./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.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.2-2.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 f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:57:30,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:57:30,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:57:30,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:57:30,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:57:30,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:57:30,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:57:30,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:57:30,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:57:30,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:57:30,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:57:30,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:57:30,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:57:30,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:57:30,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:57:30,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:57:30,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:57:30,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:57:30,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:57:30,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:57:30,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:57:30,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:57:30,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:57:30,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:57:30,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:57:30,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:57:30,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:57:30,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:57:30,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:57:30,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:57:30,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:57:30,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:57:30,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:57:30,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:57:30,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:57:30,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:57:30,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:57:30,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:57:30,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:57:30,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:57:30,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:57:30,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:57:30,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:57:30,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:57:30,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:57:30,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:57:30,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:57:30,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:57:30,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:57:30,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:57:30,966 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:57:30,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:57:30,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:57:30,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:57:30,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:57:30,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:57:30,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:57:30,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:57:30,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:57:30,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:57:30,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:57:30,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:30,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:57:30,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:57:30,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:57:30,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:57:30,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:57:30,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:57:30,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:57:30,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:57:30,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:57:30,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d [2021-12-22 11:57:31,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:57:31,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:57:31,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:57:31,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:57:31,221 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:57:31,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2021-12-22 11:57:31,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d23e452b/0487bb9128f947f88d323dc61bef4181/FLAG260089d04 [2021-12-22 11:57:31,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:57:31,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2021-12-22 11:57:31,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d23e452b/0487bb9128f947f88d323dc61bef4181/FLAG260089d04 [2021-12-22 11:57:32,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d23e452b/0487bb9128f947f88d323dc61bef4181 [2021-12-22 11:57:32,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:57:32,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:57:32,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:32,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:57:32,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:57:32,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:32,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2039ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32, skipping insertion in model container [2021-12-22 11:57:32,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:32,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:57:32,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:57:32,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2021-12-22 11:57:32,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:32,718 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:57:32,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2021-12-22 11:57:32,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:32,874 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:57:32,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32 WrapperNode [2021-12-22 11:57:32,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:32,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:32,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:57:32,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:57:32,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:32,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,071 INFO L137 Inliner]: procedures = 99, calls = 2725, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 8221 [2021-12-22 11:57:33,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:33,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:57:33,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:57:33,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:57:33,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:57:33,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:57:33,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:57:33,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:57:33,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (1/1) ... [2021-12-22 11:57:33,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:57:33,433 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 11:57:33,449 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 11:57:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-22 11:57:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-22 11:57:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-22 11:57:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-22 11:57:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:57:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-22 11:57:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:57:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:57:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-22 11:57:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-22 11:57:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-22 11:57:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-22 11:57:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-22 11:57:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-22 11:57:33,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-22 11:57:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:33,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-22 11:57:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:33,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-22 11:57:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:57:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:57:33,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:57:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-22 11:57:33,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-22 11:57:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-22 11:57:33,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-22 11:57:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-22 11:57:33,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-22 11:57:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-22 11:57:33,471 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-22 11:57:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-22 11:57:33,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-22 11:57:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:57:33,471 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:57:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:57:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:57:33,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:57:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:33,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-22 11:57:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-22 11:57:33,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-22 11:57:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-22 11:57:33,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-22 11:57:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:57:33,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:57:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-22 11:57:33,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-22 11:57:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:57:33,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:57:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-22 11:57:33,474 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-22 11:57:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-22 11:57:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-22 11:57:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-22 11:57:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-22 11:57:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-22 11:57:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-22 11:57:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-22 11:57:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-22 11:57:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-22 11:57:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-22 11:57:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-22 11:57:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-22 11:57:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-22 11:57:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-22 11:57:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-22 11:57:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-22 11:57:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:33,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-22 11:57:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-22 11:57:33,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-22 11:57:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-22 11:57:33,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-22 11:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-22 11:57:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-22 11:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-22 11:57:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-22 11:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-12-22 11:57:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-12-22 11:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-22 11:57:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-22 11:57:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-22 11:57:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-22 11:57:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-22 11:57:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-22 11:57:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-22 11:57:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:57:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-22 11:57:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:57:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:57:33,979 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:57:33,981 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:57:47,920 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:57:47,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:57:47,944 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 11:57:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:47 BoogieIcfgContainer [2021-12-22 11:57:47,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:57:47,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:57:47,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:57:47,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:57:47,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:57:32" (1/3) ... [2021-12-22 11:57:47,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c8b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:47, skipping insertion in model container [2021-12-22 11:57:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:32" (2/3) ... [2021-12-22 11:57:47,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c8b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:57:47, skipping insertion in model container [2021-12-22 11:57:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:57:47" (3/3) ... [2021-12-22 11:57:47,956 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2021-12-22 11:57:47,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:57:47,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:57:48,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:57:48,012 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 11:57:48,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:57:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 2460 states, 2109 states have (on average 1.4803224276908487) internal successors, (3122), 2133 states have internal predecessors, (3122), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2021-12-22 11:57:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-22 11:57:48,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:57:48,080 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 11:57:48,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:57:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:57:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -646402178, now seen corresponding path program 1 times [2021-12-22 11:57:48,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:57:48,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852070003] [2021-12-22 11:57:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:57:48,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms