./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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.M1-1.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 bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:34:53,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:34:53,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:34:53,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:34:53,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:34:53,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:34:53,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:34:53,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:34:53,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:34:53,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:34:53,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:34:53,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:34:53,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:34:53,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:34:53,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:34:53,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:34:53,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:34:53,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:34:53,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:34:53,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:34:53,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:34:53,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:34:53,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:34:53,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:34:53,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:34:53,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:34:53,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:34:53,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:34:53,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:34:53,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:34:53,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:34:53,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:34:53,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:34:53,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:34:53,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:34:53,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:34:53,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:34:53,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:34:53,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:34:53,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:34:53,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:34:53,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:34:53,883 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:34:53,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:34:53,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:34:53,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:34:53,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:34:53,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:34:53,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:34:53,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:34:53,887 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:34:53,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:34:53,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:34:53,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:34:53,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:34:53,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:34:53,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:34:53,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:34:53,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:34:53,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:34:53,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:34:53,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:34:53,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:34:53,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:34:53,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:34:53,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:34:53,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:34:53,891 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:34:53,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:34:53,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:34:53,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:34:53,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e [2021-12-21 13:34:54,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:34:54,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:34:54,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:34:54,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:34:54,135 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:34:54,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-21 13:34:54,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ab08750/3235ddb5745844bd8599d489f1efb94a/FLAG1e1bc611b [2021-12-21 13:34:54,616 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:34:54,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2021-12-21 13:34:54,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ab08750/3235ddb5745844bd8599d489f1efb94a/FLAG1e1bc611b [2021-12-21 13:34:54,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ab08750/3235ddb5745844bd8599d489f1efb94a [2021-12-21 13:34:54,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:34:54,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:34:54,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:34:54,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:34:54,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:34:54,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:34:54" (1/1) ... [2021-12-21 13:34:54,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300489dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:54, skipping insertion in model container [2021-12-21 13:34:54,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:34:54" (1/1) ... [2021-12-21 13:34:54,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:34:54,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:34:55,120 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.M1-1.c[2020,2033] [2021-12-21 13:34:55,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:34:55,332 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:34:55,341 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.M1-1.c[2020,2033] [2021-12-21 13:34:55,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:34:55,486 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:34:55,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55 WrapperNode [2021-12-21 13:34:55,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:34:55,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:34:55,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:34:55,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:34:55,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,643 INFO L137 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2021-12-21 13:34:55,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:34:55,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:34:55,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:34:55,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:34:55,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:34:55,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:34:55,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:34:55,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:34:55,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (1/1) ... [2021-12-21 13:34:55,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:34:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:34:55,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:34:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:34:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:34:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-21 13:34:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-21 13:34:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:34:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:34:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 13:34:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-21 13:34:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-21 13:34:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-21 13:34:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-21 13:34:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-21 13:34:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-21 13:34:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-21 13:34:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-21 13:34:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:34:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-21 13:34:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-21 13:34:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-21 13:34:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-21 13:34:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:34:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:34:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:34:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:34:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 13:34:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:34:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:34:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:34:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-21 13:34:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-21 13:34:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-21 13:34:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-21 13:34:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-21 13:34:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-21 13:34:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 13:34:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 13:34:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:34:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:34:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:34:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-21 13:34:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-21 13:34:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-21 13:34:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-21 13:34:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:34:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:34:56,292 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:34:56,294 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:35:02,132 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:35:02,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:35:02,179 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:35:02,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:35:02 BoogieIcfgContainer [2021-12-21 13:35:02,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:35:02,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:35:02,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:35:02,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:35:02,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:34:54" (1/3) ... [2021-12-21 13:35:02,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a42def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:35:02, skipping insertion in model container [2021-12-21 13:35:02,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:55" (2/3) ... [2021-12-21 13:35:02,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a42def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:35:02, skipping insertion in model container [2021-12-21 13:35:02,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:35:02" (3/3) ... [2021-12-21 13:35:02,189 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-1.c [2021-12-21 13:35:02,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:35:02,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:35:02,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:35:02,255 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:35:02,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:35:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 815 states have (on average 1.2748466257668711) internal successors, (1039), 847 states have internal predecessors, (1039), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2021-12-21 13:35:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2021-12-21 13:35:02,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:35:02,346 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:35:02,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:35:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:35:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1711506897, now seen corresponding path program 1 times [2021-12-21 13:35:02,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:35:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400761179] [2021-12-21 13:35:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:35:02,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms