./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje --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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:04:14,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:04:14,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 05:04:14,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:04:14,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:04:14,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:04:14,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:04:14,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:04:14,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:04:14,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:04:14,363 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:04:14,363 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:04:14,364 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:04:14,364 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:04:14,365 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:04:14,365 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:04:14,366 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:04:14,366 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:04:14,367 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:04:14,367 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:04:14,368 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:04:14,369 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:04:14,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:04:14,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:04:14,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:04:14,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:04:14,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:04:14,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:04:14,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:04:14,373 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:04:14,373 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:04:14,374 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:04:14,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:04:14,375 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:04:14,375 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:04:14,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:04:14,376 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:04:14,376 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:04:14,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:04:14,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:04:14,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:04:14,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:04:14,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:04:14,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:04:14,380 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:04:14,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:04:14,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:04:14,381 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:04:14,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:04:14,382 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_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2024-11-09 05:04:14,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:04:14,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:04:14,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:04:14,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:04:14,724 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:04:14,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i Unable to find full path for "g++" [2024-11-09 05:04:16,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:04:17,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:04:17,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2024-11-09 05:04:17,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/data/b00097833/a7c61d26fda9469aa3399b6384d58545/FLAG1b345f5d3 [2024-11-09 05:04:17,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/data/b00097833/a7c61d26fda9469aa3399b6384d58545 [2024-11-09 05:04:17,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:04:17,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:04:17,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:04:17,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:04:17,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:04:17,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:17" (1/1) ... [2024-11-09 05:04:17,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfe69b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:17, skipping insertion in model container [2024-11-09 05:04:17,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:17" (1/1) ... [2024-11-09 05:04:17,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:04:18,687 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,729 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,734 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,752 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,756 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:04:18,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:04:18,785 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:04:18,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:04:19,105 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:04:19,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19 WrapperNode [2024-11-09 05:04:19,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:04:19,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:04:19,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:04:19,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:04:19,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,215 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 476 [2024-11-09 05:04:19,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:04:19,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:04:19,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:04:19,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:04:19,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:04:19,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:04:19,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:04:19,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:04:19,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (1/1) ... [2024-11-09 05:04:19,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:04:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:19,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:04:19,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_910e8e58-4e57-4af6-863c-6d51814b3f2c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:04:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2024-11-09 05:04:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2024-11-09 05:04:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:04:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:04:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 05:04:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:04:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:04:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:04:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:04:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:04:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:04:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:04:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2024-11-09 05:04:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2024-11-09 05:04:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 05:04:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:04:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:04:19,413 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:04:19,697 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:04:19,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:04:21,055 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:04:21,056 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:04:21,378 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:04:21,379 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-09 05:04:21,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:21 BoogieIcfgContainer [2024-11-09 05:04:21,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:04:21,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:04:21,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:04:21,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:04:21,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:04:17" (1/3) ... [2024-11-09 05:04:21,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecd323c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:21, skipping insertion in model container [2024-11-09 05:04:21,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:19" (2/3) ... [2024-11-09 05:04:21,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecd323c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:21, skipping insertion in model container [2024-11-09 05:04:21,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:21" (3/3) ... [2024-11-09 05:04:21,388 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2024-11-09 05:04:21,408 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:04:21,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 166 error locations. [2024-11-09 05:04:21,408 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:04:21,638 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 05:04:21,691 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 353 places, 397 transitions, 814 flow [2024-11-09 05:04:51,357 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 907667 states, 796299 states have (on average 3.8142557004341335) internal successors, (3037288), 907666 states have internal predecessors, (3037288), 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) [2024-11-09 05:04:51,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:04:51,427 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;@774b1a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:04:51,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 251 error locations. [2024-11-09 05:04:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 907667 states, 796299 states have (on average 3.8142557004341335) internal successors, (3037288), 907666 states have internal predecessors, (3037288), 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) [2024-11-09 05:04:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 05:04:52,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:52,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 05:04:52,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 248 more)] === [2024-11-09 05:04:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1433128, now seen corresponding path program 1 times [2024-11-09 05:04:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472192144] [2024-11-09 05:04:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:52,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472192144] [2024-11-09 05:04:52,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472192144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:04:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54745796] [2024-11-09 05:04:52,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:52,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:04:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:04:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:04:57,337 INFO L87 Difference]: Start difference. First operand has 907667 states, 796299 states have (on average 3.8142557004341335) internal successors, (3037288), 907666 states have internal predecessors, (3037288), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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)