./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.3-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:58:05,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:58:05,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:58:05,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:58:05,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:58:05,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:58:05,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:58:05,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:58:05,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:58:05,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:58:05,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:58:05,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:58:05,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:58:05,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:58:05,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:58:05,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:58:05,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:58:05,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:58:05,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:58:05,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:58:05,587 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:58:05,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:58:05,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:58:05,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:58:05,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:58:05,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:58:05,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:58:05,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:58:05,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:58:05,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:58:05,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:58:05,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:58:05,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:58:05,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:58:05,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:58:05,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:58:05,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:58:05,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:58:05,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:58:05,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:58:05,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:58:05,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:58:05,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:58:05,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:58:05,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:58:05,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:58:05,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:58:05,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:58:05,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:58:05,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:58:05,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:58:05,638 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:58:05,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:58:05,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:58:05,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:58:05,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:58:05,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:58:05,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:58:05,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:58:05,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:58:05,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:58:05,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:58:05,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:58:05,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:58:05,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:58:05,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:58:05,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:58:05,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:58:05,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:58:05,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:58:05,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:58:05,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:58:05,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:58:05,644 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:58:05,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:58:05,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:58:05,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 [2022-07-19 17:58:05,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:58:05,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:58:05,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:58:05,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:58:05,906 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:58:05,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-07-19 17:58:05,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a29dd55/c17d978fb9204f96bf5103a6c5e9251c/FLAGccd951c02 [2022-07-19 17:58:06,608 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:58:06,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-07-19 17:58:06,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a29dd55/c17d978fb9204f96bf5103a6c5e9251c/FLAGccd951c02 [2022-07-19 17:58:06,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a29dd55/c17d978fb9204f96bf5103a6c5e9251c [2022-07-19 17:58:06,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:58:06,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:58:06,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:58:06,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:58:06,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:58:06,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:58:06" (1/1) ... [2022-07-19 17:58:06,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13460d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:06, skipping insertion in model container [2022-07-19 17:58:06,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:58:06" (1/1) ... [2022-07-19 17:58:06,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:58:07,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:58:07,234 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.3-1.c[1870,1883] [2022-07-19 17:58:07,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:58:07,783 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:58:07,795 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.3-1.c[1870,1883] [2022-07-19 17:58:08,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:58:08,057 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:58:08,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08 WrapperNode [2022-07-19 17:58:08,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:58:08,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:58:08,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:58:08,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:58:08,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,358 INFO L137 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-07-19 17:58:08,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:58:08,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:58:08,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:58:08,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:58:08,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:58:08,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:58:08,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:58:08,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:58:08,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (1/1) ... [2022-07-19 17:58:08,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:58:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:58:08,740 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) [2022-07-19 17:58:08,761 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 [2022-07-19 17:58:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-07-19 17:58:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-07-19 17:58:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-07-19 17:58:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-07-19 17:58:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 17:58:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-07-19 17:58:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-07-19 17:58:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-19 17:58:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-19 17:58:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-07-19 17:58:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-07-19 17:58:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-07-19 17:58:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-07-19 17:58:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-07-19 17:58:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-07-19 17:58:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-07-19 17:58:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-07-19 17:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-07-19 17:58:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-07-19 17:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-07-19 17:58:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-07-19 17:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 17:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-19 17:58:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-19 17:58:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-07-19 17:58:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-07-19 17:58:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-07-19 17:58:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-07-19 17:58:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-07-19 17:58:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-07-19 17:58:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-07-19 17:58:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-07-19 17:58:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-07-19 17:58:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-07-19 17:58:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-19 17:58:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-19 17:58:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:58:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-19 17:58:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-19 17:58:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-07-19 17:58:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-07-19 17:58:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-07-19 17:58:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-07-19 17:58:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-07-19 17:58:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-07-19 17:58:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-19 17:58:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-19 17:58:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-07-19 17:58:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-07-19 17:58:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-19 17:58:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-19 17:58:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-07-19 17:58:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-07-19 17:58:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-07-19 17:58:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-07-19 17:58:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-07-19 17:58:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-07-19 17:58:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-07-19 17:58:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-07-19 17:58:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-07-19 17:58:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-07-19 17:58:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-07-19 17:58:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-07-19 17:58:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-19 17:58:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-19 17:58:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-07-19 17:58:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-07-19 17:58:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-07-19 17:58:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-07-19 17:58:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-07-19 17:58:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-07-19 17:58:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-07-19 17:58:08,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-07-19 17:58:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-07-19 17:58:08,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-07-19 17:58:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-07-19 17:58:08,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-07-19 17:58:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-07-19 17:58:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-07-19 17:58:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-07-19 17:58:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-07-19 17:58:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-07-19 17:58:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-07-19 17:58:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-07-19 17:58:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-07-19 17:58:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-07-19 17:58:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-07-19 17:58:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-07-19 17:58:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-07-19 17:58:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:58:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-07-19 17:58:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-07-19 17:58:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:58:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:58:09,395 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:58:09,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:58:26,533 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:58:26,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:58:26,563 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 17:58:26,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:58:26 BoogieIcfgContainer [2022-07-19 17:58:26,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:58:26,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:58:26,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:58:26,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:58:26,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:58:06" (1/3) ... [2022-07-19 17:58:26,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e2998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:58:26, skipping insertion in model container [2022-07-19 17:58:26,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:58:08" (2/3) ... [2022-07-19 17:58:26,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5e2998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:58:26, skipping insertion in model container [2022-07-19 17:58:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:58:26" (3/3) ... [2022-07-19 17:58:26,576 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-1.c [2022-07-19 17:58:26,588 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:58:26,588 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:58:26,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:58:26,689 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@16893c2a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d73a310 [2022-07-19 17:58:26,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:58:26,703 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) [2022-07-19 17:58:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 17:58:26,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:58:26,720 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] [2022-07-19 17:58:26,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:58:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:58:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2022-07-19 17:58:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:58:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971258734] [2022-07-19 17:58:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:58:26,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms