/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/rekcba_nxt.2.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:19:38,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:19:38,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:19:38,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:19:38,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:19:38,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:19:38,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:19:38,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:19:38,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:19:38,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:19:38,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:19:38,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:19:38,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:19:38,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:19:38,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:19:38,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:19:38,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:19:38,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:19:38,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:19:38,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:19:38,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:19:38,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:19:38,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:19:38,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:19:38,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:19:38,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:19:38,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:19:38,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:19:38,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:19:38,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:19:38,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:19:38,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:19:38,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:19:38,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:19:38,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:19:38,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:19:38,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:19:38,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:19:38,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:19:38,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:19:38,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:19:38,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:19:38,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:19:38,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:19:38,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:19:38,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:19:38,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:19:38,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:19:38,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:19:38,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:19:38,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:19:38,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:19:38,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:19:38,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:19:38,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:19:38,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:19:38,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:19:38,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:19:38,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:19:38,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:19:38,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:19:38,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:19:38,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:19:38,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:19:38,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:19:38,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:19:38,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:19:38,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:19:38,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:19:38,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:19:38,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:19:38,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:19:39,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:19:39,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:19:39,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:19:39,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:19:39,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:19:39,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/rekcba_nxt.2.M4-2.c [2020-10-27 06:19:39,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d61dc99c5/f87e87f26a6c4ef08b69e5e272282e96/FLAGfb1547718 [2020-10-27 06:19:40,334 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:19:40,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/rekcba_nxt.2.M4-2.c [2020-10-27 06:19:40,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d61dc99c5/f87e87f26a6c4ef08b69e5e272282e96/FLAGfb1547718 [2020-10-27 06:19:40,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d61dc99c5/f87e87f26a6c4ef08b69e5e272282e96 [2020-10-27 06:19:40,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:19:40,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:19:40,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:19:40,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:19:40,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:19:40,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:19:40" (1/1) ... [2020-10-27 06:19:40,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30323cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:40, skipping insertion in model container [2020-10-27 06:19:40,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:19:40" (1/1) ... [2020-10-27 06:19:40,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:19:40,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:19:42,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:19:42,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:19:43,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:19:43,643 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:19:43,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43 WrapperNode [2020-10-27 06:19:43,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:19:43,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:19:43,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:19:43,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:19:43,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:43,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:44,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:44,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:45,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:45,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:45,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... [2020-10-27 06:19:45,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:19:45,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:19:45,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:19:45,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:19:45,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:19:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:19:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:19:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:19:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:19:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 06:19:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2020-10-27 06:19:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2020-10-27 06:19:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2020-10-27 06:19:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_assert_i0 [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_check_assumptions [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_check_assertions [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __main [2020-10-27 06:19:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_observer_obstacle_flag [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2020-10-27 06:19:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2020-10-27 06:19:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2020-10-27 06:19:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2020-10-27 06:19:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2020-10-27 06:19:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2020-10-27 06:19:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2020-10-27 06:19:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:19:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_assert_i0 [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2020-10-27 06:19:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cpu_lock [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cpu_unlock [2020-10-27 06:19:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 06:19:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_observer_obstacle_flag [2020-10-27 06:19:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2020-10-27 06:19:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2020-10-27 06:19:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2020-10-27 06:19:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_check_assumptions [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_check_assertions [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __main [2020-10-27 06:19:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:19:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:19:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:19:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:20:26,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:20:26,573 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 06:20:26,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:20:26 BoogieIcfgContainer [2020-10-27 06:20:26,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:20:26,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:20:26,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:20:26,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:20:26,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:19:40" (1/3) ... [2020-10-27 06:20:26,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18bc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:20:26, skipping insertion in model container [2020-10-27 06:20:26,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:19:43" (2/3) ... [2020-10-27 06:20:26,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18bc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:20:26, skipping insertion in model container [2020-10-27 06:20:26,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:20:26" (3/3) ... [2020-10-27 06:20:26,598 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2020-10-27 06:20:26,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:20:26,623 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:20:26,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:20:26,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:20:26,710 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:20:26,710 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:20:26,710 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:20:26,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:20:26,711 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:20:26,711 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:20:26,711 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:20:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 12576 states. [2020-10-27 06:20:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5283 [2020-10-27 06:20:28,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:20:28,111 INFO L422 BasicCegarLoop]: trace histogram [444, 444, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:20:28,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:20:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:20:28,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1357956405, now seen corresponding path program 1 times [2020-10-27 06:20:28,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:20:28,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546190498] [2020-10-27 06:20:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:22:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat