./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.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 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:35:57,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:35:57,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:35:57,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:35:57,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:35:57,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:35:57,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:35:57,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:35:57,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:35:57,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:35:57,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:35:57,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:35:57,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:35:57,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:35:57,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:35:57,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:35:57,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:35:57,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:35:57,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:35:57,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:35:57,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:35:57,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:35:57,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:35:57,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:35:57,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:35:57,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:35:57,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:35:57,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:35:57,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:35:57,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:35:57,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:35:57,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:35:57,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:35:57,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:35:57,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:35:57,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:35:57,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:35:57,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:35:57,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:35:57,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:35:57,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:35:57,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:35:58,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:35:58,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:35:58,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:35:58,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:35:58,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:35:58,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:35:58,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:35:58,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:35:58,014 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:35:58,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:35:58,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:35:58,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:35:58,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:35:58,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:35:58,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:58,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:35:58,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:35:58,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:35:58,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:35:58,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:35:58,018 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:35:58,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:35:58,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:35:58,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a [2022-02-20 18:35:58,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:35:58,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:35:58,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:35:58,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:35:58,229 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:35:58,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-02-20 18:35:58,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dbb1706/df4ce2cbb9544502b6d860d3797facb0/FLAG40e458aa1 [2022-02-20 18:35:58,838 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:35:58,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-02-20 18:35:58,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dbb1706/df4ce2cbb9544502b6d860d3797facb0/FLAG40e458aa1 [2022-02-20 18:35:59,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dbb1706/df4ce2cbb9544502b6d860d3797facb0 [2022-02-20 18:35:59,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:35:59,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:35:59,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:59,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:35:59,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:35:59,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:59" (1/1) ... [2022-02-20 18:35:59,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eba58fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:59, skipping insertion in model container [2022-02-20 18:35:59,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:59" (1/1) ... [2022-02-20 18:35:59,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:35:59,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:35:59,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c[2195,2208] [2022-02-20 18:36:00,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:36:00,350 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:36:00,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c[2195,2208] [2022-02-20 18:36:00,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:36:00,963 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:36:00,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00 WrapperNode [2022-02-20 18:36:00,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:36:00,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:36:00,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:36:00,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:36:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:01,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:02,404 INFO L137 Inliner]: procedures = 58, calls = 18195, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39852 [2022-02-20 18:36:02,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:36:02,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:36:02,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:36:02,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:36:02,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:02,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:02,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:02,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:03,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:03,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:03,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:03,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:36:03,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:36:03,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:36:03,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:36:03,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (1/1) ... [2022-02-20 18:36:03,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:36:03,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:36:03,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 18:36:03,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 18:36:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:36:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:36:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:36:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:36:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:36:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:36:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:36:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:36:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:36:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:36:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:36:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:36:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:36:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:36:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:36:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:36:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:36:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:36:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:36:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:36:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:36:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:36:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:36:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:36:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:36:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-02-20 18:36:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-02-20 18:36:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:36:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:36:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:36:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:36:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:36:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:36:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:36:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:36:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:36:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:36:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:36:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:36:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:36:05,277 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:36:05,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:36:53,199 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:36:53,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:36:53,258 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:36:53,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:36:53 BoogieIcfgContainer [2022-02-20 18:36:53,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:36:53,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:36:53,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:36:53,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:36:53,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:35:59" (1/3) ... [2022-02-20 18:36:53,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94e2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:36:53, skipping insertion in model container [2022-02-20 18:36:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:36:00" (2/3) ... [2022-02-20 18:36:53,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94e2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:36:53, skipping insertion in model container [2022-02-20 18:36:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:36:53" (3/3) ... [2022-02-20 18:36:53,278 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-1.c [2022-02-20 18:36:53,282 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:36:53,283 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:36:53,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:36:53,370 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 [2022-02-20 18:36:53,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:36:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 12240 states, 7996 states have (on average 1.3156578289144572) internal successors, (10520), 8109 states have internal predecessors, (10520), 4226 states have call successors, (4226), 16 states have call predecessors, (4226), 16 states have return successors, (4226), 4224 states have call predecessors, (4226), 4226 states have call successors, (4226) [2022-02-20 18:36:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-02-20 18:36:54,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:36:54,101 INFO L514 BasicCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2022-02-20 18:36:54,101 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:36:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:36:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1377856296, now seen corresponding path program 1 times [2022-02-20 18:36:54,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:36:54,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767566246] [2022-02-20 18:36:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:36:54,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms