./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.M4.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 17a6dd75e60112a7f7af78ca3548f5d14d93f1e305c1fc4e0acf996889e6f17b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:56:18,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:56:18,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:56:18,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:56:18,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:56:18,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:56:18,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:56:18,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:56:18,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:56:18,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:56:18,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:56:18,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:56:18,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:56:18,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:56:18,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:56:18,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:56:18,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:56:18,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:56:18,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:56:18,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:56:18,940 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:56:18,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:56:18,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:56:18,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:56:18,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:56:18,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:56:18,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:56:18,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:56:18,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:56:18,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:56:18,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:56:18,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:56:18,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:56:18,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:56:18,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:56:18,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:56:18,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:56:18,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:56:18,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:56:18,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:56:18,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:56:18,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:56:18,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:56:18,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:56:18,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:56:18,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:56:18,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:56:18,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:56:18,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:56:18,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:56:18,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:56:18,986 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:56:18,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:56:18,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:56:18,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:56:18,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:56:18,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:56:18,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:56:18,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:56:18,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:56:18,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:56:18,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:56:18,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:56:18,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:56:18,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:56:18,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:56:18,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:56:18,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:56:18,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:56:18,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:56:18,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:56:18,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:56:18,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:56:18,991 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:56:18,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:56:18,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:56:18,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17a6dd75e60112a7f7af78ca3548f5d14d93f1e305c1fc4e0acf996889e6f17b [2022-07-19 17:56:19,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:56:19,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:56:19,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:56:19,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:56:19,216 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:56:19,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2022-07-19 17:56:19,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcba9322/cae533c9ff5f4117ab0659ff1437d0f6/FLAG373a2fded [2022-07-19 17:56:19,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:56:19,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2022-07-19 17:56:19,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcba9322/cae533c9ff5f4117ab0659ff1437d0f6/FLAG373a2fded [2022-07-19 17:56:20,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcba9322/cae533c9ff5f4117ab0659ff1437d0f6 [2022-07-19 17:56:20,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:56:20,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:56:20,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:56:20,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:56:20,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:56:20,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:56:20" (1/1) ... [2022-07-19 17:56:20,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70181357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:20, skipping insertion in model container [2022-07-19 17:56:20,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:56:20" (1/1) ... [2022-07-19 17:56:20,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:56:20,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:56:20,413 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.M4.c[2275,2288] [2022-07-19 17:56:21,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:56:21,091 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:56:21,107 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.M4.c[2275,2288] [2022-07-19 17:56:21,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:56:21,635 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:56:21,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21 WrapperNode [2022-07-19 17:56:21,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:56:21,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:56:21,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:56:21,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:56:21,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:22,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:22,961 INFO L137 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2022-07-19 17:56:22,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:56:22,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:56:22,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:56:22,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:56:22,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:22,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:23,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:23,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:23,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:23,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:23,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:24,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:56:24,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:56:24,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:56:24,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:56:24,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (1/1) ... [2022-07-19 17:56:24,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:56:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:56:24,057 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) [2022-07-19 17:56:24,099 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 [2022-07-19 17:56:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:56:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-19 17:56:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-19 17:56:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-19 17:56:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-19 17:56:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 17:56:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-19 17:56:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-19 17:56:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-19 17:56:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-19 17:56:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-19 17:56:24,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-19 17:56:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-19 17:56:24,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-19 17:56:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 17:56:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-19 17:56:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-19 17:56:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-19 17:56:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-19 17:56:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-19 17:56:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-19 17:56:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-19 17:56:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-19 17:56:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 17:56:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-19 17:56:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-19 17:56:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 17:56:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-19 17:56:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-19 17:56:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-19 17:56:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-19 17:56:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-19 17:56:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-19 17:56:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 17:56:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 17:56:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:56:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:56:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:56:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-19 17:56:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-19 17:56:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-19 17:56:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-19 17:56:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-19 17:56:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-19 17:56:25,662 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:56:25,663 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:57:09,549 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:57:09,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:57:09,592 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:57:09,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:57:09 BoogieIcfgContainer [2022-07-19 17:57:09,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:57:09,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:57:09,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:57:09,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:57:09,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:56:20" (1/3) ... [2022-07-19 17:57:09,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a80360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:57:09, skipping insertion in model container [2022-07-19 17:57:09,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:56:21" (2/3) ... [2022-07-19 17:57:09,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a80360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:57:09, skipping insertion in model container [2022-07-19 17:57:09,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:57:09" (3/3) ... [2022-07-19 17:57:09,615 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M4.c [2022-07-19 17:57:09,625 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:57:09,626 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:57:09,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:57:09,881 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@a8aac6e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@237d9a5b [2022-07-19 17:57:09,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:57:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 12489 states, 8126 states have (on average 1.311469357617524) internal successors, (10657), 8238 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) [2022-07-19 17:57:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2022-07-19 17:57:10,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:57:10,487 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] === [2022-07-19 17:57:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:57:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash 411216939, now seen corresponding path program 1 times [2022-07-19 17:57:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:57:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84427271] [2022-07-19 17:57:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:57:10,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms