./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 791161d1 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-?-791161d [2022-07-22 18:10:11,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:10:11,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:10:11,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:10:11,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:10:11,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:10:11,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:10:11,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:10:11,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:10:11,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:10:11,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:10:11,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:10:11,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:10:11,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:10:11,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:10:11,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:10:11,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:10:11,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:10:11,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:10:11,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:10:11,813 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:10:11,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:10:11,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:10:11,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:10:11,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:10:11,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:10:11,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:10:11,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:10:11,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:10:11,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:10:11,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:10:11,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:10:11,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:10:11,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:10:11,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:10:11,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:10:11,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:10:11,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:10:11,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:10:11,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:10:11,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:10:11,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:10:11,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:10:11,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:10:11,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:10:11,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:10:11,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:10:11,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:10:11,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:10:11,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:10:11,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:10:11,870 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:10:11,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:10:11,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:10:11,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:10:11,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:10:11,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:10:11,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:10:11,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:10:11,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:10:11,873 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:10:11,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:10:11,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:10:11,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:10:11,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:10:11,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:10:11,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:10:11,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:10:11,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:10:11,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:10:11,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:10:11,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:10:11,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:10:11,875 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:10:11,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:10:11,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:10:11,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a [2022-07-22 18:10:12,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:10:12,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:10:12,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:10:12,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:10:12,120 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:10:12,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-07-22 18:10:12,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984feab77/93bd6ea44683444f8635c92282a98f4c/FLAGdddda26c7 [2022-07-22 18:10:12,901 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:10:12,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-07-22 18:10:12,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984feab77/93bd6ea44683444f8635c92282a98f4c/FLAGdddda26c7 [2022-07-22 18:10:13,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984feab77/93bd6ea44683444f8635c92282a98f4c [2022-07-22 18:10:13,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:10:13,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:10:13,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:10:13,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:10:13,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:10:13,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:10:13" (1/1) ... [2022-07-22 18:10:13,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344a231f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:13, skipping insertion in model container [2022-07-22 18:10:13,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:10:13" (1/1) ... [2022-07-22 18:10:13,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:10:13,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:10:13,550 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] [2022-07-22 18:10:14,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:10:14,389 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:10:14,400 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] [2022-07-22 18:10:15,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:10:15,250 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:10:15,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15 WrapperNode [2022-07-22 18:10:15,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:10:15,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:10:15,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:10:15,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:10:15,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:15,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:16,714 INFO L137 Inliner]: procedures = 58, calls = 18195, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39852 [2022-07-22 18:10:16,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:10:16,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:10:16,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:10:16,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:10:16,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:16,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:17,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:18,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:10:18,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:10:18,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:10:18,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:10:18,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (1/1) ... [2022-07-22 18:10:18,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:10:18,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:10:18,164 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) [2022-07-22 18:10:18,179 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 [2022-07-22 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-22 18:10:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-22 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:10:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-22 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:10:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:10:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:10:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:10:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 18:10:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:10:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:10:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 18:10:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-22 18:10:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-22 18:10:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-22 18:10:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-22 18:10:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 18:10:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 18:10:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:10:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:10:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:10:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-22 18:10:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-22 18:10:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-22 18:10:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-22 18:10:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:10:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:10:19,833 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:10:19,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:10:45,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:10:45,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:10:45,718 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:10:45,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:10:45 BoogieIcfgContainer [2022-07-22 18:10:45,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:10:45,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:10:45,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:10:45,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:10:45,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:10:13" (1/3) ... [2022-07-22 18:10:45,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005d132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:10:45, skipping insertion in model container [2022-07-22 18:10:45,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:10:15" (2/3) ... [2022-07-22 18:10:45,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005d132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:10:45, skipping insertion in model container [2022-07-22 18:10:45,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:10:45" (3/3) ... [2022-07-22 18:10:45,740 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-1.c [2022-07-22 18:10:45,752 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:10:45,752 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:10:45,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:10:45,981 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63ff543b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ca78b4 [2022-07-22 18:10:45,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:10:46,015 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) [2022-07-22 18:10:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-07-22 18:10:46,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:10:46,429 INFO L195 NwaCegarLoop]: 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, 1, 1, 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1, 1, 1] [2022-07-22 18:10:46,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:10:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:10:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1377856296, now seen corresponding path program 1 times [2022-07-22 18:10:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:10:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433719113] [2022-07-22 18:10:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:10:46,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms