./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/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_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/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_18f1671d-b3bc-4526-b019-7570b981e12e/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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:44:00,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:44:01,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-13 23:44:01,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:44:01,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:44:01,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:44:01,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:44:01,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:44:01,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:44:01,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:44:01,120 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:44:01,120 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:44:01,120 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:44:01,120 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:44:01,120 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:44:01,121 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:44:01,121 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:44:01,122 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:44:01,123 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:44:01,123 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:44:01,123 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:44:01,123 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:44:01,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 23:44:01,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 23:44:01,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:44:01,124 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:44:01,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:44:01,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:44:01,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:44:01,125 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 23:44:01,125 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 23:44:01,125 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:44:01,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:44:01,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:44:01,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:44:01,127 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:44:01,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:44:01,128 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_18f1671d-b3bc-4526-b019-7570b981e12e/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 -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2024-11-13 23:44:01,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:44:01,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:44:01,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:44:01,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:44:01,518 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:44:01,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i Unable to find full path for "g++" [2024-11-13 23:44:03,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:44:04,205 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:44:04,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2024-11-13 23:44:04,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/data/92edcf8be/f4d480c489ce422a91305c9f2e750078/FLAG88103bbd0 [2024-11-13 23:44:04,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/data/92edcf8be/f4d480c489ce422a91305c9f2e750078 [2024-11-13 23:44:04,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:44:04,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:44:04,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:44:04,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:44:04,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:44:04,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:44:04" (1/1) ... [2024-11-13 23:44:04,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfe2769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:04, skipping insertion in model container [2024-11-13 23:44:04,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:44:04" (1/1) ... [2024-11-13 23:44:04,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:44:04,961 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:04,970 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:05,005 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:05,009 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:05,017 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:05,019 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 23:44:05,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:44:05,034 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:44:05,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:44:05,279 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:44:05,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05 WrapperNode [2024-11-13 23:44:05,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:44:05,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:44:05,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:44:05,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:44:05,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,375 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 476 [2024-11-13 23:44:05,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:44:05,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:44:05,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:44:05,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:44:05,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:44:05,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:44:05,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:44:05,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:44:05,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (1/1) ... [2024-11-13 23:44:05,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:44:05,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:44:05,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:44:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f1671d-b3bc-4526-b019-7570b981e12e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2024-11-13 23:44:05,535 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:44:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:44:05,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:44:05,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:44:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:44:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2024-11-13 23:44:05,538 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2024-11-13 23:44:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 23:44:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:44:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:44:05,540 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 23:44:05,805 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:44:05,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:44:07,287 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 23:44:07,287 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:44:07,801 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:44:07,804 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-13 23:44:07,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:44:07 BoogieIcfgContainer [2024-11-13 23:44:07,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:44:07,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:44:07,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:44:07,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:44:07,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:44:04" (1/3) ... [2024-11-13 23:44:07,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2a3304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:44:07, skipping insertion in model container [2024-11-13 23:44:07,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:05" (2/3) ... [2024-11-13 23:44:07,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2a3304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:44:07, skipping insertion in model container [2024-11-13 23:44:07,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:44:07" (3/3) ... [2024-11-13 23:44:07,820 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2024-11-13 23:44:07,840 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:44:07,843 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 335 locations, 1 initial locations, 13 loop locations, and 166 error locations. [2024-11-13 23:44:07,843 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 23:44:08,160 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 23:44:08,220 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 341 places, 379 transitions, 778 flow [2024-11-13 23:44:34,265 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 822421 states, 711053 states have (on average 3.825572777275393) internal successors, (2720185), 822420 states have internal predecessors, (2720185), 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) [2024-11-13 23:44:34,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:44:34,316 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;@1c71219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:44:34,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 251 error locations. [2024-11-13 23:44:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 822421 states, 711053 states have (on average 3.825572777275393) internal successors, (2720185), 822420 states have internal predecessors, (2720185), 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) [2024-11-13 23:44:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 23:44:36,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:44:36,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 23:44:36,939 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)] === [2024-11-13 23:44:36,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:44:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1433375, now seen corresponding path program 1 times [2024-11-13 23:44:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:44:36,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059911181] [2024-11-13 23:44:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:44:36,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:44:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:44:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:44:37,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:44:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059911181] [2024-11-13 23:44:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059911181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:44:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:44:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 23:44:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001821588] [2024-11-13 23:44:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:44:37,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:44:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:44:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:44:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:44:39,060 INFO L87 Difference]: Start difference. First operand has 822421 states, 711053 states have (on average 3.825572777275393) internal successors, (2720185), 822420 states have internal predecessors, (2720185), 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)