./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.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.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-?-791161d [2022-07-22 18:09:37,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:09:37,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:09:37,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:09:37,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:09:38,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:09:38,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:09:38,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:09:38,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:09:38,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:09:38,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:09:38,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:09:38,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:09:38,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:09:38,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:09:38,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:09:38,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:09:38,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:09:38,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:09:38,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:09:38,033 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:09:38,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:09:38,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:09:38,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:09:38,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:09:38,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:09:38,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:09:38,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:09:38,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:09:38,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:09:38,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:09:38,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:09:38,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:09:38,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:09:38,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:09:38,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:09:38,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:09:38,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:09:38,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:09:38,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:09:38,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:09:38,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:09:38,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:09:38,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:09:38,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:09:38,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:09:38,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:09:38,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:09:38,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:09:38,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:09:38,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:09:38,081 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:09:38,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:09:38,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:09:38,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:09:38,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:09:38,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:09:38,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:09:38,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:09:38,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:09:38,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:09:38,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:09:38,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:09:38,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:09:38,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:09:38,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:09:38,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:09:38,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:09:38,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:09:38,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:09:38,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:09:38,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:09:38,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:09:38,086 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:09:38,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:09:38,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:09:38,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2022-07-22 18:09:38,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:09:38,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:09:38,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:09:38,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:09:38,307 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:09:38,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-22 18:09:38,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955411ce6/4bd62e4daa7e46df80bf4db4f31e7da0/FLAG032d58237 [2022-07-22 18:09:38,926 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:09:38,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-22 18:09:38,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955411ce6/4bd62e4daa7e46df80bf4db4f31e7da0/FLAG032d58237 [2022-07-22 18:09:39,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955411ce6/4bd62e4daa7e46df80bf4db4f31e7da0 [2022-07-22 18:09:39,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:09:39,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:09:39,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:09:39,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:09:39,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:09:39,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:09:39" (1/1) ... [2022-07-22 18:09:39,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68af3448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:39, skipping insertion in model container [2022-07-22 18:09:39,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:09:39" (1/1) ... [2022-07-22 18:09:39,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:09:39,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:09:39,348 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] [2022-07-22 18:09:40,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:09:40,082 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:09:40,099 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] [2022-07-22 18:09:40,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:09:40,764 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:09:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40 WrapperNode [2022-07-22 18:09:40,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:09:40,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:09:40,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:09:40,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:09:40,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:41,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:41,929 INFO L137 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-07-22 18:09:41,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:09:41,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:09:41,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:09:41,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:09:41,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:41,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:42,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:42,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:42,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:42,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:42,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:43,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:09:43,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:09:43,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:09:43,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:09:43,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (1/1) ... [2022-07-22 18:09:43,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:09:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:09:43,124 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 18:09:43,175 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 18:09:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:09:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-22 18:09:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-22 18:09:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:09:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-22 18:09:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 18:09:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-22 18:09:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-22 18:09:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-22 18:09:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-22 18:09:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-22 18:09:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-22 18:09:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 18:09:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-22 18:09:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-22 18:09:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-22 18:09:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-22 18:09:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:09:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-22 18:09:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:09:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:09:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-22 18:09:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 18:09:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 18:09:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:09:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:09:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:09:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-22 18:09:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-22 18:09:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-22 18:09:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-22 18:09:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:09:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-22 18:09:44,686 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:09:44,687 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:10:38,256 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:10:38,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:10:38,308 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:10:38,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:10:38 BoogieIcfgContainer [2022-07-22 18:10:38,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:10:38,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:10:38,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:10:38,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:10:38,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:09:39" (1/3) ... [2022-07-22 18:10:38,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:10:38, skipping insertion in model container [2022-07-22 18:10:38,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:09:40" (2/3) ... [2022-07-22 18:10:38,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:10:38, skipping insertion in model container [2022-07-22 18:10:38,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:10:38" (3/3) ... [2022-07-22 18:10:38,325 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-07-22 18:10:38,336 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:10:38,337 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:10:38,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:10:38,520 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@6bf48e3d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fda3bb0 [2022-07-22 18:10:38,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:10:38,546 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) [2022-07-22 18:10:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-07-22 18:10:39,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:10:39,062 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 18:10:39,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:10:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:10:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2022-07-22 18:10:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:10:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98659922] [2022-07-22 18:10:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:10:39,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms