./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.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_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/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_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/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_99504018-888f-434c-be25-145e4b1a90ba/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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:35,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:36,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:26:36,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:36,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:36,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:36,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:36,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:36,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:36,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:36,149 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:36,150 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:36,151 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:36,153 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:36,154 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:36,154 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:36,155 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:36,155 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:36,155 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:36,156 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:36,156 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:36,160 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:36,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:36,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:36,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:26:36,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:36,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:26:36,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:36,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:36,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:36,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:36,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:36,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:26:36,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:36,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:36,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:36,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:36,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:36,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:36,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:36,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:36,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:36,170 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:36,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:36,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:36,171 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:36,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:36,172 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_99504018-888f-434c-be25-145e4b1a90ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2024-11-02 12:26:36,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:36,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:36,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:36,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:36,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:36,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c Unable to find full path for "g++" [2024-11-02 12:26:38,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:38,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:38,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-02 12:26:38,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/data/b272c07e7/1652477c07894d92ae60a3d6f5eb4e59/FLAG274cb6a2c [2024-11-02 12:26:38,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/data/b272c07e7/1652477c07894d92ae60a3d6f5eb4e59 [2024-11-02 12:26:38,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:38,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:38,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:38,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:38,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:38,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:38" (1/1) ... [2024-11-02 12:26:38,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e18b115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:38, skipping insertion in model container [2024-11-02 12:26:38,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:38" (1/1) ... [2024-11-02 12:26:39,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:39,264 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_99504018-888f-434c-be25-145e4b1a90ba/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-02 12:26:39,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:39,738 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:39,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-02 12:26:39,756 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_99504018-888f-434c-be25-145e4b1a90ba/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-02 12:26:39,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:40,039 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:40,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40 WrapperNode [2024-11-02 12:26:40,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:40,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:40,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:40,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:40,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,349 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3995 [2024-11-02 12:26:40,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:40,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:40,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:40,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:40,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:40,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:40,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:40,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:40,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (1/1) ... [2024-11-02 12:26:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:40,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:40,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99504018-888f-434c-be25-145e4b1a90ba/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-02 12:26:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-02 12:26:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-02 12:26:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-02 12:26:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:26:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-02 12:26:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-02 12:26:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-02 12:26:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-02 12:26:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-02 12:26:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-02 12:26:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:26:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-02 12:26:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-02 12:26:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-02 12:26:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-02 12:26:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-02 12:26:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-02 12:26:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-02 12:26:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-02 12:26:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:26:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-02 12:26:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-02 12:26:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:26:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-02 12:26:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-02 12:26:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:26:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:26:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-02 12:26:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-02 12:26:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-02 12:26:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-02 12:26:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-02 12:26:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-02 12:26:41,285 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:41,288 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:49,330 INFO L? ?]: Removed 193 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:49,331 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:49,601 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:49,604 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:26:49,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:49 BoogieIcfgContainer [2024-11-02 12:26:49,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:49,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:49,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:49,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:49,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:38" (1/3) ... [2024-11-02 12:26:49,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b1e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:49, skipping insertion in model container [2024-11-02 12:26:49,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:40" (2/3) ... [2024-11-02 12:26:49,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b1e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:49, skipping insertion in model container [2024-11-02 12:26:49,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:49" (3/3) ... [2024-11-02 12:26:49,616 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2024-11-02 12:26:49,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:49,636 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:49,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:49,768 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;@7e8168ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:49,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 1097 states, 688 states have (on average 1.2979651162790697) internal successors, (893), 720 states have internal predecessors, (893), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-02 12:26:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-11-02 12:26:49,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:49,857 INFO L215 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:49,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:49,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2068592125, now seen corresponding path program 1 times [2024-11-02 12:26:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986885756] [2024-11-02 12:26:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms