./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.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 e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:54:04,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:54:04,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:54:04,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:54:04,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:54:04,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:54:04,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:54:04,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:54:04,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:54:04,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:54:04,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:54:04,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:54:04,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:54:04,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:54:04,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:54:04,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:54:04,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:54:04,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:54:04,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:54:04,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:54:04,144 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:54:04,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:54:04,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:54:04,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:54:04,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:54:04,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:54:04,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:54:04,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:54:04,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:54:04,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:54:04,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:54:04,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:54:04,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:54:04,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:54:04,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:54:04,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:54:04,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:54:04,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:54:04,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:54:04,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:54:04,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:54:04,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:54:04,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:54:04,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:54:04,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:54:04,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:54:04,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:54:04,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:54:04,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:54:04,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:54:04,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:54:04,181 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:54:04,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:54:04,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:54:04,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:54:04,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:54:04,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:54:04,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:54:04,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:54:04,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:54:04,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f [2022-07-12 06:54:04,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:54:04,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:54:04,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:54:04,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:54:04,388 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:54:04,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-07-12 06:54:04,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1bb201/5a39d625fb254276b71ec25e44869f37/FLAG38031bdac [2022-07-12 06:54:04,907 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:54:04,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-07-12 06:54:04,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1bb201/5a39d625fb254276b71ec25e44869f37/FLAG38031bdac [2022-07-12 06:54:04,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1bb201/5a39d625fb254276b71ec25e44869f37 [2022-07-12 06:54:04,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:54:04,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:54:04,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:54:04,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:54:04,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:54:04,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:54:04" (1/1) ... [2022-07-12 06:54:04,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6858a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:04, skipping insertion in model container [2022-07-12 06:54:04,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:54:04" (1/1) ... [2022-07-12 06:54:04,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:54:05,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:54:05,189 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.M1-1.c[1765,1778] [2022-07-12 06:54:05,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:54:05,489 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:54:05,505 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.M1-1.c[1765,1778] [2022-07-12 06:54:05,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:54:05,693 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:54:05,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05 WrapperNode [2022-07-12 06:54:05,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:54:05,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:54:05,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:54:05,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:54:05,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:05,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:05,868 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-07-12 06:54:05,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:54:05,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:54:05,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:54:05,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:54:05,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:05,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:05,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:05,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:06,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:06,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:06,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:06,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:54:06,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:54:06,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:54:06,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:54:06,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (1/1) ... [2022-07-12 06:54:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:54:06,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:54:06,092 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) [2022-07-12 06:54:06,098 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 [2022-07-12 06:54:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:54:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-12 06:54:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-12 06:54:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:54:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:54:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 06:54:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-12 06:54:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-12 06:54:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-12 06:54:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-12 06:54:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-12 06:54:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-12 06:54:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-12 06:54:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-12 06:54:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 06:54:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-12 06:54:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-12 06:54:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-12 06:54:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-12 06:54:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:54:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:54:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:54:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:54:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 06:54:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:54:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:54:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 06:54:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-12 06:54:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-12 06:54:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-12 06:54:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-12 06:54:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-12 06:54:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-12 06:54:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 06:54:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 06:54:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:54:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:54:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:54:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-12 06:54:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-12 06:54:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-12 06:54:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-12 06:54:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:54:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:54:06,532 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:54:06,533 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:54:12,926 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:54:12,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:54:12,947 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:54:12,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:54:12 BoogieIcfgContainer [2022-07-12 06:54:12,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:54:12,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:54:12,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:54:12,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:54:12,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:54:04" (1/3) ... [2022-07-12 06:54:12,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a7d563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:54:12, skipping insertion in model container [2022-07-12 06:54:12,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:54:05" (2/3) ... [2022-07-12 06:54:12,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a7d563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:54:12, skipping insertion in model container [2022-07-12 06:54:12,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:54:12" (3/3) ... [2022-07-12 06:54:12,970 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-1.c [2022-07-12 06:54:12,982 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:54:12,982 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:54:13,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:54:13,081 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@cb54883, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31e6e708 [2022-07-12 06:54:13,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:54:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1146 states have (on average 1.2033158813263525) internal successors, (1379), 1151 states have internal predecessors, (1379), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2022-07-12 06:54:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2022-07-12 06:54:13,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:54:13,141 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:54:13,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:54:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:54:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -112777684, now seen corresponding path program 1 times [2022-07-12 06:54:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:54:13,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038351046] [2022-07-12 06:54:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:54:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms