./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_ctm.4.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 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:36:23,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:36:23,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:36:23,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:36:23,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:36:23,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:36:23,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:36:23,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:36:23,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:36:23,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:36:23,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:36:23,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:36:23,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:36:23,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:36:23,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:36:23,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:36:23,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:36:23,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:36:23,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:36:23,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:36:23,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:36:23,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:36:23,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:36:23,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:36:23,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:36:23,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:36:23,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:36:23,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:36:23,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:36:23,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:36:23,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:36:23,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:36:23,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:36:23,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:36:23,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:36:23,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:36:23,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:36:23,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:36:23,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:36:23,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:36:23,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:36:23,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:36:23,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:36:23,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:36:23,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:36:23,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:36:23,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:36:23,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:36:23,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:36:23,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:36:23,574 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:36:23,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:36:23,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:36:23,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:36:23,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:36:23,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:36:23,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:36:23,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:36:23,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:36:23,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:36:23,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:36:23,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:36:23,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:36:23,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:36:23,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:36:23,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:36:23,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:23,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:36:23,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:36:23,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:36:23,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:36:23,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:36:23,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:36:23,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:36:23,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:36:23,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:36:23,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2021-12-21 13:36:23,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:36:23,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:36:23,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:36:23,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:36:23,838 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:36:23,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2021-12-21 13:36:23,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6c6cbf/84b9f6e627d047a79bcba2484517398d/FLAG3c2396576 [2021-12-21 13:36:24,451 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:36:24,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2021-12-21 13:36:24,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6c6cbf/84b9f6e627d047a79bcba2484517398d/FLAG3c2396576 [2021-12-21 13:36:24,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6c6cbf/84b9f6e627d047a79bcba2484517398d [2021-12-21 13:36:24,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:36:24,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:36:24,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:24,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:36:24,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:36:24,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:24" (1/1) ... [2021-12-21 13:36:24,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641329bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:24, skipping insertion in model container [2021-12-21 13:36:24,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:24" (1/1) ... [2021-12-21 13:36:24,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:36:25,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:36:25,195 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_ctm.4.c[1868,1881] [2021-12-21 13:36:25,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:25,685 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:36:25,699 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_ctm.4.c[1868,1881] [2021-12-21 13:36:25,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:26,012 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:36:26,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26 WrapperNode [2021-12-21 13:36:26,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:26,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:26,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:36:26,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:36:26,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,334 INFO L137 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8512 [2021-12-21 13:36:26,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:26,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:36:26,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:36:26,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:36:26,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:36:26,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:36:26,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:36:26,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:36:26,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (1/1) ... [2021-12-21 13:36:26,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:36:26,773 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) [2021-12-21 13:36:26,860 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 [2021-12-21 13:36:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-21 13:36:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-21 13:36:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-21 13:36:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-21 13:36:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:36:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-21 13:36:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-21 13:36:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-21 13:36:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-21 13:36:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-21 13:36:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-21 13:36:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-21 13:36:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-21 13:36:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-21 13:36:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-21 13:36:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-21 13:36:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-21 13:36:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-21 13:36:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-21 13:36:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-21 13:36:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-21 13:36:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:36:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-21 13:36:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-21 13:36:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-21 13:36:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-21 13:36:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-21 13:36:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-21 13:36:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-21 13:36:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-21 13:36:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-21 13:36:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-21 13:36:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-21 13:36:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-21 13:36:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-21 13:36:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-21 13:36:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:36:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-21 13:36:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-21 13:36:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-21 13:36:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-21 13:36:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-21 13:36:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-21 13:36:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-21 13:36:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-21 13:36:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-21 13:36:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-21 13:36:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-21 13:36:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-21 13:36:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-21 13:36:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-21 13:36:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-21 13:36:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-21 13:36:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-21 13:36:26,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-21 13:36:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-21 13:36:26,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-21 13:36:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-21 13:36:26,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-21 13:36:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-21 13:36:26,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-21 13:36:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-21 13:36:26,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-21 13:36:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-21 13:36:26,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-21 13:36:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-21 13:36:26,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-21 13:36:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-21 13:36:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-21 13:36:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-21 13:36:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-21 13:36:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-21 13:36:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-21 13:36:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-21 13:36:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-21 13:36:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-21 13:36:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-21 13:36:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-21 13:36:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-21 13:36:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-21 13:36:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-21 13:36:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-12-21 13:36:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-12-21 13:36:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-21 13:36:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-21 13:36:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-21 13:36:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-21 13:36:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-21 13:36:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-21 13:36:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:36:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-21 13:36:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-21 13:36:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:36:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:36:27,472 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:36:27,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:36:48,264 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:36:48,283 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:36:48,283 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 13:36:48,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:48 BoogieIcfgContainer [2021-12-21 13:36:48,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:36:48,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:36:48,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:36:48,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:36:48,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:36:24" (1/3) ... [2021-12-21 13:36:48,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e908f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:48, skipping insertion in model container [2021-12-21 13:36:48,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:26" (2/3) ... [2021-12-21 13:36:48,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e908f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:48, skipping insertion in model container [2021-12-21 13:36:48,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:48" (3/3) ... [2021-12-21 13:36:48,349 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2021-12-21 13:36:48,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:36:48,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:36:48,415 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:36:48,420 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 [2021-12-21 13:36:48,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:36:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 2469 states, 2115 states have (on average 1.4799054373522458) internal successors, (3130), 2139 states have internal predecessors, (3130), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2021-12-21 13:36:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 13:36:48,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:36:48,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:36:48,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:36:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:36:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1151272851, now seen corresponding path program 1 times [2021-12-21 13:36:48,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:36:48,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677521881] [2021-12-21 13:36:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:36:48,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms