./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.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/rekcba_nxt.1.M4-1.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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:31:26,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:31:26,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:31:26,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:31:26,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:31:26,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:31:26,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:31:26,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:31:26,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:31:26,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:31:26,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:31:26,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:31:26,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:31:26,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:31:26,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:31:26,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:31:26,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:31:26,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:31:26,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:31:26,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:31:26,885 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:31:26,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:31:26,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:31:26,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:31:26,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:31:26,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:31:26,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:31:26,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:31:26,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:31:26,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:31:26,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:31:26,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:31:26,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:31:26,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:31:26,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:31:26,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:31:26,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:31:26,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:31:26,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:31:26,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:31:26,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:31:26,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:31:26,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:31:26,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:31:26,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:31:26,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:31:26,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:31:26,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:31:26,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:31:26,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:31:26,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:31:26,913 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:31:26,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:31:26,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:31:26,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:31:26,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:31:26,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:31:26,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:31:26,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:31:26,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:31:26,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:31:26,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:31:26,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:31:26,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:31:26,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:31:26,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:31:26,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:31:26,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:31:26,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:31:26,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:31:26,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:31:26,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2022-07-13 18:31:27,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:31:27,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:31:27,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:31:27,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:31:27,086 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:31:27,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-13 18:31:27,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7643b3b8/7cb3c41f58d14009968a08956712b1a7/FLAG758a5017a [2022-07-13 18:31:27,698 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:31:27,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-13 18:31:27,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7643b3b8/7cb3c41f58d14009968a08956712b1a7/FLAG758a5017a [2022-07-13 18:31:28,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7643b3b8/7cb3c41f58d14009968a08956712b1a7 [2022-07-13 18:31:28,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:31:28,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:31:28,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:31:28,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:31:28,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:31:28,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:31:28" (1/1) ... [2022-07-13 18:31:28,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54185596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:28, skipping insertion in model container [2022-07-13 18:31:28,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:31:28" (1/1) ... [2022-07-13 18:31:28,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:31:28,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:31:28,362 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/rekcba_nxt.1.M4-1.c[1673,1686] [2022-07-13 18:31:29,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:31:29,030 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:31:29,046 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/rekcba_nxt.1.M4-1.c[1673,1686] [2022-07-13 18:31:29,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:31:29,556 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:31:29,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29 WrapperNode [2022-07-13 18:31:29,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:31:29,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:31:29,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:31:29,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:31:29,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:29,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:30,842 INFO L137 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-07-13 18:31:30,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:31:30,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:31:30,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:31:30,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:31:30,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:30,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:31:31,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:31:31,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:31:31,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:31:31,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (1/1) ... [2022-07-13 18:31:31,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:31:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:31:31,940 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 18:31:31,970 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 18:31:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:31:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-13 18:31:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-13 18:31:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:31:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:31:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:31:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-13 18:31:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-13 18:31:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-13 18:31:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-13 18:31:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-13 18:31:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-13 18:31:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:31:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-13 18:31:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-13 18:31:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-13 18:31:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-13 18:31:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:31:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:31:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:31:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:31:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:31:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:31:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:31:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:31:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-13 18:31:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-13 18:31:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:31:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:31:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:31:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:31:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:31:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-13 18:31:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-13 18:31:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-13 18:31:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-13 18:31:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:31:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:31:33,678 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:31:33,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:32:25,032 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:32:25,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:32:25,078 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:32:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:32:25 BoogieIcfgContainer [2022-07-13 18:32:25,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:32:25,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:32:25,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:32:25,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:32:25,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:31:28" (1/3) ... [2022-07-13 18:32:25,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59614afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:32:25, skipping insertion in model container [2022-07-13 18:32:25,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:31:29" (2/3) ... [2022-07-13 18:32:25,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59614afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:32:25, skipping insertion in model container [2022-07-13 18:32:25,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:32:25" (3/3) ... [2022-07-13 18:32:25,098 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-07-13 18:32:25,110 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:32:25,110 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:32:25,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:32:25,294 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@c290cc4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@676637c8 [2022-07-13 18:32:25,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:32:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-07-13 18:32:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-07-13 18:32:25,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:32:25,732 INFO L195 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1] [2022-07-13 18:32:25,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:32:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:32:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2022-07-13 18:32:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:32:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447257396] [2022-07-13 18:32:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:32:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms