./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.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_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/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_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/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_2af95cb9-3c8b-4b58-a56d-20435f29d580/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 f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:39:13,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:39:14,058 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-13 23:39:14,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:39:14,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:39:14,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:39:14,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:39:14,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:39:14,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:39:14,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:39:14,121 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:39:14,121 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:39:14,121 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:39:14,122 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:39:14,122 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:39:14,122 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:39:14,122 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:39:14,123 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:39:14,123 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:39:14,123 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:39:14,123 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:39:14,123 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:39:14,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 23:39:14,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 23:39:14,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:39:14,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:39:14,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:39:14,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:39:14,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:39:14,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:39:14,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:39:14,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:39:14,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:39:14,128 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:39:14,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:39:14,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:39:14,128 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:39:14,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:39:14,130 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_2af95cb9-3c8b-4b58-a56d-20435f29d580/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 -> f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e [2024-11-13 23:39:14,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:39:14,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:39:14,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:39:14,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:39:14,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:39:14,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i Unable to find full path for "g++" [2024-11-13 23:39:16,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:39:17,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:39:17,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-13 23:39:17,204 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/data/5c636445f/3169c243465c439890510f44ef0e8248/FLAGf1af415fa [2024-11-13 23:39:17,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/data/5c636445f/3169c243465c439890510f44ef0e8248 [2024-11-13 23:39:17,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:39:17,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:39:17,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:39:17,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:39:17,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:39:17,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:39:17" (1/1) ... [2024-11-13 23:39:17,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f9ed81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:17, skipping insertion in model container [2024-11-13 23:39:17,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:39:17" (1/1) ... [2024-11-13 23:39:17,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:39:17,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:39:17,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:39:18,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:39:18,098 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:39:18,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18 WrapperNode [2024-11-13 23:39:18,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:39:18,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:39:18,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:39:18,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:39:18,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,192 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 829 [2024-11-13 23:39:18,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:39:18,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:39:18,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:39:18,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:39:18,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:39:18,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:39:18,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:39:18,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:39:18,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (1/1) ... [2024-11-13 23:39:18,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:39:18,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:18,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:39:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2af95cb9-3c8b-4b58-a56d-20435f29d580/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:39:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:39:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 23:39:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 23:39:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:39:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 23:39:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:39:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:39:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:39:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:39:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 23:39:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:39:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:39:18,355 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 23:39:18,558 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:39:18,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:39:20,322 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 23:39:20,322 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:39:37,446 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:39:37,447 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 23:39:37,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:39:37 BoogieIcfgContainer [2024-11-13 23:39:37,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:39:37,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:39:37,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:39:37,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:39:37,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:39:17" (1/3) ... [2024-11-13 23:39:37,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c352ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:39:37, skipping insertion in model container [2024-11-13 23:39:37,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:39:18" (2/3) ... [2024-11-13 23:39:37,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c352ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:39:37, skipping insertion in model container [2024-11-13 23:39:37,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:39:37" (3/3) ... [2024-11-13 23:39:37,468 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2024-11-13 23:39:37,491 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:39:37,493 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas_longer-2.i that has 2 procedures, 74 locations, 1 initial locations, 3 loop locations, and 40 error locations. [2024-11-13 23:39:37,494 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 23:39:37,922 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 23:39:37,977 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 82 transitions, 168 flow [2024-11-13 23:39:38,071 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 472 states, 352 states have (on average 2.6136363636363638) internal successors, (920), 471 states have internal predecessors, (920), 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 23:39:38,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:39:38,133 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;@591982ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:39:38,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-13 23:39:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 472 states, 352 states have (on average 2.6136363636363638) internal successors, (920), 471 states have internal predecessors, (920), 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 23:39:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 23:39:38,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:38,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 23:39:38,149 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 23:39:38,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1959995, now seen corresponding path program 1 times [2024-11-13 23:39:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:38,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387081486] [2024-11-13 23:39:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:38,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms