./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.3-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:03:17,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:03:17,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:03:17,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:03:17,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:03:17,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:03:17,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:03:17,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:03:17,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:03:17,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:03:17,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:03:17,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:03:17,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:03:17,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:03:17,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:03:17,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:03:17,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:03:17,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:03:17,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:03:17,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:03:17,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:03:17,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:03:17,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:03:17,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:03:17,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:03:17,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:03:17,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:03:17,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:03:17,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:03:17,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:03:17,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:03:17,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:03:17,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:03:17,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:03:17,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:03:17,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:03:17,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:03:17,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:03:17,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:03:17,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:03:17,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:03:17,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:03:17,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:03:17,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:03:17,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:03:17,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:03:17,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:03:17,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:03:17,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:03:17,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:03:17,257 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:03:17,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:03:17,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:03:17,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:03:17,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:03:17,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:03:17,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:03:17,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:03:17,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:03:17,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:03:17,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:03:17,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:03:17,261 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:03:17,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:03:17,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:03:17,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:03:17,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2021-12-17 16:03:17,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:03:17,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:03:17,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:03:17,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:03:17,490 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:03:17,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2021-12-17 16:03:17,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8def68b8/49ce319042f94e1eb52836b187150d18/FLAGdbb3dfdc3 [2021-12-17 16:03:18,118 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:03:18,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2021-12-17 16:03:18,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8def68b8/49ce319042f94e1eb52836b187150d18/FLAGdbb3dfdc3 [2021-12-17 16:03:18,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8def68b8/49ce319042f94e1eb52836b187150d18 [2021-12-17 16:03:18,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:03:18,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:03:18,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:03:18,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:03:18,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:03:18,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:18" (1/1) ... [2021-12-17 16:03:18,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493e6784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:18, skipping insertion in model container [2021-12-17 16:03:18,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:18" (1/1) ... [2021-12-17 16:03:18,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:03:18,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:03:18,688 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.3-2.c[1871,1884] [2021-12-17 16:03:19,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:03:19,213 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:03:19,222 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.3-2.c[1871,1884] [2021-12-17 16:03:19,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:03:19,455 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:03:19,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19 WrapperNode [2021-12-17 16:03:19,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:03:19,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:03:19,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:03:19,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:03:19,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:19,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:19,896 INFO L137 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2021-12-17 16:03:19,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:03:19,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:03:19,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:03:19,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:03:19,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:19,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:19,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:03:20,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:03:20,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:03:20,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:03:20,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (1/1) ... [2021-12-17 16:03:20,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:03:20,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:03:20,255 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) [2021-12-17 16:03:20,328 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 [2021-12-17 16:03:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-17 16:03:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-17 16:03:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-17 16:03:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-17 16:03:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 16:03:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-17 16:03:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-17 16:03:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 16:03:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 16:03:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-17 16:03:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-17 16:03:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-17 16:03:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-17 16:03:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-17 16:03:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-17 16:03:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-17 16:03:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-17 16:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-17 16:03:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-17 16:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-17 16:03:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-17 16:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 16:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 16:03:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 16:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-17 16:03:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-17 16:03:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-17 16:03:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-17 16:03:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-17 16:03:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-17 16:03:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-17 16:03:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-17 16:03:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-17 16:03:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-17 16:03:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 16:03:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 16:03:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:03:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 16:03:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 16:03:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-17 16:03:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-17 16:03:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-17 16:03:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-17 16:03:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-17 16:03:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-17 16:03:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 16:03:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 16:03:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-17 16:03:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-17 16:03:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 16:03:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 16:03:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-17 16:03:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-17 16:03:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-17 16:03:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-17 16:03:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-17 16:03:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-17 16:03:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-17 16:03:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-17 16:03:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-17 16:03:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-17 16:03:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-17 16:03:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-17 16:03:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-17 16:03:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-17 16:03:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-17 16:03:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-17 16:03:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-17 16:03:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-17 16:03:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-17 16:03:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-17 16:03:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-17 16:03:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-17 16:03:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-17 16:03:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-17 16:03:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-17 16:03:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-17 16:03:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-17 16:03:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-17 16:03:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-17 16:03:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-17 16:03:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-12-17 16:03:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-12-17 16:03:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-17 16:03:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-17 16:03:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-17 16:03:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-17 16:03:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-17 16:03:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-17 16:03:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:03:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-17 16:03:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-17 16:03:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:03:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:03:20,959 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:03:20,961 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:03:37,047 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:03:37,098 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:03:37,098 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 16:03:37,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:03:37 BoogieIcfgContainer [2021-12-17 16:03:37,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:03:37,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:03:37,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:03:37,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:03:37,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:03:18" (1/3) ... [2021-12-17 16:03:37,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c70c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:03:37, skipping insertion in model container [2021-12-17 16:03:37,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:19" (2/3) ... [2021-12-17 16:03:37,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c70c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:03:37, skipping insertion in model container [2021-12-17 16:03:37,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:03:37" (3/3) ... [2021-12-17 16:03:37,122 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2021-12-17 16:03:37,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:03:37,127 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:03:37,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:03:37,197 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 [2021-12-17 16:03:37,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:03:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2113 states have (on average 1.4803596781826787) internal successors, (3128), 2137 states have internal predecessors, (3128), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2021-12-17 16:03:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 16:03:37,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:03:37,281 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] [2021-12-17 16:03:37,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:03:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:03:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2021-12-17 16:03:37,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:03:37,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263920977] [2021-12-17 16:03:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:03:37,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms