./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 6c24879c 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-?-6c24879 [2022-07-12 06:51:16,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:51:16,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:51:16,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:51:16,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:51:16,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:51:16,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:51:16,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:51:16,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:51:16,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:51:16,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:51:16,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:51:16,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:51:16,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:51:16,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:51:16,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:51:16,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:51:16,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:51:16,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:51:16,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:51:16,852 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:51:16,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:51:16,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:51:16,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:51:16,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:51:16,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:51:16,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:51:16,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:51:16,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:51:16,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:51:16,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:51:16,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:51:16,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:51:16,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:51:16,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:51:16,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:51:16,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:51:16,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:51:16,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:51:16,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:51:16,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:51:16,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:51:16,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:51:16,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:51:16,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:51:16,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:51:16,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:51:16,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:51:16,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:51:16,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:51:16,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:51:16,908 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:51:16,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:51:16,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:51:16,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:51:16,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:51:16,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:51:16,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:51:16,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:51:16,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:51:16,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:51:16,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:51:16,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:51:16,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:51:16,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:51:16,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:51:16,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:51:16,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:51:16,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:51:16,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:51:16,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:51:16,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:51:16,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:51:16,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:51:16,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:51:16,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:51:16,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2022-07-12 06:51:17,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:51:17,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:51:17,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:51:17,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:51:17,089 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:51:17,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-07-12 06:51:17,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf5f56a0/1810db6033ce4f6684f8a5839941252c/FLAG2186e9c00 [2022-07-12 06:51:17,727 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:51:17,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-07-12 06:51:17,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf5f56a0/1810db6033ce4f6684f8a5839941252c/FLAG2186e9c00 [2022-07-12 06:51:18,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf5f56a0/1810db6033ce4f6684f8a5839941252c [2022-07-12 06:51:18,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:51:18,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:51:18,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:51:18,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:51:18,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:51:18,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:51:18" (1/1) ... [2022-07-12 06:51:18,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6dd651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:18, skipping insertion in model container [2022-07-12 06:51:18,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:51:18" (1/1) ... [2022-07-12 06:51:18,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:51:18,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:51:18,564 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] [2022-07-12 06:51:19,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:51:19,341 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:51:19,357 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] [2022-07-12 06:51:19,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:51:20,007 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:51:20,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20 WrapperNode [2022-07-12 06:51:20,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:51:20,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:51:20,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:51:20,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:51:20,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:20,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:21,245 INFO L137 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2022-07-12 06:51:21,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:51:21,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:51:21,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:51:21,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:51:21,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:21,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:21,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:21,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:22,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:22,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:22,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:22,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:51:22,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:51:22,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:51:22,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:51:22,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (1/1) ... [2022-07-12 06:51:22,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:51:22,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:51:22,533 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) [2022-07-12 06:51:22,588 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 [2022-07-12 06:51:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:51:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-12 06:51:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-12 06:51:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:51:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:51:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 06:51:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-12 06:51:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-12 06:51:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-12 06:51:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-12 06:51:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-12 06:51:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-12 06:51:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-12 06:51:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-12 06:51:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 06:51:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-12 06:51:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-12 06:51:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-12 06:51:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-12 06:51:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:51:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:51:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:51:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:51:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 06:51:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:51:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:51:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 06:51:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-12 06:51:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-12 06:51:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-12 06:51:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-12 06:51:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-12 06:51:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-12 06:51:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 06:51:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 06:51:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:51:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:51:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:51:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-12 06:51:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-12 06:51:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-12 06:51:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-12 06:51:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:51:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:51:24,228 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:51:24,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:52:09,754 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:52:09,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:52:09,793 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:52:09,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:52:09 BoogieIcfgContainer [2022-07-12 06:52:09,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:52:09,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:52:09,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:52:09,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:52:09,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:51:18" (1/3) ... [2022-07-12 06:52:09,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296790ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:52:09, skipping insertion in model container [2022-07-12 06:52:09,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:51:20" (2/3) ... [2022-07-12 06:52:09,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296790ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:52:09, skipping insertion in model container [2022-07-12 06:52:09,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:52:09" (3/3) ... [2022-07-12 06:52:09,814 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2022-07-12 06:52:09,824 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:52:09,824 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:52:10,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:52:10,085 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@aec8502, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c6b1268 [2022-07-12 06:52:10,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:52:10,116 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) [2022-07-12 06:52:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2022-07-12 06:52:10,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:52:10,504 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] === [2022-07-12 06:52:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:52:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 411216939, now seen corresponding path program 1 times [2022-07-12 06:52:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:52:10,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222071468] [2022-07-12 06:52:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:52:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms