./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_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-e19ca92 [2021-12-22 11:57:29,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:57:29,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:57:29,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:57:29,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:57:29,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:57:29,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:57:29,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:57:29,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:57:29,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:57:29,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:57:29,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:57:29,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:57:29,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:57:29,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:57:29,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:57:29,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:57:29,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:57:29,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:57:29,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:57:29,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:57:29,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:57:29,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:57:29,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:57:29,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:57:29,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:57:29,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:57:29,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:57:29,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:57:29,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:57:29,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:57:29,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:57:29,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:57:29,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:57:29,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:57:29,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:57:29,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:57:29,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:57:29,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:57:29,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:57:29,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:57:29,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:57:29,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:57:29,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:57:29,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:57:29,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:57:29,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:57:29,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:57:29,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:57:29,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:57:29,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:57:29,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:57:29,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:57:29,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:57:29,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:57:29,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:29,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:57:29,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:57:29,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:57:29,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:57:29,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:57:29,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:57:29,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:57:29,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:57:29,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:57:29,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdfe8cdf5ef6acb015ae980f200d66be6855e21e0a93c803bebabec43209e961 [2021-12-22 11:57:30,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:57:30,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:57:30,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:57:30,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:57:30,036 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:57:30,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2021-12-22 11:57:30,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8413d3f1e/6a95f910a6b245139e436d0499c604ea/FLAG99ef7f0ae [2021-12-22 11:57:30,630 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:57:30,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2021-12-22 11:57:30,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8413d3f1e/6a95f910a6b245139e436d0499c604ea/FLAG99ef7f0ae [2021-12-22 11:57:31,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8413d3f1e/6a95f910a6b245139e436d0499c604ea [2021-12-22 11:57:31,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:57:31,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:57:31,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:31,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:57:31,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:57:31,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:31,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e28b7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31, skipping insertion in model container [2021-12-22 11:57:31,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:31,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:57:31,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:57:31,362 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] [2021-12-22 11:57:31,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:31,804 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:57:31,816 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] [2021-12-22 11:57:31,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:31,981 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:57:31,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31 WrapperNode [2021-12-22 11:57:31,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:31,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:31,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:57:31,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:57:31,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,171 INFO L137 Inliner]: procedures = 99, calls = 2724, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8254 [2021-12-22 11:57:32,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:32,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:57:32,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:57:32,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:57:32,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:57:32,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:57:32,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:57:32,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:57:32,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (1/1) ... [2021-12-22 11:57:32,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:57:32,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 11:57:32,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 11:57:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-22 11:57:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-22 11:57:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-22 11:57:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-22 11:57:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:57:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:57:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:57:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-22 11:57:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-22 11:57:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-22 11:57:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-22 11:57:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-22 11:57:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-22 11:57:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:57:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:57:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:57:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-22 11:57:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-22 11:57:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-22 11:57:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-22 11:57:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-22 11:57:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-22 11:57:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-22 11:57:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-22 11:57:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-22 11:57:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-22 11:57:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:57:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:57:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:57:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:57:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:57:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-22 11:57:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-22 11:57:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-22 11:57:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-22 11:57:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:57:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:57:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-22 11:57:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-22 11:57:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:57:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:57:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-22 11:57:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-22 11:57:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-22 11:57:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-22 11:57:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-22 11:57:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-22 11:57:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-22 11:57:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-22 11:57:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-22 11:57:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-22 11:57:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-22 11:57:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-22 11:57:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-22 11:57:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-22 11:57:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-22 11:57:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-22 11:57:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-22 11:57:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-22 11:57:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-22 11:57:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-22 11:57:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-22 11:57:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-22 11:57:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-22 11:57:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-22 11:57:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-22 11:57:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-22 11:57:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-22 11:57:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-22 11:57:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-22 11:57:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-22 11:57:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:57:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:57:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:57:33,035 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:57:33,037 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:57:45,409 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:57:45,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:57:45,436 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 11:57:45,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:45 BoogieIcfgContainer [2021-12-22 11:57:45,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:57:45,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:57:45,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:57:45,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:57:45,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:57:31" (1/3) ... [2021-12-22 11:57:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7756bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:45, skipping insertion in model container [2021-12-22 11:57:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:31" (2/3) ... [2021-12-22 11:57:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7756bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:45, skipping insertion in model container [2021-12-22 11:57:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:45" (3/3) ... [2021-12-22 11:57:45,445 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-1.c [2021-12-22 11:57:45,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:57:45,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:57:45,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:57:45,507 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 11:57:45,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:57:45,567 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) [2021-12-22 11:57:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-22 11:57:45,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:57:45,587 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] [2021-12-22 11:57:45,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:57:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:57:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -134003326, now seen corresponding path program 1 times [2021-12-22 11:57:45,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:57:45,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271064658] [2021-12-22 11:57:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:57:45,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms