/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:20:40,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:20:40,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:20:40,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:20:40,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:20:40,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:20:40,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:20:40,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:20:40,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:20:40,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:20:40,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:20:40,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:20:40,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:20:40,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:20:40,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:20:40,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:20:40,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:20:40,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:20:40,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:20:40,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:20:40,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:20:40,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:20:40,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:20:40,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:20:40,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:20:40,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:20:40,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:20:40,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:20:40,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:20:40,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:20:40,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:20:40,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:20:40,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:20:40,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:20:40,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:20:40,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:20:40,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:20:40,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:20:40,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:20:40,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:20:40,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:20:40,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:20:40,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:20:40,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:20:40,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:20:40,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:20:40,527 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:20:40,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:20:40,528 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:20:40,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:20:40,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:20:40,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:20:40,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:20:40,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:20:40,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:20:40,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:20:40,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:20:40,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:20:40,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:20:40,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:20:40,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:20:40,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:20:40,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:20:40,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:20:40,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:20:40,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:20:40,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:20:40,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:20:40,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:20:40,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:20:40,806 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:20:40,807 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M4-2.c [2019-11-06 22:20:40,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bcbb4b06/254fd15c49734d6390f39ff8bbe4e3cb/FLAGefc5f518d [2019-11-06 22:20:41,479 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:20:41,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M4-2.c [2019-11-06 22:20:41,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bcbb4b06/254fd15c49734d6390f39ff8bbe4e3cb/FLAGefc5f518d [2019-11-06 22:20:41,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bcbb4b06/254fd15c49734d6390f39ff8bbe4e3cb [2019-11-06 22:20:41,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:20:41,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:20:41,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:20:41,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:20:41,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:20:41,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:41" (1/1) ... [2019-11-06 22:20:41,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22019d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:41, skipping insertion in model container [2019-11-06 22:20:41,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:41" (1/1) ... [2019-11-06 22:20:41,649 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:20:41,709 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:20:42,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:20:42,420 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:20:42,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:20:42,686 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:20:42,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42 WrapperNode [2019-11-06 22:20:42,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:20:42,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:20:42,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:20:42,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:20:42,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... [2019-11-06 22:20:42,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:20:42,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:20:42,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:20:42,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:20:42,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 22:20:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:20:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:20:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-11-06 22:20:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2019-11-06 22:20:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2019-11-06 22:20:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2019-11-06 22:20:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2019-11-06 22:20:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2019-11-06 22:20:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2019-11-06 22:20:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2019-11-06 22:20:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2019-11-06 22:20:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2019-11-06 22:20:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2019-11-06 22:20:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2019-11-06 22:20:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-11-06 22:20:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2019-11-06 22:20:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-11-06 22:20:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2019-11-06 22:20:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2019-11-06 22:20:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2019-11-06 22:20:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2019-11-06 22:20:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2019-11-06 22:20:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2019-11-06 22:20:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2019-11-06 22:20:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2019-11-06 22:20:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2019-11-06 22:20:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2019-11-06 22:20:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2019-11-06 22:20:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:20:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2019-11-06 22:20:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2019-11-06 22:20:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2019-11-06 22:20:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2019-11-06 22:20:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2019-11-06 22:20:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2019-11-06 22:20:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2019-11-06 22:20:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2019-11-06 22:20:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2019-11-06 22:20:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2019-11-06 22:20:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2019-11-06 22:20:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:20:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2019-11-06 22:20:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2019-11-06 22:20:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2019-11-06 22:20:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2019-11-06 22:20:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:20:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2019-11-06 22:20:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2019-11-06 22:20:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2019-11-06 22:20:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2019-11-06 22:20:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2019-11-06 22:20:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2019-11-06 22:20:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-11-06 22:20:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2019-11-06 22:20:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-11-06 22:20:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2019-11-06 22:20:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2019-11-06 22:20:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2019-11-06 22:20:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2019-11-06 22:20:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2019-11-06 22:20:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2019-11-06 22:20:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2019-11-06 22:20:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2019-11-06 22:20:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2019-11-06 22:20:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:20:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:20:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:20:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:20:50,297 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:20:50,297 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:20:50,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:50 BoogieIcfgContainer [2019-11-06 22:20:50,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:20:50,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:20:50,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:20:50,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:20:50,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:20:41" (1/3) ... [2019-11-06 22:20:50,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29119dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:50, skipping insertion in model container [2019-11-06 22:20:50,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:42" (2/3) ... [2019-11-06 22:20:50,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29119dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:50, skipping insertion in model container [2019-11-06 22:20:50,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:50" (3/3) ... [2019-11-06 22:20:50,312 INFO L109 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-2.c [2019-11-06 22:20:50,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:20:50,340 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:20:50,358 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:20:50,406 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:20:50,406 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:20:50,407 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:20:50,407 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:20:50,407 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:20:50,407 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:20:50,408 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:20:50,408 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:20:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2019-11-06 22:20:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2943 [2019-11-06 22:20:50,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:20:50,768 INFO L410 BasicCegarLoop]: trace histogram [108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:20:50,771 INFO L410 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:20:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:20:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash 139427707, now seen corresponding path program 1 times [2019-11-06 22:20:50,788 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:20:50,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115785141] [2019-11-06 22:20:50,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:20:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat