./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:55:51,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:55:51,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:55:51,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:55:51,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:55:51,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:55:51,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:55:51,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:55:51,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:55:51,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:55:51,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:55:51,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:55:51,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:55:51,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:55:51,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:55:51,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:55:51,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:55:51,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:55:51,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:55:51,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:55:51,161 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:55:51,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:55:51,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:55:51,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:55:51,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:55:51,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:55:51,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:55:51,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:55:51,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:55:51,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:55:51,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:55:51,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:55:51,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:55:51,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:55:51,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:55:51,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:55:51,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:55:51,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:55:51,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:55:51,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:55:51,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:55:51,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:55:51,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:55:51,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:55:51,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:55:51,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:55:51,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:55:51,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:55:51,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:55:51,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:55:51,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:55:51,216 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:55:51,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:55:51,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:55:51,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:55:51,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:55:51,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:55:51,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:55:51,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:55:51,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:55:51,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:55:51,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:55:51,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:55:51,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:55:51,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:55:51,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:55:51,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:55:51,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:55:51,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:55:51,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:55:51,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:55:51,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:55:51,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:55:51,222 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:55:51,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:55:51,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:55:51,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a [2022-07-19 17:55:51,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:55:51,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:55:51,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:55:51,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:55:51,480 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:55:51,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-07-19 17:55:51,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0021a57b/8c54c5119219406dac9c6d61346f3d00/FLAG4433c3375 [2022-07-19 17:55:52,241 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:55:52,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2022-07-19 17:55:52,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0021a57b/8c54c5119219406dac9c6d61346f3d00/FLAG4433c3375 [2022-07-19 17:55:52,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0021a57b/8c54c5119219406dac9c6d61346f3d00 [2022-07-19 17:55:52,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:55:52,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:55:52,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:55:52,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:55:52,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:55:52,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:55:52" (1/1) ... [2022-07-19 17:55:52,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd78ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:52, skipping insertion in model container [2022-07-19 17:55:52,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:55:52" (1/1) ... [2022-07-19 17:55:52,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:55:52,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:55:52,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c[2195,2208] [2022-07-19 17:55:53,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:55:53,757 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:55:53,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c[2195,2208] [2022-07-19 17:55:54,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:55:54,664 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:55:54,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54 WrapperNode [2022-07-19 17:55:54,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:55:54,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:55:54,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:55:54,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:55:54,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:54,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:56,534 INFO L137 Inliner]: procedures = 58, calls = 18195, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39852 [2022-07-19 17:55:56,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:55:56,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:55:56,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:55:56,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:55:56,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:56,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:56,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:56,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:57,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:57,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:57,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:57,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:55:57,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:55:57,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:55:57,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:55:57,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (1/1) ... [2022-07-19 17:55:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:55:57,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:55:57,945 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) [2022-07-19 17:55:57,972 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 [2022-07-19 17:55:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:55:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-19 17:55:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-19 17:55:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-19 17:55:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-19 17:55:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 17:55:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-19 17:55:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-19 17:55:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-19 17:55:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-19 17:55:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-19 17:55:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-19 17:55:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 17:55:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-19 17:55:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-19 17:55:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-19 17:55:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-19 17:55:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-19 17:55:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-19 17:55:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-19 17:55:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-19 17:55:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 17:55:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-19 17:55:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-19 17:55:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 17:55:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-19 17:55:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-19 17:55:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-19 17:55:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-19 17:55:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 17:55:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 17:55:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:55:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:55:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:55:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-19 17:55:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-19 17:55:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-19 17:55:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-19 17:55:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-19 17:55:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-19 17:55:59,865 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:55:59,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:56:30,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:56:30,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:56:30,461 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:56:30,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:56:30 BoogieIcfgContainer [2022-07-19 17:56:30,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:56:30,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:56:30,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:56:30,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:56:30,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:55:52" (1/3) ... [2022-07-19 17:56:30,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d584e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:56:30, skipping insertion in model container [2022-07-19 17:56:30,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:55:54" (2/3) ... [2022-07-19 17:56:30,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d584e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:56:30, skipping insertion in model container [2022-07-19 17:56:30,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:56:30" (3/3) ... [2022-07-19 17:56:30,485 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-1.c [2022-07-19 17:56:30,500 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:56:30,501 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:56:30,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:56:30,743 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@614fb6ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e2b476e [2022-07-19 17:56:30,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:56:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 12240 states, 7996 states have (on average 1.3156578289144572) internal successors, (10520), 8109 states have internal predecessors, (10520), 4226 states have call successors, (4226), 16 states have call predecessors, (4226), 16 states have return successors, (4226), 4224 states have call predecessors, (4226), 4226 states have call successors, (4226) [2022-07-19 17:56:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-07-19 17:56:31,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:56:31,240 INFO L195 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1] [2022-07-19 17:56:31,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:56:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:56:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1377856296, now seen corresponding path program 1 times [2022-07-19 17:56:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:56:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718758535] [2022-07-19 17:56:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:56:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms