./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh --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 17a6dd75e60112a7f7af78ca3548f5d14d93f1e305c1fc4e0acf996889e6f17b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:38:50,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:38:50,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:38:50,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:38:50,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:38:50,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:38:50,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:38:50,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:38:50,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:38:50,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:38:50,430 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:38:50,431 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:38:50,431 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:38:50,432 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:38:50,432 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:38:50,433 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:38:50,433 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:38:50,434 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:38:50,434 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:38:50,435 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:38:50,435 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:38:50,438 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:38:50,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:38:50,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:38:50,439 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:38:50,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:38:50,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:38:50,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:38:50,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:38:50,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:38:50,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:38:50,442 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:38:50,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:38:50,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:38:50,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:38:50,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:38:50,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:38:50,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:38:50,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:38:50,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:38:50,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:38:50,445 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:38:50,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:38:50,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:38:50,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:38:50,445 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:38:50,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:38:50,446 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_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17a6dd75e60112a7f7af78ca3548f5d14d93f1e305c1fc4e0acf996889e6f17b [2023-12-02 19:38:50,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:38:50,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:38:50,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:38:50,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:38:50,680 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:38:50,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2023-12-02 19:38:53,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:38:53,931 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:38:53,932 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2023-12-02 19:38:53,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/data/a67f9d236/58b620120e2a4cb695e3b8d94e66c8c2/FLAG43fd91cce [2023-12-02 19:38:54,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/data/a67f9d236/58b620120e2a4cb695e3b8d94e66c8c2 [2023-12-02 19:38:54,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:38:54,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:38:54,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:38:54,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:38:54,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:38:54,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:38:54" (1/1) ... [2023-12-02 19:38:54,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b76868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:54, skipping insertion in model container [2023-12-02 19:38:54,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:38:54" (1/1) ... [2023-12-02 19:38:54,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:38:54,383 WARN L240 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_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c[2275,2288] [2023-12-02 19:38:55,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:38:55,353 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:38:55,361 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok3.i","-S") [51] [2023-12-02 19:38:55,368 WARN L240 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_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c[2275,2288] [2023-12-02 19:38:56,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:38:56,313 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:38:56,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56 WrapperNode [2023-12-02 19:38:56,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:38:56,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:38:56,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:38:56,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:38:56,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:56,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:57,903 INFO L138 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 41393 [2023-12-02 19:38:57,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:38:57,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:38:57,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:38:57,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:38:57,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:57,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:58,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:58,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:58,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:59,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:59,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:59,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:59,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:38:59,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:38:59,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:38:59,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:38:59,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (1/1) ... [2023-12-02 19:38:59,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:38:59,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:38:59,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:38:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493fc5d9-e6ce-48f3-9ca3-0b3d21157b5c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:38:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:38:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-12-02 19:38:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-12-02 19:38:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-12-02 19:38:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-12-02 19:38:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:38:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-12-02 19:38:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-12-02 19:38:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-12-02 19:38:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-12-02 19:38:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2023-12-02 19:38:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2023-12-02 19:38:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-12-02 19:38:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-12-02 19:38:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:38:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-12-02 19:38:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-12-02 19:38:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-12-02 19:38:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-12-02 19:38:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-12-02 19:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-12-02 19:38:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-12-02 19:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-12-02 19:38:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:38:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-12-02 19:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-12-02 19:38:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-02 19:38:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-02 19:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-12-02 19:38:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-12-02 19:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-12-02 19:38:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-12-02 19:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:38:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:38:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-12-02 19:38:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-12-02 19:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-12-02 19:38:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-12-02 19:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-12-02 19:38:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-12-02 19:39:01,326 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:39:01,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:39:43,942 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:39:45,007 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:39:45,007 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:39:45,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:45 BoogieIcfgContainer [2023-12-02 19:39:45,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:39:45,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:39:45,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:39:45,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:39:45,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:38:54" (1/3) ... [2023-12-02 19:39:45,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21461310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:45, skipping insertion in model container [2023-12-02 19:39:45,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:56" (2/3) ... [2023-12-02 19:39:45,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21461310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:45, skipping insertion in model container [2023-12-02 19:39:45,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:45" (3/3) ... [2023-12-02 19:39:45,021 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M4.c [2023-12-02 19:39:45,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:39:45,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:39:45,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:39:45,395 INFO L357 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, mHoare=true, 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;@4cd92a62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:39:45,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:39:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 12435 states, 8072 states have (on average 1.3119425173439048) internal successors, (10590), 8184 states have internal predecessors, (10590), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2023-12-02 19:39:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4366 [2023-12-02 19:39:45,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:45,871 INFO L195 NwaCegarLoop]: trace histogram [444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:45,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1762527232, now seen corresponding path program 1 times [2023-12-02 19:39:45,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:45,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341734634] [2023-12-02 19:39:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms