./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_nxt.1.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 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:17:33,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:17:33,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:17:33,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:17:33,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:17:33,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:17:33,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:17:33,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:17:33,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:17:33,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:17:33,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:17:33,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:17:33,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:17:33,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:17:33,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:17:33,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:17:33,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:17:33,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:17:33,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:17:33,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:17:33,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:17:33,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:17:33,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:17:33,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:17:33,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:17:33,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:17:33,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:17:33,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:17:33,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:17:33,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:17:33,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:17:33,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:17:33,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:17:33,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:17:33,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:17:33,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:17:33,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:17:33,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:17:33,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:17:33,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:17:33,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:17:33,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:17:33,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:17:33,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:17:33,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:17:33,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:17:33,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:17:33,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:17:33,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:17:33,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:17:33,340 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:17:33,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:17:33,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:17:33,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:17:33,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:17:33,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:17:33,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:17:33,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:17:33,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:17:33,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:17:33,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:33,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:17:33,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:17:33,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:17:33,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:17:33,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:17:33,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:17:33,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:17:33,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:17:33,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e [2021-12-28 01:17:33,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:17:33,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:17:33,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:17:33,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:17:33,615 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:17:33,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-28 01:17:33,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a981be8/11e3954069b14882ac5dc47bd5160261/FLAGf0addb594 [2021-12-28 01:17:34,308 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:17:34,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-28 01:17:34,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a981be8/11e3954069b14882ac5dc47bd5160261/FLAGf0addb594 [2021-12-28 01:17:34,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a981be8/11e3954069b14882ac5dc47bd5160261 [2021-12-28 01:17:34,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:17:34,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:17:34,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:34,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:17:34,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:17:34,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:34" (1/1) ... [2021-12-28 01:17:34,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13de5100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:34, skipping insertion in model container [2021-12-28 01:17:34,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:34" (1/1) ... [2021-12-28 01:17:34,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:17:34,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:17:34,779 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_nxt.1.M4-1.c[1510,1523] [2021-12-28 01:17:35,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:35,051 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:17:35,079 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_nxt.1.M4-1.c[1510,1523] [2021-12-28 01:17:35,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:35,270 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:17:35,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35 WrapperNode [2021-12-28 01:17:35,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:35,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:35,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:17:35,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:17:35,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,509 INFO L137 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2021-12-28 01:17:35,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:35,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:17:35,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:17:35,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:17:35,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:17:35,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:17:35,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:17:35,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:17:35,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (1/1) ... [2021-12-28 01:17:35,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:35,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:17:35,746 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) [2021-12-28 01:17:35,765 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 [2021-12-28 01:17:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:17:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-28 01:17:35,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-28 01:17:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:17:35,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:17:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 01:17:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-28 01:17:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-28 01:17:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-28 01:17:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-28 01:17:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-28 01:17:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-28 01:17:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 01:17:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-28 01:17:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-28 01:17:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-28 01:17:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-28 01:17:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:17:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:17:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:17:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:17:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 01:17:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-28 01:17:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-28 01:17:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:17:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:17:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 01:17:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-28 01:17:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-28 01:17:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 01:17:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 01:17:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:17:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:17:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:17:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-28 01:17:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-28 01:17:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-28 01:17:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-28 01:17:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:17:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:17:36,198 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:17:36,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:17:42,470 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:17:42,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:17:42,482 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 01:17:42,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:42 BoogieIcfgContainer [2021-12-28 01:17:42,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:17:42,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:17:42,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:17:42,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:17:42,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:17:34" (1/3) ... [2021-12-28 01:17:42,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b94bc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:42, skipping insertion in model container [2021-12-28 01:17:42,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:35" (2/3) ... [2021-12-28 01:17:42,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b94bc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:42, skipping insertion in model container [2021-12-28 01:17:42,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:42" (3/3) ... [2021-12-28 01:17:42,490 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2021-12-28 01:17:42,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:17:42,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:17:42,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:17:42,559 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 [2021-12-28 01:17:42,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:17:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 977 states have internal predecessors, (1194), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-28 01:17:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8483 [2021-12-28 01:17:43,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:17:43,042 INFO L514 BasicCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:17:43,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:17:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:17:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash -767459317, now seen corresponding path program 1 times [2021-12-28 01:17:43,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:17:43,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004994680] [2021-12-28 01:17:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:17:43,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms