./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.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.2.M1-2.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 a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:34:33,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:34:33,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:34:33,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:34:33,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:34:33,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:34:33,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:34:33,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:34:33,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:34:33,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:34:33,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:34:33,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:34:33,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:34:33,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:34:33,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:34:33,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:34:33,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:34:33,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:34:33,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:34:33,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:34:33,499 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:34:33,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:34:33,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:34:33,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:34:33,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:34:33,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:34:33,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:34:33,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:34:33,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:34:33,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:34:33,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:34:33,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:34:33,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:34:33,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:34:33,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:34:33,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:34:33,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:34:33,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:34:33,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:34:33,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:34:33,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:34:33,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:34:33,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:34:33,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:34:33,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:34:33,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:34:33,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:34:33,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:34:33,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:34:33,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:34:33,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:34:33,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:34:33,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:34:33,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:34:33,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:34:33,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:34:33,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:33,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:34:33,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:34:33,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:34:33,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 [2022-07-13 18:34:33,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:34:33,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:34:33,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:34:33,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:34:33,785 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:34:33,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-07-13 18:34:33,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847c39213/de90698e038a4b07a563ceaf7939c658/FLAGb37e4fbbf [2022-07-13 18:34:34,369 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:34:34,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-07-13 18:34:34,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847c39213/de90698e038a4b07a563ceaf7939c658/FLAGb37e4fbbf [2022-07-13 18:34:34,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847c39213/de90698e038a4b07a563ceaf7939c658 [2022-07-13 18:34:34,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:34:34,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:34:34,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:34,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:34:34,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:34:34,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:34" (1/1) ... [2022-07-13 18:34:34,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b750bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:34, skipping insertion in model container [2022-07-13 18:34:34,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:34" (1/1) ... [2022-07-13 18:34:34,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:34:34,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:34:35,109 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.2.M1-2.c[1682,1695] [2022-07-13 18:34:35,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:35,360 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:34:35,377 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.2.M1-2.c[1682,1695] [2022-07-13 18:34:35,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:35,564 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:34:35,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35 WrapperNode [2022-07-13 18:34:35,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:35,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:35,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:34:35,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:34:35,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,734 INFO L137 Inliner]: procedures = 56, calls = 2059, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4010 [2022-07-13 18:34:35,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:35,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:34:35,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:34:35,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:34:35,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:34:35,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:34:35,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:34:35,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:34:35,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (1/1) ... [2022-07-13 18:34:35,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:34:35,930 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 18:34:35,982 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 18:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-13 18:34:36,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-13 18:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:36,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-13 18:34:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-13 18:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-13 18:34:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-13 18:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-13 18:34:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-13 18:34:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:34:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:34:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-13 18:34:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-13 18:34:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-13 18:34:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-13 18:34:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:34:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:34:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:34:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:34:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:34:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-13 18:34:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-13 18:34:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-13 18:34:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-13 18:34:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:36,367 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:34:36,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:34:42,194 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:34:42,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:34:42,210 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:34:42,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:42 BoogieIcfgContainer [2022-07-13 18:34:42,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:34:42,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:34:42,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:34:42,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:34:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:34:34" (1/3) ... [2022-07-13 18:34:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579bc3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:42, skipping insertion in model container [2022-07-13 18:34:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:35" (2/3) ... [2022-07-13 18:34:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579bc3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:42, skipping insertion in model container [2022-07-13 18:34:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:42" (3/3) ... [2022-07-13 18:34:42,234 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-2.c [2022-07-13 18:34:42,245 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:34:42,246 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:34:42,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:34:42,344 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@61c03c7a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d512fa9 [2022-07-13 18:34:42,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:34:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 999 states have (on average 1.2262262262262262) internal successors, (1225), 1004 states have internal predecessors, (1225), 638 states have call successors, (638), 16 states have call predecessors, (638), 16 states have return successors, (638), 636 states have call predecessors, (638), 638 states have call successors, (638) [2022-07-13 18:34:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2022-07-13 18:34:42,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:34:42,437 INFO L195 NwaCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:34:42,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:34:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:34:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -66308904, now seen corresponding path program 1 times [2022-07-13 18:34:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:34:42,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688561628] [2022-07-13 18:34:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:34:42,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms