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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:29:42,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:29:42,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:29:42,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:29:42,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:29:42,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:29:42,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:29:42,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:29:42,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:29:42,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:29:42,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:29:42,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:29:42,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:29:42,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:29:42,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:29:42,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:29:42,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:29:42,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:29:42,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:29:42,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:29:42,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:29:42,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:29:42,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:29:42,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:29:42,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:29:42,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:29:42,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:29:42,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:29:42,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:29:42,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:29:42,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:29:42,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:29:42,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:29:42,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:29:42,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:29:42,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:29:42,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:29:42,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:29:42,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:29:42,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:29:42,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:29:42,795 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 03:29:42,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:29:42,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:29:42,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:29:42,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:29:42,832 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:29:42,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:29:42,835 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:29:42,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:29:42,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:29:42,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:29:42,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:29:42,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:29:42,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:29:42,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:29:42,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:29:42,836 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:29:42,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:29:42,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:29:42,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:29:42,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:29:42,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:29:42,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:29:42,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:29:42,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:29:43,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:29:43,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:29:43,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:29:43,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:29:43,164 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:29:43,165 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-2.c [2019-10-15 03:29:43,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d78ff9c/e63fd67d47fd455f9bac7770bc174655/FLAGc3ad81da1 [2019-10-15 03:29:43,907 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:29:43,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/rekh_nxt.1.M1-2.c [2019-10-15 03:29:43,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d78ff9c/e63fd67d47fd455f9bac7770bc174655/FLAGc3ad81da1 [2019-10-15 03:29:44,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d78ff9c/e63fd67d47fd455f9bac7770bc174655 [2019-10-15 03:29:44,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:29:44,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:29:44,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:29:44,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:29:44,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:29:44,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:29:44" (1/1) ... [2019-10-15 03:29:44,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:44, skipping insertion in model container [2019-10-15 03:29:44,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:29:44" (1/1) ... [2019-10-15 03:29:44,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:29:44,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:29:44,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:29:44,960 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:29:45,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:29:45,244 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:29:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45 WrapperNode [2019-10-15 03:29:45,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:29:45,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:29:45,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:29:45,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:29:45,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (1/1) ... [2019-10-15 03:29:45,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:29:45,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:29:45,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:29:45,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:29:45,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (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 03:29:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:29:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:29:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-10-15 03:29:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2019-10-15 03:29:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2019-10-15 03:29:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2019-10-15 03:29:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2019-10-15 03:29:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2019-10-15 03:29:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2019-10-15 03:29:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2019-10-15 03:29:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2019-10-15 03:29:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2019-10-15 03:29:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2019-10-15 03:29:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2019-10-15 03:29:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-10-15 03:29:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2019-10-15 03:29:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-10-15 03:29:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2019-10-15 03:29:45,635 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2019-10-15 03:29:45,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2019-10-15 03:29:45,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2019-10-15 03:29:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2019-10-15 03:29:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2019-10-15 03:29:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2019-10-15 03:29:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2019-10-15 03:29:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2019-10-15 03:29:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2019-10-15 03:29:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2019-10-15 03:29:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:29:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2019-10-15 03:29:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2019-10-15 03:29:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2019-10-15 03:29:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2019-10-15 03:29:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2019-10-15 03:29:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2019-10-15 03:29:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2019-10-15 03:29:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2019-10-15 03:29:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2019-10-15 03:29:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2019-10-15 03:29:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2019-10-15 03:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2019-10-15 03:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 03:29:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 03:29:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2019-10-15 03:29:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2019-10-15 03:29:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2019-10-15 03:29:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2019-10-15 03:29:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2019-10-15 03:29:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2019-10-15 03:29:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2019-10-15 03:29:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2019-10-15 03:29:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2019-10-15 03:29:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2019-10-15 03:29:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2019-10-15 03:29:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2019-10-15 03:29:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2019-10-15 03:29:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2019-10-15 03:29:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2019-10-15 03:29:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2019-10-15 03:29:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2019-10-15 03:29:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2019-10-15 03:29:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2019-10-15 03:29:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2019-10-15 03:29:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:29:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:29:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:29:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:20,802 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:20,802 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:30:20,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:20 BoogieIcfgContainer [2019-10-15 03:30:20,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:20,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:20,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:20,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:20,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:29:44" (1/3) ... [2019-10-15 03:30:20,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e41059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:20, skipping insertion in model container [2019-10-15 03:30:20,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:45" (2/3) ... [2019-10-15 03:30:20,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e41059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:20, skipping insertion in model container [2019-10-15 03:30:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:20" (3/3) ... [2019-10-15 03:30:20,825 INFO L109 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-2.c [2019-10-15 03:30:20,841 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:21,065 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:21,086 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:21,129 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:21,130 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:21,130 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:21,130 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:21,130 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:21,130 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:21,131 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:21,131 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2019-10-15 03:30:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2019-10-15 03:30:21,222 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:21,224 INFO L380 BasicCegarLoop]: trace histogram [27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 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] [2019-10-15 03:30:21,227 INFO L410 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2116585798, now seen corresponding path program 1 times [2019-10-15 03:30:21,244 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:21,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121257099] [2019-10-15 03:30:21,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:21,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:21,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat