./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 35987657 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-?-3598765 [2022-07-21 05:34:34,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:34:34,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:34:34,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:34:34,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:34:34,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:34:34,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:34:34,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:34:34,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:34:34,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:34:34,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:34:34,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:34:34,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:34:34,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:34:34,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:34:34,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:34:34,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:34:34,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:34:34,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:34:34,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:34:34,563 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:34:34,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:34:34,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:34:34,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:34:34,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:34:34,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:34:34,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:34:34,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:34:34,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:34:34,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:34:34,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:34:34,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:34:34,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:34:34,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:34:34,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:34:34,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:34:34,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:34:34,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:34:34,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:34:34,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:34:34,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:34:34,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:34:34,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:34:34,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:34:34,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:34:34,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:34:34,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:34:34,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:34:34,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:34:34,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:34:34,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:34:34,620 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:34:34,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:34:34,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:34:34,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:34:34,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:34:34,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:34:34,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:34:34,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:34:34,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:34:34,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:34:34,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:34:34,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:34:34,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:34:34,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:34:34,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:34:34,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:34:34,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:34:34,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:34:34,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:34:34,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:34:34,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2022-07-21 05:34:34,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:34:34,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:34:34,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:34:34,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:34:34,984 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:34:34,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-07-21 05:34:35,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69408cb38/884ecb415ef343ff843b8037023598d0/FLAG1db3ebaa1 [2022-07-21 05:34:35,687 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:34:35,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-07-21 05:34:35,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69408cb38/884ecb415ef343ff843b8037023598d0/FLAG1db3ebaa1 [2022-07-21 05:34:35,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69408cb38/884ecb415ef343ff843b8037023598d0 [2022-07-21 05:34:35,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:34:35,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:34:35,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:34:35,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:34:35,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:34:35,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:34:35" (1/1) ... [2022-07-21 05:34:35,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa2f099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:35, skipping insertion in model container [2022-07-21 05:34:35,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:34:35" (1/1) ... [2022-07-21 05:34:35,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:34:36,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:34:36,154 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] [2022-07-21 05:34:36,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:34:36,642 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:34:36,656 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] [2022-07-21 05:34:36,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:34:36,929 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:34:36,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36 WrapperNode [2022-07-21 05:34:36,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:34:36,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:34:36,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:34:36,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:34:36,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,282 INFO L137 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-07-21 05:34:37,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:34:37,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:34:37,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:34:37,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:34:37,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:34:37,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:34:37,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:34:37,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:34:37,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (1/1) ... [2022-07-21 05:34:37,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:34:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:34:37,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:34:37,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:34:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-07-21 05:34:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-07-21 05:34:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-07-21 05:34:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-07-21 05:34:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 05:34:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-07-21 05:34:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-07-21 05:34:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-21 05:34:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-21 05:34:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-07-21 05:34:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-07-21 05:34:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-07-21 05:34:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-07-21 05:34:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-07-21 05:34:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-07-21 05:34:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-07-21 05:34:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-07-21 05:34:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-07-21 05:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-07-21 05:34:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-07-21 05:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-07-21 05:34:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 05:34:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:34:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-07-21 05:34:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-07-21 05:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-07-21 05:34:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-07-21 05:34:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-07-21 05:34:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-07-21 05:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-07-21 05:34:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-07-21 05:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-07-21 05:34:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-07-21 05:34:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-21 05:34:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-21 05:34:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:34:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-21 05:34:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-21 05:34:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-07-21 05:34:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-07-21 05:34:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-07-21 05:34:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-07-21 05:34:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-07-21 05:34:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-07-21 05:34:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-21 05:34:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-21 05:34:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-07-21 05:34:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-07-21 05:34:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-21 05:34:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-21 05:34:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-07-21 05:34:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-07-21 05:34:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-07-21 05:34:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-07-21 05:34:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-07-21 05:34:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-07-21 05:34:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-07-21 05:34:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-07-21 05:34:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-07-21 05:34:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-07-21 05:34:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-07-21 05:34:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-07-21 05:34:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-21 05:34:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-21 05:34:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-07-21 05:34:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-07-21 05:34:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-07-21 05:34:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-07-21 05:34:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-07-21 05:34:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-07-21 05:34:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-07-21 05:34:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-07-21 05:34:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-07-21 05:34:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-07-21 05:34:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-07-21 05:34:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-07-21 05:34:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-07-21 05:34:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-07-21 05:34:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-07-21 05:34:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-07-21 05:34:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-07-21 05:34:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-07-21 05:34:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-07-21 05:34:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-07-21 05:34:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-07-21 05:34:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-07-21 05:34:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-07-21 05:34:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-07-21 05:34:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:34:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-07-21 05:34:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-07-21 05:34:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:34:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:34:38,447 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:34:38,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:34:55,699 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:34:55,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:34:55,726 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 05:34:55,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:34:55 BoogieIcfgContainer [2022-07-21 05:34:55,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:34:55,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:34:55,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:34:55,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:34:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:34:35" (1/3) ... [2022-07-21 05:34:55,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dec4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:34:55, skipping insertion in model container [2022-07-21 05:34:55,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:34:36" (2/3) ... [2022-07-21 05:34:55,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dec4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:34:55, skipping insertion in model container [2022-07-21 05:34:55,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:34:55" (3/3) ... [2022-07-21 05:34:55,739 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2022-07-21 05:34:55,751 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:34:55,751 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:34:55,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:34:55,845 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@144f3a4e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@692eb705 [2022-07-21 05:34:55,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:34:55,857 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) [2022-07-21 05:34:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 05:34:55,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:34:55,876 INFO L195 NwaCegarLoop]: 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] [2022-07-21 05:34:55,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:34:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:34:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2022-07-21 05:34:55,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:34:55,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907485308] [2022-07-21 05:34:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:34:55,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms