./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.2.M4-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:10:11,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:10:11,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:10:11,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:10:11,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:10:11,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:10:11,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:10:11,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:10:11,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:10:11,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:10:11,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:10:11,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:10:11,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:10:11,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:10:11,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:10:11,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:10:11,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:10:11,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:10:11,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:10:11,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:10:11,852 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:10:11,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:10:11,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:10:11,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:10:11,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:10:11,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:10:11,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:10:11,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:10:11,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:10:11,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:10:11,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:10:11,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:10:11,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:10:11,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:10:11,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:10:11,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:10:11,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:10:11,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:10:11,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:10:11,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:10:11,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:10:11,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:10:11,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:10:11,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:10:11,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:10:11,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:10:11,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:10:11,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:10:11,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:10:11,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:10:11,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:10:11,903 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:10:11,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:10:11,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:10:11,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:10:11,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:10:11,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:10:11,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:10:11,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:10:11,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:10:11,905 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:10:11,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:10:11,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:10:11,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:10:11,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:10:11,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:10:11,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:10:11,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:10:11,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:10:11,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:10:11,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:10:11,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:10:11,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:10:11,909 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:10:11,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:10:11,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:10:11,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2022-07-22 18:10:12,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:10:12,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:10:12,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:10:12,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:10:12,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:10:12,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-07-22 18:10:12,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f451609/ee4c11b96b8845318709b2929f299bc7/FLAGa3f7fcdb6 [2022-07-22 18:10:12,944 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:10:12,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-07-22 18:10:12,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f451609/ee4c11b96b8845318709b2929f299bc7/FLAGa3f7fcdb6 [2022-07-22 18:10:13,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f451609/ee4c11b96b8845318709b2929f299bc7 [2022-07-22 18:10:13,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:10:13,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:10:13,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:10:13,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:10:13,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:10:13,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:10:13" (1/1) ... [2022-07-22 18:10:13,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b27c4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:13, skipping insertion in model container [2022-07-22 18:10:13,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:10:13" (1/1) ... [2022-07-22 18:10:13,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:10:13,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:10:13,647 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.2.M4-2.c[2278,2291] [2022-07-22 18:10:14,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:10:14,620 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:10:14,656 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.2.M4-2.c[2278,2291] [2022-07-22 18:10:15,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:10:15,358 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:10:15,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15 WrapperNode [2022-07-22 18:10:15,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:10:15,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:10:15,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:10:15,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:10:15,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:15,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,004 INFO L137 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2022-07-22 18:10:17,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:10:17,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:10:17,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:10:17,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:10:17,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:18,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:18,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:10:18,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:10:18,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:10:18,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:10:18,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:10:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:10:18,213 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) [2022-07-22 18:10:18,238 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 [2022-07-22 18:10:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:10:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-22 18:10:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-22 18:10:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:10:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:10:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 18:10:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-22 18:10:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-22 18:10:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-22 18:10:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-22 18:10:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-22 18:10:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-22 18:10:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-22 18:10:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-22 18:10:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 18:10:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-22 18:10:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-22 18:10:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-22 18:10:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-22 18:10:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:10:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:10:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:10:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:10:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 18:10:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:10:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:10:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 18:10:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-22 18:10:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-22 18:10:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-22 18:10:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-22 18:10:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-22 18:10:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-22 18:10:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 18:10:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 18:10:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:10:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:10:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:10:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-22 18:10:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-22 18:10:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-22 18:10:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-22 18:10:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:10:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:10:20,095 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:10:20,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:11:06,336 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:11:06,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:11:06,386 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:11:06,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:11:06 BoogieIcfgContainer [2022-07-22 18:11:06,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:11:06,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:11:06,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:11:06,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:11:06,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:10:13" (1/3) ... [2022-07-22 18:11:06,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d476609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:11:06, skipping insertion in model container [2022-07-22 18:11:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (2/3) ... [2022-07-22 18:11:06,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d476609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:11:06, skipping insertion in model container [2022-07-22 18:11:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:11:06" (3/3) ... [2022-07-22 18:11:06,409 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2022-07-22 18:11:06,423 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:11:06,424 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:11:06,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:11:06,728 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@28d4cc70, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@589067a9 [2022-07-22 18:11:06,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:11:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 12489 states, 8126 states have (on average 1.311469357617524) internal successors, (10657), 8239 states have internal predecessors, (10657), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2022-07-22 18:11:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2022-07-22 18:11:07,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:11:07,411 INFO L195 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:11:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:11:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 411216939, now seen corresponding path program 1 times [2022-07-22 18:11:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:11:07,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418974886] [2022-07-22 18:11:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:11:07,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms