./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/rekcba_nxt.2.M1-2.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 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:35:48,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:35:48,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:35:48,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:35:48,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:35:48,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:35:48,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:35:48,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:35:48,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:35:48,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:35:48,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:35:48,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:35:48,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:35:48,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:35:48,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:35:48,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:35:48,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:35:48,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:35:48,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:35:48,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:35:48,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:35:48,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:35:48,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:35:48,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:35:48,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:35:48,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:35:48,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:35:48,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:35:48,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:35:48,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:35:48,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:35:48,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:35:48,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:35:48,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:35:48,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:35:48,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:35:48,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:35:48,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:35:48,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:35:48,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:35:48,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:35:48,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:35:48,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:35:48,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:35:48,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:35:48,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:35:48,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:35:48,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:35:48,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:35:48,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:35:48,253 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:35:48,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:35:48,254 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:35:48,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:35:48,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:35:48,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:35:48,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:35:48,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:35:48,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:35:48,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:35:48,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:35:48,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:35:48,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:35:48,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:35:48,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:35:48,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:35:48,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:48,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:35:48,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:35:48,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:35:48,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:35:48,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:35:48,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:35:48,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:35:48,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:35:48,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b [2022-02-20 18:35:48,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:35:48,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:35:48,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:35:48,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:35:48,513 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:35:48,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-02-20 18:35:48,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27b82adb/e72217ffb9cf426fbc56b24581651138/FLAGd01ec7378 [2022-02-20 18:35:49,013 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:35:49,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-02-20 18:35:49,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27b82adb/e72217ffb9cf426fbc56b24581651138/FLAGd01ec7378 [2022-02-20 18:35:49,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27b82adb/e72217ffb9cf426fbc56b24581651138 [2022-02-20 18:35:49,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:35:49,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:35:49,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:49,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:35:49,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:35:49,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:49" (1/1) ... [2022-02-20 18:35:49,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1090036f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:49, skipping insertion in model container [2022-02-20 18:35:49,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:49" (1/1) ... [2022-02-20 18:35:49,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:35:49,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:35:49,568 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/rekcba_nxt.2.M1-2.c[1937,1950] [2022-02-20 18:35:49,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:49,940 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:35:49,951 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/rekcba_nxt.2.M1-2.c[1937,1950] [2022-02-20 18:35:50,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:50,152 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:35:50,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50 WrapperNode [2022-02-20 18:35:50,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:50,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:50,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:35:50,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:35:50,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,365 INFO L137 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3840 [2022-02-20 18:35:50,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:50,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:35:50,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:35:50,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:35:50,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:35:50,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:35:50,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:35:50,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:35:50,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (1/1) ... [2022-02-20 18:35:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:35:50,605 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) [2022-02-20 18:35:50,619 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 [2022-02-20 18:35:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:35:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:35:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:35:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:35:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:35:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:35:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:35:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:35:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:35:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:35:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:35:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:35:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:35:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-02-20 18:35:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-02-20 18:35:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:35:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:35:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:35:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:35:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:35:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:35:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:35:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:35:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:35:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:35:50,657 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:35:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:50,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:51,026 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:35:51,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:35:57,947 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:35:57,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:35:57,965 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:35:57,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:35:57 BoogieIcfgContainer [2022-02-20 18:35:57,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:35:57,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:35:57,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:35:57,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:35:57,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:35:49" (1/3) ... [2022-02-20 18:35:57,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cab3c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:35:57, skipping insertion in model container [2022-02-20 18:35:57,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:50" (2/3) ... [2022-02-20 18:35:57,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cab3c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:35:57, skipping insertion in model container [2022-02-20 18:35:57,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:35:57" (3/3) ... [2022-02-20 18:35:57,977 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2022-02-20 18:35:57,981 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:35:57,982 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:35:58,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:35:58,030 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 [2022-02-20 18:35:58,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:35:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 1203 states, 766 states have (on average 1.283289817232376) internal successors, (983), 798 states have internal predecessors, (983), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2022-02-20 18:35:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2022-02-20 18:35:58,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:35:58,162 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 18:35:58,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:35:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:35:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -705707352, now seen corresponding path program 1 times [2022-02-20 18:35:58,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:35:58,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779241926] [2022-02-20 18:35:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:35:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms