./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 cf1a7837 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_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/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_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX --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 0.2.3-dev-cf1a783 [2023-11-12 00:15:01,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:15:01,335 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:15:01,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:15:01,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:15:01,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:15:01,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:15:01,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:15:01,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:15:01,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:15:01,401 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:15:01,402 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:15:01,402 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:15:01,404 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:15:01,404 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:15:01,405 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:15:01,405 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:15:01,406 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:15:01,406 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:15:01,407 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:15:01,407 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:15:01,408 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:15:01,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:15:01,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:15:01,410 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:15:01,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:15:01,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:15:01,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:15:01,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:15:01,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:15:01,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:15:01,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:15:01,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:15:01,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:15:01,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:15:01,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:15:01,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:01,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:15:01,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:15:01,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:15:01,424 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:15:01,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:15:01,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:15:01,424 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:15:01,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:15:01,425 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_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2023-11-12 00:15:01,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:15:01,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:15:01,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:15:01,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:15:01,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:15:01,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2023-11-12 00:15:04,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:05,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:05,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2023-11-12 00:15:05,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/data/e1a767fd5/853282db5a1141aeb803e8dcee204352/FLAG670e5e3c0 [2023-11-12 00:15:05,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/data/e1a767fd5/853282db5a1141aeb803e8dcee204352 [2023-11-12 00:15:05,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:05,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:05,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:05,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:05,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:05,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:05" (1/1) ... [2023-11-12 00:15:05,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d6bd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:05, skipping insertion in model container [2023-11-12 00:15:05,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:05" (1/1) ... [2023-11-12 00:15:05,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:05,783 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_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2023-11-12 00:15:06,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:06,305 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:06,319 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2023-11-12 00:15:06,346 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_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2023-11-12 00:15:06,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:06,746 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:06,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06 WrapperNode [2023-11-12 00:15:06,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:06,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:06,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:06,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:06,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:06,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,028 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3802 [2023-11-12 00:15:07,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:07,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:07,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:07,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:07,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:07,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:07,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:07,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:07,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (1/1) ... [2023-11-12 00:15:07,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:07,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:07,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3de1e6-2966-4d60-8668-26c8fdc47b9f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-12 00:15:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-12 00:15:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:15:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:15:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:15:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-12 00:15:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-12 00:15:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-12 00:15:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-12 00:15:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-12 00:15:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-12 00:15:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:15:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-12 00:15:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-12 00:15:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-12 00:15:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-12 00:15:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:15:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:15:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:15:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:15:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:15:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-12 00:15:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-12 00:15:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:15:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-12 00:15:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-12 00:15:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:15:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:15:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:15:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-12 00:15:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-12 00:15:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-12 00:15:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-12 00:15:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:15:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:15:07,867 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:07,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:15,992 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:16,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:16,223 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:15:16,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:16 BoogieIcfgContainer [2023-11-12 00:15:16,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:16,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:16,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:16,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:16,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:05" (1/3) ... [2023-11-12 00:15:16,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755c8276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:16, skipping insertion in model container [2023-11-12 00:15:16,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:06" (2/3) ... [2023-11-12 00:15:16,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755c8276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:16, skipping insertion in model container [2023-11-12 00:15:16,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:16" (3/3) ... [2023-11-12 00:15:16,243 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2023-11-12 00:15:16,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:16,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:15:16,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:16,394 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;@184ef17b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:16,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:15:16,408 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) [2023-11-12 00:15:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-11-12 00:15:16,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:16,491 INFO L195 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] [2023-11-12 00:15:16,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:16,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 179167922, now seen corresponding path program 1 times [2023-11-12 00:15:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236215710] [2023-11-12 00:15:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms