./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3815bc174681e4b15285bf80b6019df1e4400d301be17580b1900d66fa790fc8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:34:30,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:34:30,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:34:30,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:34:30,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:34:30,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:34:30,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:34:30,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:34:30,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:34:30,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:34:30,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:34:30,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:34:30,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:34:30,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:34:30,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:34:30,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:34:30,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:34:30,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:34:30,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:34:30,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:34:30,651 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:34:30,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:34:30,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:34:30,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:34:30,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:34:30,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:34:30,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:34:30,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:34:30,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:34:30,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:34:30,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:34:30,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:34:30,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:34:30,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:34:30,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:34:30,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:34:30,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:34:30,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:34:30,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:34:30,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:34:30,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:34:30,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:34:30,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:34:30,698 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:34:30,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:34:30,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:34:30,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:34:30,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:34:30,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:34:30,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:34:30,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:34:30,700 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:34:30,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:34:30,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:34:30,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:34:30,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:34:30,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:34:30,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:34:30,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:34:30,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:34:30,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:34:30,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:30,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:34:30,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:34:30,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3815bc174681e4b15285bf80b6019df1e4400d301be17580b1900d66fa790fc8 [2022-07-13 18:34:30,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:34:30,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:34:30,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:34:30,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:34:30,968 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:34:30,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-07-13 18:34:31,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debe5faff/7e5cc1524bfb4e6f895b1f6815096e30/FLAG3091d08ac [2022-07-13 18:34:31,586 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:34:31,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-07-13 18:34:31,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debe5faff/7e5cc1524bfb4e6f895b1f6815096e30/FLAG3091d08ac [2022-07-13 18:34:32,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debe5faff/7e5cc1524bfb4e6f895b1f6815096e30 [2022-07-13 18:34:32,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:34:32,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:34:32,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:32,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:34:32,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:34:32,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:32,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5fd291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32, skipping insertion in model container [2022-07-13 18:34:32,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:32,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:34:32,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:34:32,233 WARN L230 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.M4-2.c[1509,1522] [2022-07-13 18:34:32,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:32,549 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:34:32,562 WARN L230 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.M4-2.c[1509,1522] [2022-07-13 18:34:32,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:32,756 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:34:32,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32 WrapperNode [2022-07-13 18:34:32,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:32,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:32,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:34:32,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:34:32,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:32,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,011 INFO L137 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2022-07-13 18:34:33,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:33,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:34:33,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:34:33,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:34:33,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:34:33,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:34:33,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:34:33,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:34:33,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (1/1) ... [2022-07-13 18:34:33,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:34:33,252 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) [2022-07-13 18:34:33,277 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 [2022-07-13 18:34:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:34:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-13 18:34:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-13 18:34:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:34:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-13 18:34:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-13 18:34:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-13 18:34:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-13 18:34:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:34:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-13 18:34:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-13 18:34:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:34:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-07-13 18:34:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-07-13 18:34:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:34:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-13 18:34:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-13 18:34:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:34:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:34:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:34:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:34:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:34:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-13 18:34:33,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-13 18:34:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-13 18:34:33,300 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-13 18:34:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:33,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:33,749 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:34:33,751 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:34:40,189 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:34:40,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:34:40,203 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:34:40,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:40 BoogieIcfgContainer [2022-07-13 18:34:40,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:34:40,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:34:40,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:34:40,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:34:40,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:34:32" (1/3) ... [2022-07-13 18:34:40,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ab088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:40, skipping insertion in model container [2022-07-13 18:34:40,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:32" (2/3) ... [2022-07-13 18:34:40,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ab088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:40, skipping insertion in model container [2022-07-13 18:34:40,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:40" (3/3) ... [2022-07-13 18:34:40,213 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-2.c [2022-07-13 18:34:40,224 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:34:40,225 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:34:40,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:34:40,326 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=PETRI_NET, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@122d5292, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5569775c [2022-07-13 18:34:40,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:34:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 977 states have internal predecessors, (1194), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2022-07-13 18:34:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8483 [2022-07-13 18:34:40,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:34:40,977 INFO L195 NwaCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-13 18:34:40,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:34:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:34:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash -767459317, now seen corresponding path program 1 times [2022-07-13 18:34:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:34:40,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615096224] [2022-07-13 18:34:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:34:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms