./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.3.M1.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 d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:32:56,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:32:56,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:32:56,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:32:56,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:32:56,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:32:56,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:32:56,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:32:56,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:32:56,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:32:56,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:32:56,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:32:56,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:32:56,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:32:56,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:32:56,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:32:56,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:32:56,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:32:56,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:32:56,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:32:56,321 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:32:56,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:32:56,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:32:56,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:32:56,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:32:56,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:32:56,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:32:56,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:32:56,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:32:56,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:32:56,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:32:56,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:32:56,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:32:56,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:32:56,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:32:56,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:32:56,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:32:56,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:32:56,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:32:56,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:32:56,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:32:56,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:32:56,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:32:56,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:32:56,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:32:56,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:32:56,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:32:56,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:32:56,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:32:56,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:32:56,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:32:56,382 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:32:56,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:32:56,383 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:32:56,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:32:56,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:32:56,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:32:56,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:32:56,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:32:56,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:32:56,384 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:32:56,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:32:56,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:32:56,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:32:56,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:32:56,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:32:56,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:32:56,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:32:56,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:32:56,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:32:56,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:32:56,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:32:56,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:32:56,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:32:56,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:32:56,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:32:56,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf [2022-07-21 05:32:56,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:32:56,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:32:56,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:32:56,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:32:56,707 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:32:56,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-07-21 05:32:56,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dd39bc/49abd19b30ca4a8f8477918eab134ca3/FLAG2b39c3dd3 [2022-07-21 05:32:57,329 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:32:57,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-07-21 05:32:57,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dd39bc/49abd19b30ca4a8f8477918eab134ca3/FLAG2b39c3dd3 [2022-07-21 05:32:57,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dd39bc/49abd19b30ca4a8f8477918eab134ca3 [2022-07-21 05:32:57,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:32:57,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:32:57,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:32:57,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:32:57,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:32:57,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:32:57" (1/1) ... [2022-07-21 05:32:57,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:57, skipping insertion in model container [2022-07-21 05:32:57,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:32:57" (1/1) ... [2022-07-21 05:32:57,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:32:57,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:32:57,806 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.3.M1.c[2017,2030] [2022-07-21 05:32:58,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:32:58,161 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:32:58,176 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.3.M1.c[2017,2030] [2022-07-21 05:32:58,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:32:58,379 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:32:58,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58 WrapperNode [2022-07-21 05:32:58,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:32:58,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:32:58,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:32:58,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:32:58,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,604 INFO L137 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2022-07-21 05:32:58,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:32:58,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:32:58,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:32:58,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:32:58,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:32:58,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:32:58,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:32:58,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:32:58,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (1/1) ... [2022-07-21 05:32:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:32:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:32:58,873 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) [2022-07-21 05:32:58,883 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 [2022-07-21 05:32:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:32:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-21 05:32:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-21 05:32:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-21 05:32:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-21 05:32:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 05:32:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-21 05:32:58,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-21 05:32:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-21 05:32:58,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-21 05:32:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-21 05:32:58,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-21 05:32:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-21 05:32:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-21 05:32:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 05:32:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-21 05:32:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-21 05:32:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-21 05:32:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-21 05:32:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-21 05:32:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-21 05:32:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-21 05:32:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-21 05:32:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 05:32:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-21 05:32:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-21 05:32:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 05:32:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:32:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:32:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-21 05:32:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-21 05:32:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-21 05:32:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-21 05:32:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:32:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:32:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:32:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:32:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:32:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-21 05:32:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-21 05:32:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-21 05:32:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-21 05:32:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-21 05:32:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-21 05:32:59,402 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:32:59,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:33:05,691 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:33:05,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:33:05,705 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:33:05,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:33:05 BoogieIcfgContainer [2022-07-21 05:33:05,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:33:05,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:33:05,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:33:05,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:33:05,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:32:57" (1/3) ... [2022-07-21 05:33:05,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fc268a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:33:05, skipping insertion in model container [2022-07-21 05:33:05,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:32:58" (2/3) ... [2022-07-21 05:33:05,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fc268a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:33:05, skipping insertion in model container [2022-07-21 05:33:05,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:33:05" (3/3) ... [2022-07-21 05:33:05,715 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M1.c [2022-07-21 05:33:05,727 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:33:05,728 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:33:05,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:33:05,831 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@15f13962, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9fdb943 [2022-07-21 05:33:05,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:33:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 815 states have (on average 1.2748466257668711) internal successors, (1039), 846 states have internal predecessors, (1039), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2022-07-21 05:33:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2022-07-21 05:33:05,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:33:05,911 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:33:05,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:33:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:33:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1711506897, now seen corresponding path program 1 times [2022-07-21 05:33:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:33:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685147267] [2022-07-21 05:33:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:33:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms