,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:08:25,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:08:25,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:08:25,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:08:25,129 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:08:25,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:08:25,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:08:25,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:08:25,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:08:25,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:08:25,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:08:25,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:08:25,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:08:25,134 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E 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 -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 [2024-11-14 04:08:25,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:08:25,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:08:25,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:08:25,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:08:25,465 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:08:25,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i Unable to find full path for "g++" [2024-11-14 04:08:27,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:08:27,881 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:08:27,882 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2024-11-14 04:08:27,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/data/42e87fb0c/a0e2cc0c87a54d209d995457e265c9c1/FLAG33a841907 [2024-11-14 04:08:27,917 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/data/42e87fb0c/a0e2cc0c87a54d209d995457e265c9c1 [2024-11-14 04:08:27,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:08:27,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:08:27,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:27,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:08:27,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:08:27,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:27" (1/1) ... [2024-11-14 04:08:27,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54664917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:27, skipping insertion in model container [2024-11-14 04:08:27,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:27" (1/1) ... [2024-11-14 04:08:27,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:08:28,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:28,607 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:08:28,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:28,769 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:08:28,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28 WrapperNode [2024-11-14 04:08:28,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:28,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:08:28,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:08:28,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:08:28,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,863 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2024-11-14 04:08:28,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:08:28,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:08:28,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:08:28,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:08:28,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:08:28,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:08:28,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:08:28,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:08:28,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (1/1) ... [2024-11-14 04:08:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:08:28,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:08:28,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:08:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7297c60-c42f-4349-b11a-f8fe2b8dc9a1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:08:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:08:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:08:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 04:08:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:08:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-14 04:08:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-14 04:08:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-14 04:08:29,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-14 04:08:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-14 04:08:29,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-14 04:08:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-14 04:08:29,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-14 04:08:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:08:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 04:08:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:08:29,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:08:29,041 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 04:08:29,296 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:08:29,300 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:08:30,149 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 04:08:30,149 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:08:31,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:08:31,065 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:08:31,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:08:31 BoogieIcfgContainer [2024-11-14 04:08:31,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:08:31,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:08:31,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:08:31,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:08:31,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:08:27" (1/3) ... [2024-11-14 04:08:31,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5e352c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:08:31, skipping insertion in model container [2024-11-14 04:08:31,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:28" (2/3) ... [2024-11-14 04:08:31,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5e352c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:08:31, skipping insertion in model container [2024-11-14 04:08:31,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:08:31" (3/3) ... [2024-11-14 04:08:31,081 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2024-11-14 04:08:31,103 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:08:31,150 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_rmo.oepc.i that has 5 procedures, 91 locations, 1 initial locations, 0 loop locations, and 44 error locations. [2024-11-14 04:08:31,150 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 04:08:31,350 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 04:08:31,388 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 92 transitions, 200 flow [2024-11-14 04:08:52,681 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 589834 states, 576458 states have (on average 4.752778172911123) internal successors, (2739777), 589833 states have internal predecessors, (2739777), 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) [2024-11-14 04:08:52,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:08:52,819 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;@157a482c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:08:52,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2024-11-14 04:08:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 589834 states, 576458 states have (on average 4.752778172911123) internal successors, (2739777), 589833 states have internal predecessors, (2739777), 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) [2024-11-14 04:08:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:08:53,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:53,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:08:53,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-11-14 04:08:53,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash 26537218, now seen corresponding path program 1 times [2024-11-14 04:08:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:08:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296664387] [2024-11-14 04:08:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:08:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:54,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:08:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296664387] [2024-11-14 04:08:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296664387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:54,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:54,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:08:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368769611] [2024-11-14 04:08:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:08:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:08:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:08:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:55,351 INFO L87 Difference]: Start difference. First operand has 589834 states, 576458 states have (on average 4.752778172911123) internal successors, (2739777), 589833 states have internal predecessors, (2739777), 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) [2024-11-14 04:09:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:09,089 INFO L93 Difference]: Finished difference Result 606844 states and 2846568 transitions. [2024-11-14 04:09:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:09:09,096 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 [2024-11-14 04:09:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:12,517 INFO L225 Difference]: With dead ends: 606844 [2024-11-14 04:09:12,521 INFO L226 Difference]: Without dead ends: 82884 [2024-11-14 04:09:13,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:09:13,444 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:13,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 17 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:09:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82884 states. [2024-11-14 04:09:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82884 to 82884. [2024-11-14 04:09:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82884 states, 82629 states have (on average 4.444722797080928) internal successors, (367263), 82883 states have internal predecessors, (367263), 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) [2024-11-14 04:09:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82884 states to 82884 states and 367263 transitions. [2024-11-14 04:09:20,107 INFO L78 Accepts]: Start accepts. Automaton has 82884 states and 367263 transitions. Word has length 4 [2024-11-14 04:09:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:20,109 INFO L471 AbstractCegarLoop]: Abstraction has 82884 states and 367263 transitions. [2024-11-14 04:09:20,111 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-11-14 04:09:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 82884 states and 367263 transitions. [2024-11-14 04:09:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:09:20,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:20,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:09:20,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:09:20,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2024-11-14 04:09:20,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 26537219, now seen corresponding path program 1 times [2024-11-14 04:09:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:09:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626549731] [2024-11-14 04:09:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:09:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:20,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:09:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626549731] [2024-11-14 04:09:20,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626549731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:20,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:20,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:09:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432983160] [2024-11-14 04:09:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:20,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:09:20,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:09:20,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:09:20,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:09:20,454 INFO L87 Difference]: Start difference. First operand 82884 states and 367263 transitions. 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)