./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-16 01:19:05,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:19:05,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:19:05,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:19:05,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:19:05,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:19:05,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:19:05,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:19:05,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:19:05,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:19:05,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:19:05,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:19:05,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:19:05,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:19:05,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:19:05,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:19:05,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:19:05,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:19:05,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:19:05,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:19:05,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:19:05,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:19:05,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:19:05,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:19:05,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:19:05,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:19:05,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:19:05,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:19:05,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:19:05,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:19:05,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:19:05,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:19:05,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:19:05,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:19:05,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:19:05,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:19:05,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:19:05,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:19:05,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:19:05,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:19:05,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:19:05,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:19:05,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:19:05,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:19:05,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:19:05,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:19:05,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:19:05,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:19:05,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:19:05,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:19:05,952 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:19:05,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:19:05,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:19:05,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:19:05,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:19:05,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:19:05,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:19:05,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:19:05,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:19:05,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:19:05,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:05,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:19:05,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:19:05,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:19:05,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:19:05,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e [2021-12-16 01:19:06,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:19:06,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:19:06,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:19:06,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:19:06,181 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:19:06,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-16 01:19:06,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3c23300/bf0bf99125974dc18dcb315fb9cdac12/FLAG4338bae45 [2021-12-16 01:19:06,690 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:19:06,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-16 01:19:06,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3c23300/bf0bf99125974dc18dcb315fb9cdac12/FLAG4338bae45 [2021-12-16 01:19:06,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3c23300/bf0bf99125974dc18dcb315fb9cdac12 [2021-12-16 01:19:06,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:19:06,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:19:06,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:06,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:19:06,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:19:06,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:06" (1/1) ... [2021-12-16 01:19:06,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1610daf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:06, skipping insertion in model container [2021-12-16 01:19:06,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:06" (1/1) ... [2021-12-16 01:19:06,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:19:06,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:19:06,945 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] [2021-12-16 01:19:07,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:07,231 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:19:07,247 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] [2021-12-16 01:19:07,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:07,438 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:19:07,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07 WrapperNode [2021-12-16 01:19:07,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:07,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:07,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:19:07,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:19:07,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,606 INFO L137 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2021-12-16 01:19:07,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:07,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:19:07,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:19:07,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:19:07,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:19:07,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:19:07,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:19:07,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:19:07,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (1/1) ... [2021-12-16 01:19:07,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:07,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:19:07,763 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) [2021-12-16 01:19:07,782 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 [2021-12-16 01:19:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:19:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-16 01:19:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-16 01:19:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:07,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 01:19:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-16 01:19:07,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-16 01:19:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-16 01:19:07,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-16 01:19:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-16 01:19:07,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-16 01:19:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:07,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 01:19:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-16 01:19:07,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-16 01:19:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:07,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:07,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:07,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:07,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:19:07,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:19:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-16 01:19:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-16 01:19:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-16 01:19:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-16 01:19:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:19:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:19:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:19:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:19:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:19:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-16 01:19:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-16 01:19:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-16 01:19:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-16 01:19:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:08,219 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:19:08,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:19:14,043 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:19:14,061 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:19:14,061 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 01:19:14,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:14 BoogieIcfgContainer [2021-12-16 01:19:14,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:19:14,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:19:14,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:19:14,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:19:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:19:06" (1/3) ... [2021-12-16 01:19:14,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc83248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:14, skipping insertion in model container [2021-12-16 01:19:14,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:07" (2/3) ... [2021-12-16 01:19:14,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc83248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:14, skipping insertion in model container [2021-12-16 01:19:14,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:14" (3/3) ... [2021-12-16 01:19:14,073 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-1.c [2021-12-16 01:19:14,077 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:19:14,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:19:14,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:19:14,130 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 [2021-12-16 01:19:14,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:19:14,169 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) [2021-12-16 01:19:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2021-12-16 01:19:14,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:19:14,213 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] [2021-12-16 01:19:14,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:19:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:19:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1711506897, now seen corresponding path program 1 times [2021-12-16 01:19:14,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:19:14,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593379833] [2021-12-16 01:19:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:19:14,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms