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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:26:37,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:26:37,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:26:37,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:26:37,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:26:37,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:26:37,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:26:37,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:26:37,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:26:37,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:26:37,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:26:37,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:26:37,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:26:37,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:26:37,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:26:37,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:26:37,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:26:37,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:26:37,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:26:37,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:26:37,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:26:37,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:26:37,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:26:37,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:26:37,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:26:37,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:26:37,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:26:37,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:26:37,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:26:37,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:26:37,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:26:37,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:26:37,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:26:37,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:26:37,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:26:37,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:26:37,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:26:37,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:26:37,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:26:37,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:26:37,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:26:37,065 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 [2019-10-15 01:26:37,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:26:37,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:26:37,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:26:37,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:26:37,082 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:26:37,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:26:37,083 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:26:37,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:26:37,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:26:37,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:26:37,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:26:37,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:26:37,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:26:37,084 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:26:37,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:26:37,085 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:26:37,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:26:37,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:26:37,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:26:37,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:26:37,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:26:37,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:26:37,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:26:37,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:26:37,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:26:37,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:26:37,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:26:37,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:26:37,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:26:37,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:26:37,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:26:37,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:26:37,374 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:26:37,374 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:26:37,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-1.c [2019-10-15 01:26:37,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f856d7420/6a011584ecf244108d72ca7235e5912b/FLAGfa6ceb5c6 [2019-10-15 01:26:38,091 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:26:38,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-1.c [2019-10-15 01:26:38,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f856d7420/6a011584ecf244108d72ca7235e5912b/FLAGfa6ceb5c6 [2019-10-15 01:26:38,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f856d7420/6a011584ecf244108d72ca7235e5912b [2019-10-15 01:26:38,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:26:38,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:26:38,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:26:38,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:26:38,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:26:38,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:26:38" (1/1) ... [2019-10-15 01:26:38,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb33164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:38, skipping insertion in model container [2019-10-15 01:26:38,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:26:38" (1/1) ... [2019-10-15 01:26:38,328 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:26:38,387 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:26:39,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:26:39,098 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:26:39,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:26:39,455 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:26:39,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39 WrapperNode [2019-10-15 01:26:39,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:26:39,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:26:39,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:26:39,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:26:39,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (1/1) ... [2019-10-15 01:26:39,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:26:39,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:26:39,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:26:39,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:26:39,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (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 [2019-10-15 01:26:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:26:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:26:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-10-15 01:26:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2019-10-15 01:26:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2019-10-15 01:26:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2019-10-15 01:26:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2019-10-15 01:26:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2019-10-15 01:26:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2019-10-15 01:26:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2019-10-15 01:26:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2019-10-15 01:26:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2019-10-15 01:26:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2019-10-15 01:26:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2019-10-15 01:26:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-10-15 01:26:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2019-10-15 01:26:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-10-15 01:26:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2019-10-15 01:26:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2019-10-15 01:26:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2019-10-15 01:26:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2019-10-15 01:26:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2019-10-15 01:26:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2019-10-15 01:26:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2019-10-15 01:26:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2019-10-15 01:26:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2019-10-15 01:26:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2019-10-15 01:26:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2019-10-15 01:26:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2019-10-15 01:26:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2019-10-15 01:26:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2019-10-15 01:26:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2019-10-15 01:26:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2019-10-15 01:26:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2019-10-15 01:26:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2019-10-15 01:26:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:26:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2019-10-15 01:26:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2019-10-15 01:26:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2019-10-15 01:26:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2019-10-15 01:26:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 01:26:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2019-10-15 01:26:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2019-10-15 01:26:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2019-10-15 01:26:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2019-10-15 01:26:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2019-10-15 01:26:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2019-10-15 01:26:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2019-10-15 01:26:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2019-10-15 01:26:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2019-10-15 01:26:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2019-10-15 01:26:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2019-10-15 01:26:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2019-10-15 01:26:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2019-10-15 01:26:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2019-10-15 01:26:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-10-15 01:26:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2019-10-15 01:26:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-10-15 01:26:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2019-10-15 01:26:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2019-10-15 01:26:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2019-10-15 01:26:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2019-10-15 01:26:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2019-10-15 01:26:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2019-10-15 01:26:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2019-10-15 01:26:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2019-10-15 01:26:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2019-10-15 01:26:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:26:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:26:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:26:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:26:46,827 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:26:46,827 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:26:46,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:26:46 BoogieIcfgContainer [2019-10-15 01:26:46,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:26:46,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:26:46,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:26:46,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:26:46,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:26:38" (1/3) ... [2019-10-15 01:26:46,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ec6b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:26:46, skipping insertion in model container [2019-10-15 01:26:46,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:26:39" (2/3) ... [2019-10-15 01:26:46,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ec6b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:26:46, skipping insertion in model container [2019-10-15 01:26:46,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:26:46" (3/3) ... [2019-10-15 01:26:46,838 INFO L109 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-1.c [2019-10-15 01:26:46,848 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:26:46,858 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:26:46,870 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:26:46,899 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:26:46,900 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:26:46,900 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:26:46,900 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:26:46,900 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:26:46,900 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:26:46,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:26:46,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:26:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states. [2019-10-15 01:26:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2019-10-15 01:26:46,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:26:46,973 INFO L380 BasicCegarLoop]: trace histogram [27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:26:46,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:26:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:26:46,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1127243672, now seen corresponding path program 1 times [2019-10-15 01:26:46,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:26:46,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041410399] [2019-10-15 01:26:46,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:26:46,993 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:26:46,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:26:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat