./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/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_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:39,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:40,052 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:23:40,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:40,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:40,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:40,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:40,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:40,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:40,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:40,099 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:40,100 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:40,100 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:40,100 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:40,101 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:40,101 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:40,101 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:40,102 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:40,102 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:40,102 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:40,107 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:40,107 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:40,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:40,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:40,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:23:40,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:40,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:23:40,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:40,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:40,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:40,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:40,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:40,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:23:40,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:40,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:40,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:40,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:40,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:40,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:40,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:40,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:40,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:40,117 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:40,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:40,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:40,118 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:40,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:40,119 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_4a11db20-2b1c-4f04-824b-e179eda768f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf [2024-11-02 11:23:40,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:40,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:40,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:40,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:40,469 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:40,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c Unable to find full path for "g++" [2024-11-02 11:23:42,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:42,855 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:42,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2024-11-02 11:23:42,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/data/8f632335f/85cdd25326ad4ab88b44755dba1368b7/FLAG030f87e07 [2024-11-02 11:23:42,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/data/8f632335f/85cdd25326ad4ab88b44755dba1368b7 [2024-11-02 11:23:42,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:42,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:42,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:42,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:42,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:42,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:42" (1/1) ... [2024-11-02 11:23:42,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c889eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:42, skipping insertion in model container [2024-11-02 11:23:42,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:42" (1/1) ... [2024-11-02 11:23:42,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:43,221 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2024-11-02 11:23:43,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:43,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:43,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok3.i","-S") [47] [2024-11-02 11:23:43,711 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2024-11-02 11:23:43,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:44,015 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:44,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44 WrapperNode [2024-11-02 11:23:44,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:44,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:44,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:44,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:44,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,397 INFO L138 Inliner]: procedures = 63, calls = 2139, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4510 [2024-11-02 11:23:44,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:44,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:44,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:44,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:44,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:44,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:44,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:44,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:44,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (1/1) ... [2024-11-02 11:23:44,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:44,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:44,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:44,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a11db20-2b1c-4f04-824b-e179eda768f1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:23:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-02 11:23:44,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-02 11:23:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-02 11:23:44,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-02 11:23:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 11:23:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:23:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-02 11:23:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-02 11:23:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-02 11:23:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-02 11:23:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2024-11-02 11:23:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2024-11-02 11:23:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-02 11:23:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-02 11:23:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:23:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-02 11:23:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-02 11:23:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-02 11:23:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-02 11:23:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-02 11:23:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-02 11:23:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-02 11:23:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-02 11:23:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:23:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-02 11:23:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-02 11:23:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:23:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-02 11:23:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-02 11:23:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-02 11:23:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-02 11:23:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2024-11-02 11:23:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2024-11-02 11:23:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:23:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:23:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:23:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-02 11:23:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-02 11:23:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-02 11:23:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-02 11:23:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-02 11:23:44,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-02 11:23:45,316 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:45,319 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:54,218 INFO L? ?]: Removed 224 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:54,219 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:54,685 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:54,688 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 11:23:54,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:54 BoogieIcfgContainer [2024-11-02 11:23:54,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:54,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:54,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:54,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:54,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:42" (1/3) ... [2024-11-02 11:23:54,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72516f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:54, skipping insertion in model container [2024-11-02 11:23:54,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:44" (2/3) ... [2024-11-02 11:23:54,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72516f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:54, skipping insertion in model container [2024-11-02 11:23:54,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:54" (3/3) ... [2024-11-02 11:23:54,699 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M1.c [2024-11-02 11:23:54,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:54,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:23:54,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:54,862 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=LoopHeads, 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;@6e529a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:54,862 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:23:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 1236 states, 761 states have (on average 1.2772667542706964) internal successors, (972), 792 states have internal predecessors, (972), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2024-11-02 11:23:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-11-02 11:23:54,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:54,950 INFO L215 NwaCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:54,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:54,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash 824318677, now seen corresponding path program 1 times [2024-11-02 11:23:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107363692] [2024-11-02 11:23:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:54,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms