/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 OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:23:50,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:23:50,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:23:50,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:23:50,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:23:50,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:23:50,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:23:50,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:23:50,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:23:50,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:23:50,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:23:50,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:23:50,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:23:50,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:23:50,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:23:50,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:23:50,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:23:50,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:23:50,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:23:50,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:23:50,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:23:50,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:23:50,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:23:50,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:23:50,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:23:50,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:23:50,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:23:50,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:23:50,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:23:50,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:23:50,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:23:50,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:23:50,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:23:50,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:23:50,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:23:50,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:23:50,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:23:50,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:23:50,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:23:50,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:23:50,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:23:50,233 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 06:23:50,250 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:23:50,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:23:50,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:23:50,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:23:50,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:23:50,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:23:50,251 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:23:50,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:23:50,251 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:23:50,252 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:23:50,252 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:23:50,253 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:23:50,253 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:23:50,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:23:50,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:23:50,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:23:50,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:23:50,255 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:23:50,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:23:50,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:23:50,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:23:50,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:23:50,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:23:50,433 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:23:50,434 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:23:50,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2023-04-01 06:23:51,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:23:51,741 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:23:51,742 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2023-04-01 06:23:51,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0d4aa49/c7e5abe9f6af451393aa2a6c1fbc02a0/FLAGb3ed3ce8c [2023-04-01 06:23:51,770 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0d4aa49/c7e5abe9f6af451393aa2a6c1fbc02a0 [2023-04-01 06:23:51,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:23:51,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:23:51,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:23:51,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:23:51,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:23:51,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:23:51" (1/1) ... [2023-04-01 06:23:51,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cb893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:51, skipping insertion in model container [2023-04-01 06:23:51,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:23:51" (1/1) ... [2023-04-01 06:23:51,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:23:51,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:23:51,944 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/rekcba_nxt.2.M1-2.c[1937,1950] [2023-04-01 06:23:52,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:23:52,192 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:23:52,201 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/rekcba_nxt.2.M1-2.c[1937,1950] [2023-04-01 06:23:52,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:23:52,410 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:23:52,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52 WrapperNode [2023-04-01 06:23:52,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:23:52,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:23:52,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:23:52,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:23:52,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:23:52,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:23:52,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:23:52,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:23:52,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (1/1) ... [2023-04-01 06:23:52,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:23:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:23:52,636 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 06:23:52,664 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 06:23:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:23:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:23:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:23:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:23:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_init [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure balance_control [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_read_bt_packet [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_battery_voltage [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts1 [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_sonar_sensor [2023-04-01 06:23:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_ts2 [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure OSEK_Task_Background [2023-04-01 06:23:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure cil_keeperOSEK_Task_Background [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_schedule_jobs [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_globals [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_assert_i0 [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_check_assumptions [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_init [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_user_final [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_check_assertions [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __main [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:23:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_init_shared [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_bt_data_logger [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_sound_tone [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_status_monitor [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-04-01 06:23:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-04-01 06:23:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_on_lcd [2023-04-01 06:23:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:23:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:23:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_shared [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_assert_i0 [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:23:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure balance_init [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure balance_control [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:23:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_sound_tone [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_status_monitor [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_read_bt_packet [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_battery_voltage [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_bt_data_logger [2023-04-01 06:23:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts1 [2023-04-01 06:23:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_sonar_sensor [2023-04-01 06:23:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_ts2 [2023-04-01 06:23:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-04-01 06:23:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts2 [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_ts1 [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_on_lcd [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure OSEK_Task_Background [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure cil_keeperOSEK_Task_Background [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_schedule_jobs [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_init_globals [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_check_assumptions [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_init [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_user_final [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_check_assertions [2023-04-01 06:23:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure __main [2023-04-01 06:23:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:23:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:23:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:23:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:23:53,038 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:23:53,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:23:58,964 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:23:59,050 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:23:59,050 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 06:23:59,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:23:59 BoogieIcfgContainer [2023-04-01 06:23:59,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:23:59,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:23:59,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:23:59,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:23:59,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:23:51" (1/3) ... [2023-04-01 06:23:59,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5b073e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:23:59, skipping insertion in model container [2023-04-01 06:23:59,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:23:52" (2/3) ... [2023-04-01 06:23:59,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5b073e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:23:59, skipping insertion in model container [2023-04-01 06:23:59,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:23:59" (3/3) ... [2023-04-01 06:23:59,061 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2023-04-01 06:23:59,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:23:59,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:23:59,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:23:59,124 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;@2e72cba1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:23:59,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:23:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 1239 states, 751 states have (on average 1.2729693741677763) internal successors, (956), 785 states have internal predecessors, (956), 443 states have call successors, (443), 40 states have call predecessors, (443), 40 states have return successors, (443), 440 states have call predecessors, (443), 443 states have call successors, (443) [2023-04-01 06:23:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-04-01 06:23:59,176 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:23:59,177 INFO L195 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:59,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:23:59,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:23:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2103160204, now seen corresponding path program 1 times [2023-04-01 06:23:59,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:23:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605204898] [2023-04-01 06:23:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:23:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms