./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.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.M4-2.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 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:58:13,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:58:13,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:58:13,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:58:13,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:58:13,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:58:13,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:58:13,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:58:13,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:58:13,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:58:13,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:58:13,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:58:13,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:58:13,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:58:13,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:58:13,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:58:13,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:58:13,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:58:13,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:58:13,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:58:13,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:58:13,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:58:13,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:58:13,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:58:13,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:58:13,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:58:13,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:58:13,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:58:13,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:58:13,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:58:13,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:58:13,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:58:13,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:58:13,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:58:13,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:58:13,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:58:13,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:58:13,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:58:13,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:58:13,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:58:13,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:58:13,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:58:13,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:58:13,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:58:13,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:58:13,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:58:13,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:58:13,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:58:13,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:58:13,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:58:13,512 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:58:13,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:58:13,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:58:13,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:58:13,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:58:13,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:58:13,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:58:13,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:58:13,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:58:13,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:58:13,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:58:13,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:58:13,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:58:13,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:58:13,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:58:13,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:58:13,517 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:58:13,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:58:13,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:58:13,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:58:13,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2021-12-22 11:58:13,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:58:13,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:58:13,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:58:13,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:58:13,785 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:58:13,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2021-12-22 11:58:13,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22266b829/09546369921a42559f7b65e881f6bbd5/FLAG2e8584c5a [2021-12-22 11:58:14,364 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:58:14,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2021-12-22 11:58:14,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22266b829/09546369921a42559f7b65e881f6bbd5/FLAG2e8584c5a [2021-12-22 11:58:14,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22266b829/09546369921a42559f7b65e881f6bbd5 [2021-12-22 11:58:14,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:58:14,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:58:14,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:58:14,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:58:14,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:58:14,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:58:14" (1/1) ... [2021-12-22 11:58:14,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e349cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:14, skipping insertion in model container [2021-12-22 11:58:14,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:58:14" (1/1) ... [2021-12-22 11:58:14,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:58:14,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:58:15,053 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.M4-2.c[1765,1778] [2021-12-22 11:58:15,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:58:15,329 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:58:15,354 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.M4-2.c[1765,1778] [2021-12-22 11:58:15,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:58:15,578 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:58:15,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15 WrapperNode [2021-12-22 11:58:15,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:58:15,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:58:15,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:58:15,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:58:15,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,835 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2021-12-22 11:58:15,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:58:15,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:58:15,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:58:15,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:58:15,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:15,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:16,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:58:16,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:58:16,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:58:16,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:58:16,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (1/1) ... [2021-12-22 11:58:16,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:58:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:58:16,076 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 11:58:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:58:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:58:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:58:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:58:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:58:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:58:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:58:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:58:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:58:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:58:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-22 11:58:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-22 11:58:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:58:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:58:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:58:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:58:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:58:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:58:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:58:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:58:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:58:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:58:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:58:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:58:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-22 11:58:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-22 11:58:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:58:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:58:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:58:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:58:16,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:58:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:58:16,116 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:58:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-22 11:58:16,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-22 11:58:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:58:16,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:58:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:58:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:58:16,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:58:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:58:16,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:58:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:58:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:58:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:58:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:58:16,099 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 11:58:16,593 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:58:16,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:58:22,975 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:58:22,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:58:22,991 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:58:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:22 BoogieIcfgContainer [2021-12-22 11:58:22,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:58:22,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:58:22,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:58:22,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:58:22,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:58:14" (1/3) ... [2021-12-22 11:58:22,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5681d6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:22, skipping insertion in model container [2021-12-22 11:58:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:15" (2/3) ... [2021-12-22 11:58:23,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5681d6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:23, skipping insertion in model container [2021-12-22 11:58:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:22" (3/3) ... [2021-12-22 11:58:23,001 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2021-12-22 11:58:23,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:58:23,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:58:23,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:58:23,071 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 11:58:23,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:58:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 1944 states, 1149 states have (on average 1.2027850304612706) internal successors, (1382), 1154 states have internal predecessors, (1382), 774 states have call successors, (774), 19 states have call predecessors, (774), 19 states have return successors, (774), 772 states have call predecessors, (774), 774 states have call successors, (774) [2021-12-22 11:58:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2021-12-22 11:58:23,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:23,211 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 11:58:23,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:58:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2021-12-22 11:58:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:23,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970928650] [2021-12-22 11:58:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:23,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms