/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:21:39,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:21:39,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:21:39,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:21:39,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:21:39,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:21:39,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:21:39,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:21:39,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:21:39,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:21:39,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:21:39,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:21:39,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:21:39,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:21:39,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:21:39,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:21:39,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:21:39,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:21:39,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:21:39,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:21:39,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:21:39,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:21:39,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:21:39,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:21:39,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:21:39,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:21:39,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:21:39,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:21:39,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:21:39,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:21:39,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:21:39,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:21:39,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:21:39,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:21:39,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:21:39,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:21:39,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:21:39,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:21:39,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:21:39,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:21:39,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:21:39,473 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 00:21:39,503 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:21:39,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:21:39,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:21:39,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:21:39,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:21:39,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:21:39,505 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:21:39,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:21:39,505 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:21:39,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:21:39,506 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:21:39,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:21:39,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:21:39,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:21:39,506 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:21:39,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:21:39,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:21:39,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:21:39,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:21:39,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:21:39,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:21:39,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:21:39,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:21:39,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:21:39,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:21:39,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:21:39,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:21:39,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:21:39,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:21:39,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:21:39,769 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:21:39,770 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:21:39,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2023-04-01 00:21:40,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:21:41,300 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:21:41,305 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2023-04-01 00:21:41,321 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d51439aa/5d68333af86e427b8d8d8407a87fa500/FLAG7c4b078e8 [2023-04-01 00:21:41,332 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d51439aa/5d68333af86e427b8d8d8407a87fa500 [2023-04-01 00:21:41,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:21:41,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:21:41,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:21:41,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:21:41,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:21:41,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:21:41" (1/1) ... [2023-04-01 00:21:41,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4daa3491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:41, skipping insertion in model container [2023-04-01 00:21:41,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:21:41" (1/1) ... [2023-04-01 00:21:41,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:21:41,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:21:41,557 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.1.M4-1.c[1510,1523] [2023-04-01 00:21:41,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:21:41,926 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:21:41,941 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.1.M4-1.c[1510,1523] [2023-04-01 00:21:42,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:21:42,178 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:21:42,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42 WrapperNode [2023-04-01 00:21:42,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:21:42,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:21:42,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:21:42,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:21:42,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,416 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:21:42,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:21:42,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:21:42,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:21:42,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (1/1) ... [2023-04-01 00:21:42,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:21:42,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:21:42,494 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 00:21:42,522 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 00:21:42,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-04-01 00:21:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2023-04-01 00:21:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 00:21:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-04-01 00:21:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-04-01 00:21:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-04-01 00:21:42,544 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2023-04-01 00:21:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:21:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:21:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:21:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2023-04-01 00:21:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-04-01 00:21:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2023-04-01 00:21:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2023-04-01 00:21:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 00:21:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 00:21:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 00:21:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:21:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:21:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:21:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:21:42,943 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:21:42,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:21:52,073 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:21:52,193 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:21:52,193 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:21:52,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:21:52 BoogieIcfgContainer [2023-04-01 00:21:52,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:21:52,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:21:52,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:21:52,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:21:52,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:21:41" (1/3) ... [2023-04-01 00:21:52,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b689c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:21:52, skipping insertion in model container [2023-04-01 00:21:52,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:21:42" (2/3) ... [2023-04-01 00:21:52,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b689c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:21:52, skipping insertion in model container [2023-04-01 00:21:52,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:21:52" (3/3) ... [2023-04-01 00:21:52,206 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2023-04-01 00:21:52,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:21:52,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:21:52,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:21:52,327 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;@5642cd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:21:52,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:21:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 1641 states, 965 states have (on average 1.2269430051813472) internal successors, (1184), 971 states have internal predecessors, (1184), 634 states have call successors, (634), 37 states have call predecessors, (634), 37 states have return successors, (634), 631 states have call predecessors, (634), 634 states have call successors, (634) [2023-04-01 00:21:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6597 [2023-04-01 00:21:52,723 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:21:52,727 INFO L195 NwaCegarLoop]: trace histogram [964, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:21:52,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:21:52,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:21:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1245597921, now seen corresponding path program 1 times [2023-04-01 00:21:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:21:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731077537] [2023-04-01 00:21:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:21:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms