/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:32:07,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:32:07,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:32:07,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:32:07,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:32:07,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:32:07,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:32:07,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:32:07,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:32:07,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:32:07,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:32:07,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:32:07,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:32:07,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:32:07,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:32:07,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:32:07,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:32:07,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:32:07,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:32:07,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:32:07,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:32:07,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:32:07,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:32:07,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:32:07,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:32:07,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:32:07,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:32:07,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:32:07,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:32:07,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:32:07,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:32:07,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:32:07,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:32:07,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:32:07,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:32:07,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:32:07,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:32:07,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:32:07,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:32:07,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:32:07,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:32:07,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:32:07,372 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:32:07,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:32:07,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:32:07,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:32:07,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:32:07,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:32:07,374 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:32:07,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:32:07,374 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:32:07,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:32:07,375 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:32:07,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:32:07,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:32:07,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:32:07,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:32:07,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:32:07,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:32:07,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:32:07,378 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:32:07,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:32:07,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:32:07,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:32:07,567 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:32:07,568 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:32:07,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2023-04-01 12:32:08,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:32:08,868 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:32:08,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2023-04-01 12:32:08,884 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa07e53d/4705be6e53bf4a35ad7d853c8be9de0b/FLAG14b01f0be [2023-04-01 12:32:08,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa07e53d/4705be6e53bf4a35ad7d853c8be9de0b [2023-04-01 12:32:08,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:32:08,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:32:08,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:32:08,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:32:08,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:32:08,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:32:08" (1/1) ... [2023-04-01 12:32:08,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346ad697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:08, skipping insertion in model container [2023-04-01 12:32:08,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:32:08" (1/1) ... [2023-04-01 12:32:08,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:32:08,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:32:09,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2023-04-01 12:32:09,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:32:09,422 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:32:09,442 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2023-04-01 12:32:09,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:32:09,582 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:32:09,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09 WrapperNode [2023-04-01 12:32:09,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:32:09,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:32:09,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:32:09,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:32:09,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:32:09,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:32:09,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:32:09,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:32:09,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (1/1) ... [2023-04-01 12:32:09,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:32:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:32:09,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:32:09,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-04-01 12:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 12:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_assert_i0 [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-04-01 12:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-04-01 12:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2023-04-01 12:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_assert_i0 [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-04-01 12:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2023-04-01 12:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 12:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:32:10,226 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:32:10,228 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:32:17,841 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:32:17,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:32:17,949 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 12:32:17,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:32:17 BoogieIcfgContainer [2023-04-01 12:32:17,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:32:17,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:32:17,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:32:17,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:32:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:32:08" (1/3) ... [2023-04-01 12:32:17,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384193aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:32:17, skipping insertion in model container [2023-04-01 12:32:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:32:09" (2/3) ... [2023-04-01 12:32:17,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384193aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:32:17, skipping insertion in model container [2023-04-01 12:32:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:32:17" (3/3) ... [2023-04-01 12:32:17,962 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2023-04-01 12:32:17,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:32:17,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:32:18,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:32:18,062 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16461b34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:32:18,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:32:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 1693 states, 989 states have (on average 1.2214357937310414) internal successors, (1208), 995 states have internal predecessors, (1208), 661 states have call successors, (661), 38 states have call predecessors, (661), 38 states have return successors, (661), 658 states have call predecessors, (661), 661 states have call successors, (661) [2023-04-01 12:32:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2023-04-01 12:32:18,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:32:18,109 INFO L195 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:32:18,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:32:18,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:32:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -699593838, now seen corresponding path program 1 times [2023-04-01 12:32:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:32:18,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063787549] [2023-04-01 12:32:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:32:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms