./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.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 c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:57:57,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:57:57,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:57:57,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:57:57,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:57:57,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:57:57,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:57:57,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:57:57,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:57:57,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:57:57,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:57:57,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:57:57,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:57:57,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:57:57,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:57:57,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:57:57,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:57:57,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:57:57,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:57:57,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:57:57,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:57:57,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:57:57,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:57:57,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:57:57,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:57:57,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:57:57,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:57:57,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:57:57,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:57:57,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:57:57,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:57:57,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:57:57,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:57:57,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:57:57,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:57:57,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:57:57,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:57:57,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:57:57,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:57:57,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:57:57,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:57:57,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:57:57,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:57:57,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:57:57,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:57:57,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:57:57,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:57:57,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:57:57,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:57:57,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:57:57,938 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:57:57,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:57:57,939 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:57:57,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:57:57,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:57:57,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:57:57,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:57:57,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:57:57,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:57:57,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:57:57,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:57:57,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:57,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:57:57,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:57:57,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:57:57,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:57:57,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:57:57,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:57:57,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:57:57,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:57:57,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:57:57,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff [2021-12-22 11:57:58,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:57:58,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:57:58,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:57:58,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:57:58,149 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:57:58,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2021-12-22 11:57:58,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e57e939a/02199ba607364dda8ea6ae0e0bca0e71/FLAG0594e0834 [2021-12-22 11:57:58,627 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:57:58,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2021-12-22 11:57:58,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e57e939a/02199ba607364dda8ea6ae0e0bca0e71/FLAG0594e0834 [2021-12-22 11:57:58,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e57e939a/02199ba607364dda8ea6ae0e0bca0e71 [2021-12-22 11:57:58,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:57:58,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:57:58,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:58,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:57:58,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:57:58,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:58" (1/1) ... [2021-12-22 11:57:58,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8aa022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:58, skipping insertion in model container [2021-12-22 11:57:58,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:57:58" (1/1) ... [2021-12-22 11:57:58,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:57:59,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:57:59,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2021-12-22 11:57:59,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:59,391 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:57:59,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2021-12-22 11:57:59,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:57:59,601 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:57:59,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59 WrapperNode [2021-12-22 11:57:59,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:57:59,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:59,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:57:59,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:57:59,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,756 INFO L137 Inliner]: procedures = 56, calls = 2072, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4032 [2021-12-22 11:57:59,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:57:59,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:57:59,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:57:59,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:57:59,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:57:59,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:57:59,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:57:59,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:57:59,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (1/1) ... [2021-12-22 11:57:59,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:57:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:57:59,981 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) [2021-12-22 11:57:59,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 11:58:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:58:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:58:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:58:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:58:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:58:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:58:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:58:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:58:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:58:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:58:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:58:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:58:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:58:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:58:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:58:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:58:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:58:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:58:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:58:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:58:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:58:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:58:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-22 11:58:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-22 11:58:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:58:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:58:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:58:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:58:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:58:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:58:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:58:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:58:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:58:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:58:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:58:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:58:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:58:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:58:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:58:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:58:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:58:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:58:00,379 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:58:00,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:58:06,682 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:58:06,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:58:06,695 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:58:06,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:06 BoogieIcfgContainer [2021-12-22 11:58:06,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:58:06,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:58:06,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:58:06,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:58:06,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:57:58" (1/3) ... [2021-12-22 11:58:06,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6248c8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:06, skipping insertion in model container [2021-12-22 11:58:06,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:57:59" (2/3) ... [2021-12-22 11:58:06,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6248c8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:06, skipping insertion in model container [2021-12-22 11:58:06,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:06" (3/3) ... [2021-12-22 11:58:06,705 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2021-12-22 11:58:06,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:58:06,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:58:06,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:58:06,776 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 [2021-12-22 11:58:06,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:58:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 1661 states, 1002 states have (on average 1.2255489021956087) internal successors, (1228), 1007 states have internal predecessors, (1228), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2021-12-22 11:58:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2021-12-22 11:58:06,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:06,936 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:06,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:58:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1891072513, now seen corresponding path program 1 times [2021-12-22 11:58:06,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:06,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478246533] [2021-12-22 11:58:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:06,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms