./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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.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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:55:51,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:55:51,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:55:51,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:55:51,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:55:51,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:55:51,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:55:51,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:55:51,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:55:51,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:55:51,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:55:51,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:55:51,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:55:51,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:55:51,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:55:51,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:55:51,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:55:51,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:55:51,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:55:51,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:55:51,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:55:51,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:55:51,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:55:51,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:55:51,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:55:51,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:55:51,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:55:51,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:55:51,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:55:51,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:55:51,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:55:51,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:55:51,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:55:51,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:55:51,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:55:51,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:55:51,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:55:51,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:55:51,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:55:51,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:55:51,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:55:51,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:55:51,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:55:51,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:55:51,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:55:51,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:55:51,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:55:51,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:55:51,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:55:51,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:55:51,652 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:55:51,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:55:51,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:55:51,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:55:51,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:55:51,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:55:51,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:55:51,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:55:51,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:55:51,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:55:51,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:55:51,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:55:51,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:55:51,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:55:51,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:55:51,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:55:51,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:55:51,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:55:51,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:55:51,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:55:51,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:55:51,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:55:51,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:55:51,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:55:51,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:55:51,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:55:51,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2021-12-22 11:55:52,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:55:52,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:55:52,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:55:52,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:55:52,056 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:55:52,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2021-12-22 11:55:52,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14b8f8b9/c4a3a091319543e0bdc43fc697b0dc73/FLAG052beef3c [2021-12-22 11:55:53,012 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:55:53,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2021-12-22 11:55:53,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14b8f8b9/c4a3a091319543e0bdc43fc697b0dc73/FLAG052beef3c [2021-12-22 11:55:53,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14b8f8b9/c4a3a091319543e0bdc43fc697b0dc73 [2021-12-22 11:55:53,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:55:53,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:55:53,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:55:53,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:55:53,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:55:53,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:55:53" (1/1) ... [2021-12-22 11:55:53,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a4b2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:53, skipping insertion in model container [2021-12-22 11:55:53,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:55:53" (1/1) ... [2021-12-22 11:55:53,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:55:53,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:55:53,538 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.1.M1-2.c[1673,1686] [2021-12-22 11:55:53,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:55:53,891 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:55:53,918 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.1.M1-2.c[1673,1686] [2021-12-22 11:55:54,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:55:54,063 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:55:54,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54 WrapperNode [2021-12-22 11:55:54,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:55:54,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:55:54,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:55:54,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:55:54,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,267 INFO L137 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3715 [2021-12-22 11:55:54,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:55:54,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:55:54,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:55:54,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:55:54,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:55:54,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:55:54,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:55:54,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:55:54,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (1/1) ... [2021-12-22 11:55:54,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:55:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:55:54,463 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) [2021-12-22 11:55:54,482 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 [2021-12-22 11:55:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:55:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:55:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:55:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:55:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:55:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:55:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:55:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:55:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:55:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:55:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:55:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:55:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:55:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:55:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:55:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:55:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:55:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:55:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:55:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:55:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:55:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:55:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:55:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:55:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:55:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:55:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:55:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:55:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:55:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:55:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:55:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:55:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:55:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:55:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:55:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:55:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:55:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:55:54,937 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:55:54,953 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:56:01,063 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:56:01,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:56:01,078 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:56:01,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:01 BoogieIcfgContainer [2021-12-22 11:56:01,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:56:01,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:56:01,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:56:01,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:56:01,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:55:53" (1/3) ... [2021-12-22 11:56:01,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723120bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:01, skipping insertion in model container [2021-12-22 11:56:01,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:55:54" (2/3) ... [2021-12-22 11:56:01,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723120bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:01, skipping insertion in model container [2021-12-22 11:56:01,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:01" (3/3) ... [2021-12-22 11:56:01,090 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2021-12-22 11:56:01,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:56:01,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:56:01,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:56:01,147 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 [2021-12-22 11:56:01,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:56:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2021-12-22 11:56:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2021-12-22 11:56:01,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:56:01,279 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:56:01,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:56:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:56:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash -435675448, now seen corresponding path program 1 times [2021-12-22 11:56:01,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:56:01,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138007764] [2021-12-22 11:56:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:56:01,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms