./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.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/rekh_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 0578c41b95f42d85ac77fb0006dcba936c74afd1d4a8fb3392e12544fff9b4d0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:56:41,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:56:41,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:56:41,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:56:41,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:56:41,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:56:41,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:56:41,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:56:41,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:56:41,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:56:41,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:56:41,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:56:41,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:56:41,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:56:41,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:56:41,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:56:41,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:56:41,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:56:41,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:56:41,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:56:41,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:56:41,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:56:41,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:56:41,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:56:41,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:56:41,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:56:41,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:56:41,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:56:41,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:56:41,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:56:41,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:56:41,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:56:41,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:56:41,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:56:41,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:56:41,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:56:41,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:56:41,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:56:41,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:56:41,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:56:41,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:56:41,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:56:41,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:56:41,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:56:41,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:56:41,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:56:41,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:56:41,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:56:41,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:56:41,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:56:41,562 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:56:41,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:56:41,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:56:41,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:56:41,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:56:41,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:41,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:56:41,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:56:41,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:56:41,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:56:41,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:56:41,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:56:41,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:56:41,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:56:41,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:56:41,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0578c41b95f42d85ac77fb0006dcba936c74afd1d4a8fb3392e12544fff9b4d0 [2021-12-22 11:56:41,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:56:41,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:56:41,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:56:41,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:56:41,815 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:56:41,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c [2021-12-22 11:56:41,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c9f735/8ff6a157b9294fc3a118e55b2ddbd897/FLAG15a8407d8 [2021-12-22 11:56:42,415 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:56:42,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c [2021-12-22 11:56:42,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c9f735/8ff6a157b9294fc3a118e55b2ddbd897/FLAG15a8407d8 [2021-12-22 11:56:42,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/527c9f735/8ff6a157b9294fc3a118e55b2ddbd897 [2021-12-22 11:56:42,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:56:42,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:56:42,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:42,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:56:42,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:56:42,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:42" (1/1) ... [2021-12-22 11:56:42,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f4ab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:42, skipping insertion in model container [2021-12-22 11:56:42,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:42" (1/1) ... [2021-12-22 11:56:42,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:56:42,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:56:42,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c[1719,1732] [2021-12-22 11:56:43,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:43,291 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:56:43,300 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/rekh_aso.1.M1-2.c[1719,1732] [2021-12-22 11:56:43,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:43,464 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:56:43,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43 WrapperNode [2021-12-22 11:56:43,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:43,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:43,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:56:43,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:56:43,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,720 INFO L137 Inliner]: procedures = 58, calls = 3129, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5929 [2021-12-22 11:56:43,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:43,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:56:43,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:56:43,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:56:43,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:56:43,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:56:43,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:56:43,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:56:43,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (1/1) ... [2021-12-22 11:56:43,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:56:43,975 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 11:56:43,993 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 11:56:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:56:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-22 11:56:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-22 11:56:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:56:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:56:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:56:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:56:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:56:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:56:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:56:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:56:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:56:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:56:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-22 11:56:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-22 11:56:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-22 11:56:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-22 11:56:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:56:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:56:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:56:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:56:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:56:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:56:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-22 11:56:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-22 11:56:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-22 11:56:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-22 11:56:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:56:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:56:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:56:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:56:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:56:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:56:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:56:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:56:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:56:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-22 11:56:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-22 11:56:44,484 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:56:44,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:56:54,502 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:56:54,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:56:54,516 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:56:54,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:54 BoogieIcfgContainer [2021-12-22 11:56:54,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:56:54,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:56:54,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:56:54,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:56:54,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:56:42" (1/3) ... [2021-12-22 11:56:54,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:54, skipping insertion in model container [2021-12-22 11:56:54,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:43" (2/3) ... [2021-12-22 11:56:54,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:54, skipping insertion in model container [2021-12-22 11:56:54,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:54" (3/3) ... [2021-12-22 11:56:54,526 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M1-2.c [2021-12-22 11:56:54,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:56:54,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:56:54,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:56:54,577 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 11:56:54,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:56:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 2333 states, 1372 states have (on average 1.1989795918367347) internal successors, (1645), 1377 states have internal predecessors, (1645), 938 states have call successors, (938), 21 states have call predecessors, (938), 21 states have return successors, (938), 936 states have call predecessors, (938), 938 states have call successors, (938) [2021-12-22 11:56:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-12-22 11:56:54,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:56:54,687 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:54,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:56:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:56:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash -662020641, now seen corresponding path program 1 times [2021-12-22 11:56:54,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:56:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405147973] [2021-12-22 11:56:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:56:54,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms