./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_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 bddefdf3e33cf0835aee089299a408d34c996e1a935e7cc87de0cdc6493bca2a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:34:07,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:34:07,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:34:07,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:34:07,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:34:07,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:34:07,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:34:07,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:34:07,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:34:07,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:34:07,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:34:07,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:34:07,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:34:07,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:34:07,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:34:07,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:34:07,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:34:07,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:34:07,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:34:07,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:34:07,383 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:34:07,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:34:07,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:34:07,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:34:07,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:34:07,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:34:07,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:34:07,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:34:07,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:34:07,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:34:07,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:34:07,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:34:07,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:34:07,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:34:07,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:34:07,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:34:07,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:34:07,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:34:07,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:34:07,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:34:07,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:34:07,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:34:07,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:34:07,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:34:07,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:34:07,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:34:07,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:34:07,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:34:07,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:34:07,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:34:07,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:34:07,451 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:34:07,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:34:07,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:34:07,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:34:07,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:34:07,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:34:07,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:34:07,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:34:07,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:34:07,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:34:07,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:34:07,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:34:07,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:34:07,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:34:07,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:34:07,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:34:07,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:07,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:34:07,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:34:07,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:34:07,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:34:07,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:34:07,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:34:07,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:34:07,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:34:07,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bddefdf3e33cf0835aee089299a408d34c996e1a935e7cc87de0cdc6493bca2a [2022-07-13 18:34:07,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:34:07,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:34:07,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:34:07,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:34:07,716 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:34:07,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c [2022-07-13 18:34:07,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1533a657/1a6b1a55ae3c4c8990fde2f228b2a467/FLAG17546fe50 [2022-07-13 18:34:08,323 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:34:08,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c [2022-07-13 18:34:08,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1533a657/1a6b1a55ae3c4c8990fde2f228b2a467/FLAG17546fe50 [2022-07-13 18:34:08,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1533a657/1a6b1a55ae3c4c8990fde2f228b2a467 [2022-07-13 18:34:08,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:34:08,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:34:08,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:08,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:34:08,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:34:08,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:08" (1/1) ... [2022-07-13 18:34:08,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737eb15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:08, skipping insertion in model container [2022-07-13 18:34:08,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:08" (1/1) ... [2022-07-13 18:34:08,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:34:08,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:34:09,006 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_nxt.1.M1-2.c[1509,1522] [2022-07-13 18:34:09,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:09,284 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:34:09,296 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_nxt.1.M1-2.c[1509,1522] [2022-07-13 18:34:09,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:09,540 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:34:09,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09 WrapperNode [2022-07-13 18:34:09,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:09,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:09,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:34:09,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:34:09,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,761 INFO L137 Inliner]: procedures = 55, calls = 2033, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 3946 [2022-07-13 18:34:09,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:09,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:34:09,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:34:09,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:34:09,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:09,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:10,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:34:10,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:34:10,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:34:10,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:34:10,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (1/1) ... [2022-07-13 18:34:10,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:10,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:34:10,057 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) [2022-07-13 18:34:10,085 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 [2022-07-13 18:34:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:34:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-13 18:34:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-13 18:34:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:34:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-13 18:34:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-13 18:34:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-13 18:34:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-13 18:34:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:34:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-13 18:34:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-13 18:34:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:34:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:34:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-13 18:34:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-13 18:34:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:34:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:34:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:34:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:34:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:34:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-13 18:34:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-13 18:34:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-13 18:34:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-13 18:34:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:10,552 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:34:10,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:34:17,002 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:34:17,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:34:17,031 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:34:17,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:17 BoogieIcfgContainer [2022-07-13 18:34:17,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:34:17,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:34:17,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:34:17,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:34:17,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:34:08" (1/3) ... [2022-07-13 18:34:17,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e90b697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:17, skipping insertion in model container [2022-07-13 18:34:17,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:09" (2/3) ... [2022-07-13 18:34:17,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e90b697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:17, skipping insertion in model container [2022-07-13 18:34:17,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:17" (3/3) ... [2022-07-13 18:34:17,047 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-2.c [2022-07-13 18:34:17,061 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:34:17,061 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:34:17,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:34:17,179 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4943c100, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a2ed7e0 [2022-07-13 18:34:17,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:34:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 1597 states, 969 states have (on average 1.2291021671826625) internal successors, (1191), 974 states have internal predecessors, (1191), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 609 states have call predecessors, (611), 611 states have call successors, (611) [2022-07-13 18:34:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2134 [2022-07-13 18:34:17,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:34:17,390 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:34:17,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:34:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:34:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -937610375, now seen corresponding path program 1 times [2022-07-13 18:34:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:34:17,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73809279] [2022-07-13 18:34:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:34:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms