./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdfe8cdf5ef6acb015ae980f200d66be6855e21e0a93c803bebabec43209e961 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:17:19,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:17:19,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:17:19,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:17:19,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:17:19,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:17:19,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:17:19,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:17:19,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:17:19,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:17:19,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:17:19,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:17:19,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:17:19,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:17:19,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:17:19,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:17:19,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:17:19,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:17:19,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:17:19,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:17:19,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:17:19,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:17:19,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:17:19,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:17:19,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:17:19,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:17:19,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:17:19,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:17:19,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:17:19,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:17:19,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:17:19,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:17:19,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:17:19,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:17:19,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:17:19,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:17:19,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:17:19,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:17:19,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:17:19,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:17:19,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:17:19,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:17:19,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:17:19,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:17:19,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:17:19,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:17:19,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:17:19,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:17:19,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:17:19,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:17:19,405 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:17:19,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:17:19,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:17:19,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:17:19,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:17:19,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:17:19,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:17:19,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:17:19,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:17:19,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:17:19,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:19,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:17:19,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:17:19,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:17:19,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdfe8cdf5ef6acb015ae980f200d66be6855e21e0a93c803bebabec43209e961 [2021-12-28 01:17:19,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:17:19,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:17:19,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:17:19,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:17:19,689 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:17:19,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2021-12-28 01:17:19,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a8b192a/45740d109c5a43f1b5269a7861521abb/FLAG53389d51b [2021-12-28 01:17:20,296 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:17:20,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2021-12-28 01:17:20,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a8b192a/45740d109c5a43f1b5269a7861521abb/FLAG53389d51b [2021-12-28 01:17:20,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a8b192a/45740d109c5a43f1b5269a7861521abb [2021-12-28 01:17:20,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:17:20,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:17:20,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:20,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:17:20,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:17:20,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:20" (1/1) ... [2021-12-28 01:17:20,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9d155c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:20, skipping insertion in model container [2021-12-28 01:17:20,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:20" (1/1) ... [2021-12-28 01:17:20,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:17:20,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:17:20,781 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.2-1.c[1871,1884] [2021-12-28 01:17:21,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:21,247 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:17:21,259 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.2-1.c[1871,1884] [2021-12-28 01:17:21,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:21,550 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:17:21,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21 WrapperNode [2021-12-28 01:17:21,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:21,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:21,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:17:21,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:17:21,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:21,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:21,835 INFO L137 Inliner]: procedures = 99, calls = 2724, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8254 [2021-12-28 01:17:21,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:21,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:17:21,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:17:21,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:17:21,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:21,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:21,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:21,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:22,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:22,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:22,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:22,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:17:22,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:17:22,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:17:22,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:17:22,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (1/1) ... [2021-12-28 01:17:22,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:22,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:17:22,252 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) [2021-12-28 01:17:22,271 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 [2021-12-28 01:17:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-28 01:17:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-28 01:17:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-28 01:17:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-28 01:17:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 01:17:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-28 01:17:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-28 01:17:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-28 01:17:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-28 01:17:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-28 01:17:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-28 01:17:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-28 01:17:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-28 01:17:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-28 01:17:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-28 01:17:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-28 01:17:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-28 01:17:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-28 01:17:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-28 01:17:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-28 01:17:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-28 01:17:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 01:17:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-28 01:17:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-28 01:17:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-28 01:17:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-28 01:17:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-28 01:17:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-28 01:17:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-28 01:17:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-28 01:17:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-28 01:17:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-28 01:17:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-28 01:17:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-28 01:17:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-28 01:17:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-28 01:17:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:17:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-28 01:17:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-28 01:17:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-28 01:17:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-28 01:17:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-28 01:17:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-28 01:17:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-28 01:17:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-28 01:17:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-28 01:17:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-28 01:17:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-28 01:17:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-28 01:17:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-28 01:17:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-28 01:17:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-28 01:17:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-28 01:17:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-28 01:17:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-28 01:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-28 01:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-28 01:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-28 01:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-28 01:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-28 01:17:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-28 01:17:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-28 01:17:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-28 01:17:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-28 01:17:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-28 01:17:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-28 01:17:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-28 01:17:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-28 01:17:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-28 01:17:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-28 01:17:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-28 01:17:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-28 01:17:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-28 01:17:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-28 01:17:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-28 01:17:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-28 01:17:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-28 01:17:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-28 01:17:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:17:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-28 01:17:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-28 01:17:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:17:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:17:22,855 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:17:22,857 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:17:35,262 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:17:35,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:17:35,293 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-28 01:17:35,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:35 BoogieIcfgContainer [2021-12-28 01:17:35,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:17:35,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:17:35,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:17:35,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:17:35,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:17:20" (1/3) ... [2021-12-28 01:17:35,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589e40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:35, skipping insertion in model container [2021-12-28 01:17:35,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:21" (2/3) ... [2021-12-28 01:17:35,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589e40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:35, skipping insertion in model container [2021-12-28 01:17:35,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:35" (3/3) ... [2021-12-28 01:17:35,303 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-1.c [2021-12-28 01:17:35,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:17:35,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:17:35,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:17:35,367 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 [2021-12-28 01:17:35,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:17:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 2453 states, 2105 states have (on average 1.4807600950118764) internal successors, (3117), 2129 states have internal predecessors, (3117), 302 states have call successors, (302), 44 states have call predecessors, (302), 44 states have return successors, (302), 292 states have call predecessors, (302), 302 states have call successors, (302) [2021-12-28 01:17:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 01:17:35,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:17:35,438 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] [2021-12-28 01:17:35,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:17:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:17:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -134003326, now seen corresponding path program 1 times [2021-12-28 01:17:35,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:17:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616202872] [2021-12-28 01:17:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:17:35,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms