./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:34:49,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:34:49,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:34:49,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:34:49,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:34:49,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:34:49,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:34:49,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:34:49,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:34:49,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:34:49,862 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:34:49,863 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:34:49,864 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:34:49,870 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:34:49,870 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:34:49,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:34:49,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:34:49,871 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:34:49,872 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:34:49,872 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:34:49,873 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:34:49,875 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:34:49,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:34:49,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:34:49,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:34:49,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:34:49,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:34:49,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:34:49,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:34:49,879 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:34:49,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:34:49,880 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:34:49,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:34:49,881 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:34:49,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:34:49,882 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:34:49,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:34:49,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:34:49,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:34:49,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:34:49,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:34:49,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:49,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:34:49,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:34:49,886 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:34:49,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:34:49,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:34:49,887 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:34:49,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:34:49,887 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_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2024-11-02 12:34:50,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:34:50,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:34:50,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:34:50,222 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:34:50,223 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:34:50,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i Unable to find full path for "g++" [2024-11-02 12:34:52,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:34:52,686 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:34:52,687 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2024-11-02 12:34:52,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/data/03a542bee/7029db5ac1b44b02b40bd8a43d179975/FLAGaf4c004e8 [2024-11-02 12:34:53,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/data/03a542bee/7029db5ac1b44b02b40bd8a43d179975 [2024-11-02 12:34:53,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:34:53,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:34:53,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:53,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:34:53,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:34:53,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a24f177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53, skipping insertion in model container [2024-11-02 12:34:53,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:34:53,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:53,686 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:34:53,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:53,819 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:34:53,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53 WrapperNode [2024-11-02 12:34:53,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:53,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:53,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:34:53,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:34:53,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,879 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-02 12:34:53,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:53,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:34:53,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:34:53,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:34:53,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:34:53,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:34:53,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:34:53,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:34:53,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (1/1) ... [2024-11-02 12:34:53,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:53,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:34:53,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:34:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:34:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-02 12:34:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:34:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-02 12:34:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-02 12:34:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:34:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-02 12:34:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:34:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:34:54,015 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:34:54,216 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:34:54,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:34:54,428 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:34:54,429 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:34:54,564 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:34:54,565 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:34:54,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:54 BoogieIcfgContainer [2024-11-02 12:34:54,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:34:54,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:34:54,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:34:54,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:34:54,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:34:53" (1/3) ... [2024-11-02 12:34:54,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b088525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:54, skipping insertion in model container [2024-11-02 12:34:54,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:53" (2/3) ... [2024-11-02 12:34:54,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b088525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:54, skipping insertion in model container [2024-11-02 12:34:54,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:54" (3/3) ... [2024-11-02 12:34:54,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2024-11-02 12:34:54,596 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:34:54,597 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-02 12:34:54,597 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:34:54,646 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-02 12:34:54,681 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 46 flow [2024-11-02 12:34:54,708 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 98 states, 87 states have (on average 2.0) internal successors, (174), 97 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:54,751 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:34:54,761 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;@7ef0496, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:34:54,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-02 12:34:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 87 states have (on average 2.0) internal successors, (174), 97 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:34:54,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:54,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:34:54,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-02 12:34:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash -110615758, now seen corresponding path program 1 times [2024-11-02 12:34:54,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:54,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768724011] [2024-11-02 12:34:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:55,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768724011] [2024-11-02 12:34:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768724011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:55,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:34:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392602388] [2024-11-02 12:34:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:55,262 INFO L87 Difference]: Start difference. First operand has 98 states, 87 states have (on average 2.0) internal successors, (174), 97 states have internal predecessors, (174), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:55,338 INFO L93 Difference]: Finished difference Result 98 states and 174 transitions. [2024-11-02 12:34:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-02 12:34:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:55,356 INFO L225 Difference]: With dead ends: 98 [2024-11-02 12:34:55,356 INFO L226 Difference]: Without dead ends: 87 [2024-11-02 12:34:55,360 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 [2024-11-02 12:34:55,366 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:55,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-02 12:34:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-02 12:34:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.9125) internal successors, (153), 86 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 153 transitions. [2024-11-02 12:34:55,429 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 153 transitions. Word has length 6 [2024-11-02 12:34:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:55,430 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 153 transitions. [2024-11-02 12:34:55,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 153 transitions. [2024-11-02 12:34:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:34:55,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:55,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:34:55,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:34:55,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-02 12:34:55,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash -110615757, now seen corresponding path program 1 times [2024-11-02 12:34:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209553867] [2024-11-02 12:34:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:55,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209553867] [2024-11-02 12:34:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209553867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:55,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:55,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:34:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135779939] [2024-11-02 12:34:55,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:55,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:55,649 INFO L87 Difference]: Start difference. First operand 87 states and 153 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:55,685 INFO L93 Difference]: Finished difference Result 87 states and 153 transitions. [2024-11-02 12:34:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-02 12:34:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:55,688 INFO L225 Difference]: With dead ends: 87 [2024-11-02 12:34:55,688 INFO L226 Difference]: Without dead ends: 72 [2024-11-02 12:34:55,689 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 [2024-11-02 12:34:55,693 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:55,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-02 12:34:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-02 12:34:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.8115942028985508) internal successors, (125), 71 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 125 transitions. [2024-11-02 12:34:55,707 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 125 transitions. Word has length 6 [2024-11-02 12:34:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:55,707 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 125 transitions. [2024-11-02 12:34:55,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 125 transitions. [2024-11-02 12:34:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:34:55,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:55,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:34:55,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:34:55,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-02 12:34:55,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash -110815165, now seen corresponding path program 1 times [2024-11-02 12:34:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:55,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575078930] [2024-11-02 12:34:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:55,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575078930] [2024-11-02 12:34:55,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575078930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:55,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:55,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983357565] [2024-11-02 12:34:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:55,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:55,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:55,858 INFO L87 Difference]: Start difference. First operand 72 states and 125 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:55,989 INFO L93 Difference]: Finished difference Result 72 states and 125 transitions. [2024-11-02 12:34:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:34:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-02 12:34:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:55,991 INFO L225 Difference]: With dead ends: 72 [2024-11-02 12:34:55,992 INFO L226 Difference]: Without dead ends: 65 [2024-11-02 12:34:55,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:55,993 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:55,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-02 12:34:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-02 12:34:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 64 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 112 transitions. [2024-11-02 12:34:56,026 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 112 transitions. Word has length 6 [2024-11-02 12:34:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:56,027 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 112 transitions. [2024-11-02 12:34:56,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 112 transitions. [2024-11-02 12:34:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:34:56,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:56,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:34:56,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:34:56,031 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-02 12:34:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash -110815164, now seen corresponding path program 1 times [2024-11-02 12:34:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843378438] [2024-11-02 12:34:56,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:56,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:56,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843378438] [2024-11-02 12:34:56,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843378438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:56,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:56,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305082970] [2024-11-02 12:34:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:56,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:56,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:56,199 INFO L87 Difference]: Start difference. First operand 65 states and 112 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:56,255 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2024-11-02 12:34:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:34:56,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-02 12:34:56,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:56,257 INFO L225 Difference]: With dead ends: 65 [2024-11-02 12:34:56,257 INFO L226 Difference]: Without dead ends: 58 [2024-11-02 12:34:56,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:56,259 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:56,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-02 12:34:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-02 12:34:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.736842105263158) internal successors, (99), 57 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 99 transitions. [2024-11-02 12:34:56,268 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 99 transitions. Word has length 6 [2024-11-02 12:34:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:56,269 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 99 transitions. [2024-11-02 12:34:56,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 99 transitions. [2024-11-02 12:34:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:34:56,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:56,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:56,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:34:56,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-02 12:34:56,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1535346725, now seen corresponding path program 1 times [2024-11-02 12:34:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428330396] [2024-11-02 12:34:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:56,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428330396] [2024-11-02 12:34:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428330396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:34:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000767175] [2024-11-02 12:34:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:56,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:56,309 INFO L87 Difference]: Start difference. First operand 58 states and 99 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:56,331 INFO L93 Difference]: Finished difference Result 58 states and 99 transitions. [2024-11-02 12:34:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-02 12:34:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:56,333 INFO L225 Difference]: With dead ends: 58 [2024-11-02 12:34:56,333 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:34:56,333 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 [2024-11-02 12:34:56,335 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:56,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:34:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:34:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:34:56,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2024-11-02 12:34:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:56,338 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:34:56,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:34:56,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:34:56,341 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2024-11-02 12:34:56,342 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-02 12:34:56,342 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-02 12:34:56,343 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-02 12:34:56,343 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-02 12:34:56,343 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-02 12:34:56,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-02 12:34:56,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2024-11-02 12:34:56,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:34:56,348 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:34:56,353 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-02 12:34:56,354 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:34:56,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:34:56 BasicIcfg [2024-11-02 12:34:56,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:34:56,359 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:34:56,359 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:34:56,359 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:34:56,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:54" (3/4) ... [2024-11-02 12:34:56,362 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:34:56,366 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-02 12:34:56,370 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-02 12:34:56,371 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:34:56,371 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-02 12:34:56,371 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:34:56,477 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:34:56,478 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:34:56,479 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:34:56,480 INFO L158 Benchmark]: Toolchain (without parser) took 3453.17ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 108.0MB in the beginning and 115.2MB in the end (delta: -7.2MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,480 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:34:56,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 792.42ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 85.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.00ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,481 INFO L158 Benchmark]: Boogie Preprocessor took 36.53ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:34:56,485 INFO L158 Benchmark]: RCFGBuilder took 648.23ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.6MB in the beginning and 144.0MB in the end (delta: -61.4MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,486 INFO L158 Benchmark]: TraceAbstraction took 1789.77ms. Allocated memory is still 182.5MB. Free memory was 142.7MB in the beginning and 119.4MB in the end (delta: 23.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,486 INFO L158 Benchmark]: Witness Printer took 120.24ms. Allocated memory is still 182.5MB. Free memory was 119.4MB in the beginning and 115.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:34:56,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 792.42ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 85.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.00ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.53ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 648.23ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.6MB in the beginning and 144.0MB in the end (delta: -61.4MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1789.77ms. Allocated memory is still 182.5MB. Free memory was 142.7MB in the beginning and 119.4MB in the end (delta: 23.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Witness Printer took 120.24ms. Allocated memory is still 182.5MB. Free memory was 119.4MB in the beginning and 115.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 81 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-02 12:34:56,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b669d9ef-ac7d-4108-8dc9-9ad137bb1ffe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE