./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 ff03de63 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-ff03de6 [2021-12-21 13:36:17,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:36:17,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:36:17,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:36:17,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:36:17,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:36:17,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:36:17,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:36:17,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:36:17,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:36:17,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:36:17,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:36:17,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:36:17,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:36:17,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:36:17,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:36:17,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:36:17,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:36:17,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:36:17,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:36:17,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:36:17,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:36:17,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:36:17,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:36:17,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:36:17,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:36:17,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:36:17,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:36:17,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:36:17,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:36:17,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:36:17,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:36:17,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:36:17,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:36:17,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:36:17,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:36:17,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:36:17,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:36:17,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:36:17,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:36:17,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:36:17,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:36:17,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:36:17,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:36:17,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:36:17,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:36:17,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:36:17,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:36:17,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:36:17,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:36:17,188 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:36:17,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:36:17,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:36:17,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:36:17,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:36:17,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:36:17,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:36:17,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:36:17,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:36:17,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:36:17,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:36:17,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:36:17,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:36:17,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:36:17,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:36:17,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:36:17,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:17,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:36:17,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:36:17,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:36:17,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:36:17,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:36:17,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:36:17,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:36:17,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:36:17,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:36:17,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d [2021-12-21 13:36:17,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:36:17,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:36:17,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:36:17,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:36:17,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:36:17,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2021-12-21 13:36:17,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8108255fc/19c2df9d0bab4dc992cc490cae7a7e9b/FLAG00617f218 [2021-12-21 13:36:18,140 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:36:18,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2021-12-21 13:36:18,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8108255fc/19c2df9d0bab4dc992cc490cae7a7e9b/FLAG00617f218 [2021-12-21 13:36:18,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8108255fc/19c2df9d0bab4dc992cc490cae7a7e9b [2021-12-21 13:36:18,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:36:18,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:36:18,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:18,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:36:18,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:36:18,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:18" (1/1) ... [2021-12-21 13:36:18,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443bc21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:18, skipping insertion in model container [2021-12-21 13:36:18,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:18" (1/1) ... [2021-12-21 13:36:18,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:36:18,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:36:18,643 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] [2021-12-21 13:36:19,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:19,115 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:36:19,127 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] [2021-12-21 13:36:19,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:19,407 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:36:19,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19 WrapperNode [2021-12-21 13:36:19,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:19,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:19,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:36:19,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:36:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,716 INFO L137 Inliner]: procedures = 99, calls = 2725, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 8221 [2021-12-21 13:36:19,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:19,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:36:19,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:36:19,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:36:19,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:19,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:20,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:20,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:36:20,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:36:20,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:36:20,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:36:20,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (1/1) ... [2021-12-21 13:36:20,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:20,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:36:20,073 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) [2021-12-21 13:36:20,084 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 [2021-12-21 13:36:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-12-21 13:36:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-12-21 13:36:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-12-21 13:36:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-12-21 13:36:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:36:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-12-21 13:36:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-12-21 13:36:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-21 13:36:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-21 13:36:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-21 13:36:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-21 13:36:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-12-21 13:36:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-12-21 13:36:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-21 13:36:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-21 13:36:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-12-21 13:36:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-12-21 13:36:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-12-21 13:36:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-12-21 13:36:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-12-21 13:36:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-12-21 13:36:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:36:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-21 13:36:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-21 13:36:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-12-21 13:36:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-12-21 13:36:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-12-21 13:36:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-12-21 13:36:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-12-21 13:36:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-12-21 13:36:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-12-21 13:36:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-12-21 13:36:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-12-21 13:36:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-12-21 13:36:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-21 13:36:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-21 13:36:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:36:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-21 13:36:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-21 13:36:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-12-21 13:36:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-12-21 13:36:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-12-21 13:36:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-12-21 13:36:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-12-21 13:36:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-12-21 13:36:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-21 13:36:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-21 13:36:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-12-21 13:36:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-12-21 13:36:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-21 13:36:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-21 13:36:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-12-21 13:36:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-12-21 13:36:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-12-21 13:36:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-12-21 13:36:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-21 13:36:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-21 13:36:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-12-21 13:36:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-12-21 13:36:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-12-21 13:36:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-12-21 13:36:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-12-21 13:36:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-12-21 13:36:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-21 13:36:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-12-21 13:36:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-12-21 13:36:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-12-21 13:36:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-12-21 13:36:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-12-21 13:36:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-12-21 13:36:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-12-21 13:36:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-12-21 13:36:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-12-21 13:36:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-12-21 13:36:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-12-21 13:36:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-12-21 13:36:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-12-21 13:36:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-12-21 13:36:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-12-21 13:36:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-12-21 13:36:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-12-21 13:36:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-12-21 13:36:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-12-21 13:36:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-12-21 13:36:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-12-21 13:36:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-12-21 13:36:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-12-21 13:36:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-12-21 13:36:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-12-21 13:36:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-21 13:36:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2021-12-21 13:36:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:36:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-12-21 13:36:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-12-21 13:36:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:36:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:36:20,777 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:36:20,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:36:35,112 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:36:35,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:36:35,149 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 13:36:35,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:35 BoogieIcfgContainer [2021-12-21 13:36:35,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:36:35,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:36:35,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:36:35,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:36:35,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:36:18" (1/3) ... [2021-12-21 13:36:35,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2884a5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:35, skipping insertion in model container [2021-12-21 13:36:35,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:19" (2/3) ... [2021-12-21 13:36:35,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2884a5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:35, skipping insertion in model container [2021-12-21 13:36:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:35" (3/3) ... [2021-12-21 13:36:35,162 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2021-12-21 13:36:35,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:36:35,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:36:35,233 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:36:35,241 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 [2021-12-21 13:36:35,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:36:35,313 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) [2021-12-21 13:36:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 13:36:35,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:36:35,326 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] [2021-12-21 13:36:35,327 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:36:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:36:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash -646402178, now seen corresponding path program 1 times [2021-12-21 13:36:35,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:36:35,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623510140] [2021-12-21 13:36:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:36:35,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms