./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.M1-1.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 bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:15:52,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:15:52,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:15:52,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:15:52,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:15:52,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:15:52,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:15:52,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:15:52,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:15:52,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:15:52,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:15:52,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:15:52,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:15:52,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:15:52,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:15:52,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:15:52,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:15:52,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:15:52,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:15:52,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:15:52,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:15:52,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:15:52,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:15:52,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:15:52,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:15:52,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:15:52,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:15:52,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:15:52,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:15:52,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:15:52,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:15:52,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:15:52,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:15:52,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:15:52,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:15:52,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:15:52,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:15:52,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:15:52,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:15:52,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:15:52,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:15:52,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:15:52,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:15:52,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:15:52,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:15:52,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:15:52,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:15:52,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:15:52,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:15:52,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:15:52,963 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:15:52,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:15:52,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:15:52,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:15:52,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:15:52,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:15:52,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:15:52,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:15:52,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:15:52,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:15:52,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:15:52,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:15:52,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:15:52,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:15:52,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e [2021-12-28 01:15:53,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:15:53,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:15:53,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:15:53,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:15:53,242 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:15:53,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-28 01:15:53,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6d3e36e/8ca03b7ccbeb4e46bcb2e94ec32f0a95/FLAG705387996 [2021-12-28 01:15:53,741 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:15:53,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-28 01:15:53,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6d3e36e/8ca03b7ccbeb4e46bcb2e94ec32f0a95/FLAG705387996 [2021-12-28 01:15:54,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6d3e36e/8ca03b7ccbeb4e46bcb2e94ec32f0a95 [2021-12-28 01:15:54,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:15:54,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:15:54,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:15:54,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:15:54,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:15:54,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8f2870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54, skipping insertion in model container [2021-12-28 01:15:54,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:15:54,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:15:54,222 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.M1-1.c[2020,2033] [2021-12-28 01:15:54,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:15:54,491 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:15:54,501 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.M1-1.c[2020,2033] [2021-12-28 01:15:54,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:15:54,646 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:15:54,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54 WrapperNode [2021-12-28 01:15:54,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:15:54,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:15:54,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:15:54,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:15:54,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,837 INFO L137 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2021-12-28 01:15:54,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:15:54,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:15:54,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:15:54,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:15:54,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:54,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:55,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:15:55,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:15:55,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:15:55,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:15:55,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (1/1) ... [2021-12-28 01:15:55,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:15:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:15:55,027 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) [2021-12-28 01:15:55,030 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 [2021-12-28 01:15:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:15:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-28 01:15:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-28 01:15:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:15:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:15:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 01:15:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-28 01:15:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-28 01:15:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-28 01:15:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-28 01:15:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-28 01:15:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-28 01:15:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-28 01:15:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-28 01:15:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 01:15:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-28 01:15:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-28 01:15:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-28 01:15:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-28 01:15:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:15:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:15:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:15:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:15:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 01:15:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:15:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:15:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 01:15:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-28 01:15:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-28 01:15:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-28 01:15:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-28 01:15:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-28 01:15:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-28 01:15:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 01:15:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 01:15:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:15:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:15:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:15:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-28 01:15:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-28 01:15:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-28 01:15:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-28 01:15:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:15:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:15:55,413 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:15:55,415 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:16:01,195 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:16:01,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:16:01,212 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 01:16:01,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:16:01 BoogieIcfgContainer [2021-12-28 01:16:01,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:16:01,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:16:01,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:16:01,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:16:01,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:15:54" (1/3) ... [2021-12-28 01:16:01,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d54c03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:16:01, skipping insertion in model container [2021-12-28 01:16:01,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:15:54" (2/3) ... [2021-12-28 01:16:01,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d54c03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:16:01, skipping insertion in model container [2021-12-28 01:16:01,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:16:01" (3/3) ... [2021-12-28 01:16:01,222 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-1.c [2021-12-28 01:16:01,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:16:01,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:16:01,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:16:01,280 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 [2021-12-28 01:16:01,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:16:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 815 states have (on average 1.2748466257668711) internal successors, (1039), 847 states have internal predecessors, (1039), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2021-12-28 01:16:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2021-12-28 01:16:01,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:16:01,384 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:16:01,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:16:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:16:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1711506897, now seen corresponding path program 1 times [2021-12-28 01:16:01,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:16:01,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486370255] [2021-12-28 01:16:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:16:01,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms