./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 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/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-dev-e19ca92 [2021-12-22 11:56:13,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:56:13,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:56:13,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:56:13,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:56:13,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:56:13,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:56:13,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:56:13,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:56:13,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:56:13,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:56:13,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:56:13,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:56:13,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:56:13,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:56:13,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:56:13,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:56:13,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:56:13,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:56:13,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:56:13,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:56:13,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:56:13,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:56:13,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:56:13,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:56:13,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:56:13,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:56:13,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:56:13,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:56:13,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:56:13,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:56:13,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:56:13,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:56:13,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:56:13,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:56:13,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:56:13,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:56:13,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:56:13,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:56:13,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:56:13,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:56:13,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:56:13,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:56:13,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:56:13,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:56:13,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:56:13,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:56:13,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:56:13,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:56:13,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:56:13,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:56:13,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:56:13,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:56:13,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:56:13,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:56:13,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:56:13,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:56:13,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:56:13,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:56:13,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:13,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:56:13,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:56:13,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:56:13,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:56:13,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:56:13,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:56:13,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:56:13,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:56:13,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:56:13,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6240875fd021ef86002633b5e6fdfcec4ffcbe681ff045b4f4e341a758fe554a [2021-12-22 11:56:13,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:56:13,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:56:13,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:56:13,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:56:13,725 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:56:13,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2021-12-22 11:56:13,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf6ffdb/467cc122264649a999ea434ff6fb5fd1/FLAG09443a100 [2021-12-22 11:56:14,335 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:56:14,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-1.c [2021-12-22 11:56:14,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf6ffdb/467cc122264649a999ea434ff6fb5fd1/FLAG09443a100 [2021-12-22 11:56:14,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf6ffdb/467cc122264649a999ea434ff6fb5fd1 [2021-12-22 11:56:14,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:56:14,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:56:14,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:14,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:56:14,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:56:14,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:14" (1/1) ... [2021-12-22 11:56:14,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479906a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:14, skipping insertion in model container [2021-12-22 11:56:14,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:14" (1/1) ... [2021-12-22 11:56:14,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:56:14,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:56:14,867 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] [2021-12-22 11:56:15,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:15,528 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:56:15,544 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] [2021-12-22 11:56:16,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:16,277 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:56:16,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16 WrapperNode [2021-12-22 11:56:16,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:16,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:16,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:56:16,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:56:16,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:16,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:17,500 INFO L137 Inliner]: procedures = 58, calls = 18195, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39852 [2021-12-22 11:56:17,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:17,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:56:17,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:56:17,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:56:17,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:17,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:17,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:17,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:18,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:18,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:18,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:18,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:56:18,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:56:18,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:56:18,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:56:18,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (1/1) ... [2021-12-22 11:56:18,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:56:18,641 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 11:56:18,666 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 11:56:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:56:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:56:18,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:56:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:56:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:20,276 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:56:20,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:56:45,432 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:56:45,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:56:45,479 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:56:45,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:45 BoogieIcfgContainer [2021-12-22 11:56:45,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:56:45,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:56:45,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:56:45,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:56:45,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:56:14" (1/3) ... [2021-12-22 11:56:45,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b5fc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:45, skipping insertion in model container [2021-12-22 11:56:45,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:16" (2/3) ... [2021-12-22 11:56:45,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b5fc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:45, skipping insertion in model container [2021-12-22 11:56:45,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:45" (3/3) ... [2021-12-22 11:56:45,499 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-1.c [2021-12-22 11:56:45,505 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:56:45,505 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:56:45,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:56:45,587 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 11:56:45,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:56:45,742 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) [2021-12-22 11:56:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2021-12-22 11:56:46,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:56:46,097 INFO L514 BasicCegarLoop]: 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, 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1, 1, 1, 1, 1] [2021-12-22 11:56:46,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:56:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:56:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1377856296, now seen corresponding path program 1 times [2021-12-22 11:56:46,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:56:46,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124439642] [2021-12-22 11:56:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:56:46,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms