./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:05:12,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:05:12,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:05:12,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:05:12,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:05:12,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:05:12,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:05:12,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:05:12,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:05:12,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:05:12,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:05:12,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:05:12,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:05:12,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:05:12,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:05:12,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:05:12,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:05:12,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:05:12,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:05:12,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:05:12,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:05:12,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:05:12,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:05:12,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:05:12,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:05:12,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:05:12,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:05:12,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:05:12,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:05:12,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:05:12,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:05:12,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:05:12,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:05:12,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:05:12,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:05:12,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:05:12,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:05:12,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:05:12,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:05:12,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:05:12,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:05:12,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:05:12,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:05:12,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:05:12,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:05:12,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:05:12,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:05:12,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:05:12,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:05:12,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:05:12,156 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:05:12,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:05:12,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:05:12,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:05:12,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:05:12,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:05:12,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:05:12,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:05:12,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:05:12,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:05:12,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:05:12,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:05:12,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:05:12,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:05:12,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:05:12,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:05:12,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17a6dd75e60112a7f7af78ca3548f5d14d93f1e305c1fc4e0acf996889e6f17b [2021-12-14 15:05:12,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:05:12,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:05:12,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:05:12,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:05:12,369 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:05:12,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2021-12-14 15:05:12,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8a7a70b/48d42d547fcf4cfe804f7620717649c4/FLAGb813bdbf8 [2021-12-14 15:05:13,048 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:05:13,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M4.c [2021-12-14 15:05:13,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8a7a70b/48d42d547fcf4cfe804f7620717649c4/FLAGb813bdbf8 [2021-12-14 15:05:13,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8a7a70b/48d42d547fcf4cfe804f7620717649c4 [2021-12-14 15:05:13,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:05:13,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:05:13,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:05:13,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:05:13,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:05:13,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:13" (1/1) ... [2021-12-14 15:05:13,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea64596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:13, skipping insertion in model container [2021-12-14 15:05:13,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:13" (1/1) ... [2021-12-14 15:05:13,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:05:13,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:05:13,569 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] [2021-12-14 15:05:14,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:05:14,398 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:05:14,414 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] [2021-12-14 15:05:15,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:05:15,127 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:05:15,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15 WrapperNode [2021-12-14 15:05:15,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:05:15,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:05:15,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:05:15,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:05:15,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:15,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:16,157 INFO L137 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2021-12-14 15:05:16,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:05:16,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:05:16,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:05:16,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:05:16,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:16,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:16,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:17,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:17,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:17,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:17,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:05:17,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:05:17,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:05:17,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:05:17,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (1/1) ... [2021-12-14 15:05:17,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:05:17,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:05:17,467 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) [2021-12-14 15:05:17,489 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 [2021-12-14 15:05:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:05:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-14 15:05:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-14 15:05:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-14 15:05:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-14 15:05:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 15:05:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-14 15:05:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-14 15:05:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-14 15:05:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-14 15:05:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-14 15:05:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-14 15:05:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-14 15:05:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-14 15:05:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 15:05:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-14 15:05:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-14 15:05:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-14 15:05:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-14 15:05:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-14 15:05:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-14 15:05:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-14 15:05:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-14 15:05:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 15:05:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-14 15:05:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-14 15:05:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 15:05:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-14 15:05:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-14 15:05:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-14 15:05:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-14 15:05:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-14 15:05:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-14 15:05:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 15:05:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 15:05:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:05:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:05:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:05:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-14 15:05:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-14 15:05:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-14 15:05:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-14 15:05:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-14 15:05:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-14 15:05:19,018 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:05:19,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:05:55,493 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:05:55,546 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:05:55,547 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:05:55,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:55 BoogieIcfgContainer [2021-12-14 15:05:55,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:05:55,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:05:55,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:05:55,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:05:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:05:13" (1/3) ... [2021-12-14 15:05:55,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dd240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:55, skipping insertion in model container [2021-12-14 15:05:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:15" (2/3) ... [2021-12-14 15:05:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dd240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:55, skipping insertion in model container [2021-12-14 15:05:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:55" (3/3) ... [2021-12-14 15:05:55,567 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M4.c [2021-12-14 15:05:55,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:05:55,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:05:55,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:05:55,649 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:05:55,650 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:05:55,817 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) [2021-12-14 15:05:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2021-12-14 15:05:56,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:05:56,367 INFO L514 BasicCegarLoop]: 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, 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15:05:56,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:05:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:05:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash 411216939, now seen corresponding path program 1 times [2021-12-14 15:05:56,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:05:56,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185272791] [2021-12-14 15:05:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:05:56,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms