./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 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.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-dev-e19ca92 [2021-12-22 11:57:35,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:57:35,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:57:35,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:57:35,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:57:35,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:57:35,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:57:35,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:57:35,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:57:35,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:57:35,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:57:35,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:57:35,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:57:35,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:57:35,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:57:35,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:57:35,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:57:35,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:57:35,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:57:35,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:57:35,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:57:35,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:57:35,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:57:35,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:57:35,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:57:35,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:57:35,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:57:35,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:57:35,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:57:35,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:57:35,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:57:35,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:57:35,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:57:35,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:57:35,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:57:35,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:57:35,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:57:35,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:57:35,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:57:35,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:57:35,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:57:35,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:57:35,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:57:35,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:57:35,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:57:35,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:57:35,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:57:35,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:57:35,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:57:35,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:57:35,579 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:57:35,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:57:35,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:57:35,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:57:35,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:57:35,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:57:35,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:57:35,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:57:35,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:57:35,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:57:35,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:57:35,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:57:35,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:57:35,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:57:35,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:57:35,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:57:35,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:35,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:57:35,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:57:35,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:57:35,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:57:35,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:57:35,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:57:35,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:57:35,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:57:35,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:57:35,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2021-12-22 11:57:35,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:57:35,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:57:35,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:57:35,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:57:35,868 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:57:35,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2021-12-22 11:57:35,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423679e9/43d651d672ee42f9b24c17edb135ceec/FLAG8ecf0b3fc [2021-12-22 11:57:36,522 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:57:36,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2021-12-22 11:57:36,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423679e9/43d651d672ee42f9b24c17edb135ceec/FLAG8ecf0b3fc [2021-12-22 11:57:36,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423679e9/43d651d672ee42f9b24c17edb135ceec [2021-12-22 11:57:36,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:57:36,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:57:36,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:36,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:57:36,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:57:36,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:36" (1/1) ... [2021-12-22 11:57:36,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fd55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:36, skipping insertion in model container [2021-12-22 11:57:36,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:36" (1/1) ... [2021-12-22 11:57:36,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:57:37,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:57:37,250 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] [2021-12-22 11:57:37,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:37,790 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:57:37,802 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] [2021-12-22 11:57:38,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:38,072 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:57:38,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38 WrapperNode [2021-12-22 11:57:38,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:38,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:38,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:57:38,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:57:38,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,375 INFO L137 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2021-12-22 11:57:38,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:57:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:57:38,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:57:38,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:57:38,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:57:38,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:57:38,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:57:38,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (1/1) ... [2021-12-22 11:57:38,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:57:38,837 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 11:57:38,840 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 11:57:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-22 11:57:38,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-22 11:57:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-22 11:57:38,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-22 11:57:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:57:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:38,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:57:38,872 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:57:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:38,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-22 11:57:38,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-22 11:57:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-22 11:57:38,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-22 11:57:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-22 11:57:38,873 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-22 11:57:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:38,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:38,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:57:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:57:38,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:57:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-22 11:57:38,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-22 11:57:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-22 11:57:38,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-22 11:57:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-22 11:57:38,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-22 11:57:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-22 11:57:38,875 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-22 11:57:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-22 11:57:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-22 11:57:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:57:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:57:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:57:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-22 11:57:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:57:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-22 11:57:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-22 11:57:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-22 11:57:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-22 11:57:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-22 11:57:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-22 11:57:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:57:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:57:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:57:39,405 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:57:39,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:57:57,581 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:57:57,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:57:57,611 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 11:57:57,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:57 BoogieIcfgContainer [2021-12-22 11:57:57,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:57:57,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:57:57,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:57:57,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:57:57,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:57:36" (1/3) ... [2021-12-22 11:57:57,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cfb842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:57, skipping insertion in model container [2021-12-22 11:57:57,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:38" (2/3) ... [2021-12-22 11:57:57,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cfb842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:57, skipping insertion in model container [2021-12-22 11:57:57,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:57" (3/3) ... [2021-12-22 11:57:57,625 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2021-12-22 11:57:57,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:57:57,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:57:57,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:57:57,686 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 11:57:57,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:57:57,743 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) [2021-12-22 11:57:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-22 11:57:57,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:57:57,757 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 11:57:57,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:57:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:57:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2021-12-22 11:57:57,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:57:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650501032] [2021-12-22 11:57:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:57:57,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms