./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/rekcba_nxt.2.M4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:19:19,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:19:19,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:19:19,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:19:19,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:19:19,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:19:19,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:19:19,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:19:19,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:19:19,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:19:19,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:19:19,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:19:19,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:19:19,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:19:19,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:19:19,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:19:19,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:19:19,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:19:19,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:19:19,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:19:19,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:19:19,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:19:19,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:19:19,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:19:19,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:19:19,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:19:19,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:19:19,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:19:19,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:19:19,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:19:19,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:19:19,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:19:19,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:19:19,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:19:19,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:19:19,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:19:19,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:19:19,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:19:19,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:19:19,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:19:19,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:19:19,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:19:19,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:19:19,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:19:19,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:19:19,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:19:19,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:19:19,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:19:19,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:19:19,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:19:19,378 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:19:19,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:19:19,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:19:19,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:19:19,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:19:19,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:19:19,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:19:19,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:19:19,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:19,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:19:19,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:19:19,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:19:19,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:19:19,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:19:19,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:19:19,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:19:19,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a [2021-12-16 01:19:19,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:19:19,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:19:19,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:19:19,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:19:19,599 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:19:19,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2021-12-16 01:19:19,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7287b81ac/180b68194a69477887e82a7d6dc27536/FLAGe5cda603b [2021-12-16 01:19:20,244 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:19:20,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2021-12-16 01:19:20,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7287b81ac/180b68194a69477887e82a7d6dc27536/FLAGe5cda603b [2021-12-16 01:19:20,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7287b81ac/180b68194a69477887e82a7d6dc27536 [2021-12-16 01:19:20,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:19:20,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:19:20,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:20,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:19:20,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:19:20,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:20" (1/1) ... [2021-12-16 01:19:20,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4617fae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:20, skipping insertion in model container [2021-12-16 01:19:20,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:20" (1/1) ... [2021-12-16 01:19:20,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:19:20,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:19:20,957 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.M4-1.c[2195,2208] [2021-12-16 01:19:21,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:21,613 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:19:21,628 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.M4-1.c[2195,2208] [2021-12-16 01:19:22,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:22,240 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:19:22,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22 WrapperNode [2021-12-16 01:19:22,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:22,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:22,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:19:22,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:19:22,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:22,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:23,422 INFO L137 Inliner]: procedures = 58, calls = 18195, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39852 [2021-12-16 01:19:23,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:23,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:19:23,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:19:23,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:19:23,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:23,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:23,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:23,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:24,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:24,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:24,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:24,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:19:24,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:19:24,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:19:24,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:19:24,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (1/1) ... [2021-12-16 01:19:24,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:19:24,613 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) [2021-12-16 01:19:24,731 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 [2021-12-16 01:19:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:19:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-16 01:19:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-16 01:19:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 01:19:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-16 01:19:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-16 01:19:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-16 01:19:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-16 01:19:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 01:19:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-16 01:19:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-16 01:19:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 01:19:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:19:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:19:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-16 01:19:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-16 01:19:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:19:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:19:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:19:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:19:24,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:19:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-16 01:19:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-16 01:19:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-16 01:19:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-16 01:19:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:26,124 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:19:26,126 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:19:48,478 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:19:48,513 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:19:48,513 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 01:19:48,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:48 BoogieIcfgContainer [2021-12-16 01:19:48,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:19:48,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:19:48,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:19:48,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:19:48,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:19:20" (1/3) ... [2021-12-16 01:19:48,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1276f3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:48, skipping insertion in model container [2021-12-16 01:19:48,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:22" (2/3) ... [2021-12-16 01:19:48,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1276f3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:48, skipping insertion in model container [2021-12-16 01:19:48,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:48" (3/3) ... [2021-12-16 01:19:48,534 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-1.c [2021-12-16 01:19:48,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:19:48,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:19:48,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:19:48,616 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 [2021-12-16 01:19:48,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:19:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 12240 states, 7996 states have (on average 1.3156578289144572) internal successors, (10520), 8109 states have internal predecessors, (10520), 4226 states have call successors, (4226), 16 states have call predecessors, (4226), 16 states have return successors, (4226), 4224 states have call predecessors, (4226), 4226 states have call successors, (4226) [2021-12-16 01:19:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2021-12-16 01:19:49,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:19:49,186 INFO L514 BasicCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2021-12-16 01:19:49,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:19:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:19:49,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1377856296, now seen corresponding path program 1 times [2021-12-16 01:19:49,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:19:49,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278109046] [2021-12-16 01:19:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:19:49,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms