./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-2.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_aso.1.M1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e618ac7f0d0fe46c0d3664cb960f19d8e01e350788161634161d0a95f103189d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:58:05,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:58:05,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:58:05,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:58:05,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:58:05,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:58:05,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:58:05,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:58:05,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:58:05,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:58:05,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:58:05,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:58:05,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:58:05,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:58:05,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:58:05,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:58:05,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:58:05,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:58:05,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:58:05,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:58:05,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:58:05,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:58:05,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:58:05,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:58:05,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:58:05,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:58:05,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:58:05,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:58:05,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:58:05,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:58:05,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:58:05,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:58:05,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:58:05,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:58:05,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:58:05,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:58:05,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:58:05,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:58:05,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:58:05,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:58:05,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:58:05,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:58:05,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:58:05,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:58:05,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:58:05,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:58:05,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:58:05,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:58:05,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:58:05,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:58:05,939 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:58:05,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:58:05,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:58:05,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:58:05,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:58:05,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:58:05,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:58:05,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:58:05,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:58:05,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:58:05,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:58:05,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:58:05,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:58:05,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:58:05,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:58:05,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:58:05,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e618ac7f0d0fe46c0d3664cb960f19d8e01e350788161634161d0a95f103189d [2021-12-17 15:58:06,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:58:06,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:58:06,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:58:06,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:58:06,177 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:58:06,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-2.c [2021-12-17 15:58:06,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a43aa3907/8d6f81aeb113476e9eb78d5b53a8dc23/FLAG897b3be1b [2021-12-17 15:58:06,693 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:58:06,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-2.c [2021-12-17 15:58:06,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a43aa3907/8d6f81aeb113476e9eb78d5b53a8dc23/FLAG897b3be1b [2021-12-17 15:58:07,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a43aa3907/8d6f81aeb113476e9eb78d5b53a8dc23 [2021-12-17 15:58:07,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:58:07,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:58:07,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:58:07,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:58:07,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:58:07,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef86f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07, skipping insertion in model container [2021-12-17 15:58:07,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:58:07,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:58:07,268 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_aso.1.M1-2.c[2055,2068] [2021-12-17 15:58:07,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:58:07,544 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:58:07,553 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_aso.1.M1-2.c[2055,2068] [2021-12-17 15:58:07,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:58:07,721 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:58:07,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07 WrapperNode [2021-12-17 15:58:07,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:58:07,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:58:07,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:58:07,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:58:07,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,880 INFO L137 Inliner]: procedures = 62, calls = 2058, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4377 [2021-12-17 15:58:07,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:58:07,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:58:07,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:58:07,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:58:07,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:07,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:08,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:58:08,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:58:08,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:58:08,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:58:08,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (1/1) ... [2021-12-17 15:58:08,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:58:08,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:58:08,054 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) [2021-12-17 15:58:08,108 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 [2021-12-17 15:58:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:58:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-17 15:58:08,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-17 15:58:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 15:58:08,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 15:58:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 15:58:08,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 15:58:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 15:58:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 15:58:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 15:58:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 15:58:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 15:58:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 15:58:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 15:58:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 15:58:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 15:58:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 15:58:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 15:58:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 15:58:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-17 15:58:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-17 15:58:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 15:58:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 15:58:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 15:58:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 15:58:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 15:58:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 15:58:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 15:58:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 15:58:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 15:58:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 15:58:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 15:58:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 15:58:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-17 15:58:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-17 15:58:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-17 15:58:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-17 15:58:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 15:58:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 15:58:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:58:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:58:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:58:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 15:58:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 15:58:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 15:58:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 15:58:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 15:58:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 15:58:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-17 15:58:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-17 15:58:08,520 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:58:08,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:58:14,300 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:58:14,313 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:58:14,315 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 15:58:14,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:58:14 BoogieIcfgContainer [2021-12-17 15:58:14,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:58:14,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:58:14,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:58:14,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:58:14,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:58:07" (1/3) ... [2021-12-17 15:58:14,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2f699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:58:14, skipping insertion in model container [2021-12-17 15:58:14,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:07" (2/3) ... [2021-12-17 15:58:14,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2f699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:58:14, skipping insertion in model container [2021-12-17 15:58:14,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:58:14" (3/3) ... [2021-12-17 15:58:14,326 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_aso.1.M1-2.c [2021-12-17 15:58:14,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:58:14,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:58:14,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:58:14,378 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 [2021-12-17 15:58:14,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:58:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 1363 states, 859 states have (on average 1.2747380675203726) internal successors, (1095), 890 states have internal predecessors, (1095), 481 states have call successors, (481), 21 states have call predecessors, (481), 21 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2021-12-17 15:58:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2021-12-17 15:58:14,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:58:14,464 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:58:14,465 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:58:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:58:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash -136158561, now seen corresponding path program 1 times [2021-12-17 15:58:14,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:58:14,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719374200] [2021-12-17 15:58:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:58:14,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms