./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.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.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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:35:30,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:35:30,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:35:30,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:35:30,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:35:30,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:35:30,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:35:30,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:35:30,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:35:30,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:35:30,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:35:30,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:35:30,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:35:30,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:35:30,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:35:30,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:35:30,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:35:30,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:35:30,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:35:30,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:35:30,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:35:30,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:35:30,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:35:30,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:35:30,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:35:30,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:35:30,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:35:30,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:35:30,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:35:30,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:35:30,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:35:30,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:35:30,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:35:30,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:35:30,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:35:30,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:35:30,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:35:30,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:35:30,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:35:30,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:35:30,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:35:30,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:35:30,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:35:30,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:35:30,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:35:30,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:35:30,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:35:30,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:35:30,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:35:30,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:35:30,713 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:35:30,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:35:30,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:35:30,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:35:30,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:35:30,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:35:30,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:35:30,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:35:30,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:35:30,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:30,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:35:30,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:35:30,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:35:30,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2022-02-20 18:35:30,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:35:30,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:35:30,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:35:30,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:35:30,930 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:35:30,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-02-20 18:35:30,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fe413fb/baf74ff323984ce0b4cde8256f0b28af/FLAG3d7bd8a48 [2022-02-20 18:35:31,453 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:35:31,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-02-20 18:35:31,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fe413fb/baf74ff323984ce0b4cde8256f0b28af/FLAG3d7bd8a48 [2022-02-20 18:35:31,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fe413fb/baf74ff323984ce0b4cde8256f0b28af [2022-02-20 18:35:31,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:35:31,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:35:31,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:31,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:35:31,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:35:31,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:31" (1/1) ... [2022-02-20 18:35:31,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3c9887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:31, skipping insertion in model container [2022-02-20 18:35:31,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:31" (1/1) ... [2022-02-20 18:35:31,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:35:31,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:35:31,962 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.1.M4-1.c[1673,1686] [2022-02-20 18:35:32,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:32,728 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:35:32,744 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.1.M4-1.c[1673,1686] [2022-02-20 18:35:33,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:33,347 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:35:33,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33 WrapperNode [2022-02-20 18:35:33,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:33,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:33,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:35:33,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:35:33,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:33,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:34,422 INFO L137 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-02-20 18:35:34,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:34,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:35:34,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:35:34,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:35:34,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:34,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:34,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:34,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:35,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:35,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:35,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:35,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:35:35,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:35:35,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:35:35,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:35:35,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (1/1) ... [2022-02-20 18:35:35,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:35:35,928 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 18:35:35,988 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 18:35:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:35:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:35:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:35:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:35:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:35:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:35:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:35:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:35:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:35:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:35:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:35:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:35:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:35:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:35:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:35:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:35:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:35:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:35:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:35:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:35:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:35:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:35:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:35:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:35:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:37,527 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:35:37,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:36:04,488 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:36:04,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:36:04,528 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:36:04,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:36:04 BoogieIcfgContainer [2022-02-20 18:36:04,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:36:04,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:36:04,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:36:04,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:36:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:35:31" (1/3) ... [2022-02-20 18:36:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a946f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:36:04, skipping insertion in model container [2022-02-20 18:36:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:33" (2/3) ... [2022-02-20 18:36:04,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a946f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:36:04, skipping insertion in model container [2022-02-20 18:36:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:36:04" (3/3) ... [2022-02-20 18:36:04,543 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-02-20 18:36:04,546 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:36:04,546 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:36:04,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:36:04,616 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 [2022-02-20 18:36:04,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:36:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-02-20 18:36:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-02-20 18:36:05,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:36:05,143 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] [2022-02-20 18:36:05,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:36:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:36:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2022-02-20 18:36:05,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:36:05,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916358893] [2022-02-20 18:36:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:36:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms