./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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.3.M1.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 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:37:57,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:37:57,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:37:57,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:37:57,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:37:57,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:37:57,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:37:57,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:37:57,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:37:57,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:37:57,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:37:57,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:37:57,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:37:57,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:37:57,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:37:57,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:37:57,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:37:57,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:37:57,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:37:57,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:37:57,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:37:57,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:37:57,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:37:57,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:37:57,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:37:57,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:37:57,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:37:57,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:37:57,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:37:57,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:37:57,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:37:57,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:37:57,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:37:57,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:37:57,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:37:57,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:37:57,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:37:57,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:37:57,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:37:57,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:37:57,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:37:57,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:37:57,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:37:57,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:37:57,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:37:57,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:37:57,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:37:57,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:37:57,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:37:57,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:37:57,368 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:37:57,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:37:57,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:37:57,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:37:57,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:37:57,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:37:57,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:37:57,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:37:57,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:37:57,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:37:57,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:37:57,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:37:57,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:37:57,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:37:57,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:37:57,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:37:57,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:37:57,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:37:57,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:37:57,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:37:57,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2022-02-20 18:37:57,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:37:57,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:37:57,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:37:57,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:37:57,617 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:37:57,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-02-20 18:37:57,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec1a91bc/432412908e254b15a175d9c386bbc9cc/FLAG408932049 [2022-02-20 18:37:58,272 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:37:58,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-02-20 18:37:58,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec1a91bc/432412908e254b15a175d9c386bbc9cc/FLAG408932049 [2022-02-20 18:37:58,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec1a91bc/432412908e254b15a175d9c386bbc9cc [2022-02-20 18:37:58,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:37:58,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:37:58,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:37:58,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:37:58,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:37:58,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:37:58" (1/1) ... [2022-02-20 18:37:58,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3966762a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:58, skipping insertion in model container [2022-02-20 18:37:58,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:37:58" (1/1) ... [2022-02-20 18:37:58,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:37:58,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:37:58,749 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.3.M1.c[1762,1775] [2022-02-20 18:37:59,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:37:59,211 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:37:59,224 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.3.M1.c[1762,1775] [2022-02-20 18:37:59,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:37:59,516 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:37:59,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59 WrapperNode [2022-02-20 18:37:59,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:37:59,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:37:59,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:37:59,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:37:59,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:37:59,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:37:59,870 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-02-20 18:37:59,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:37:59,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:37:59,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:37:59,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:37:59,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:37:59,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:37:59,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:37:59,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:38:00,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:38:00,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:38:00,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:38:00,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:38:00,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:38:00,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:38:00,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:38:00,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (1/1) ... [2022-02-20 18:38:00,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:38:00,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:38:00,185 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) [2022-02-20 18:38:00,195 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 [2022-02-20 18:38:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:38:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:38:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:38:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:38:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:38:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:38:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:38:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:38:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:38:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:38:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-02-20 18:38:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-02-20 18:38:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:38:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:38:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:38:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:38:00,232 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:38:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:38:00,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:38:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:38:00,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:38:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:38:00,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:38:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:38:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:38:00,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:38:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:38:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-02-20 18:38:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-02-20 18:38:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:38:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:38:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-02-20 18:38:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-02-20 18:38:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:38:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:38:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:38:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:38:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:38:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:38:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:38:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:38:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:38:00,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:38:00,739 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:38:00,741 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:38:08,519 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:38:08,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:38:08,539 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:38:08,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:38:08 BoogieIcfgContainer [2022-02-20 18:38:08,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:38:08,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:38:08,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:38:08,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:38:08,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:37:58" (1/3) ... [2022-02-20 18:38:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:38:08, skipping insertion in model container [2022-02-20 18:38:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:37:59" (2/3) ... [2022-02-20 18:38:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:38:08, skipping insertion in model container [2022-02-20 18:38:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:38:08" (3/3) ... [2022-02-20 18:38:08,550 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2022-02-20 18:38:08,555 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:38:08,555 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:38:08,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:38:08,609 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 [2022-02-20 18:38:08,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:38:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1146 states have (on average 1.2033158813263525) internal successors, (1379), 1150 states have internal predecessors, (1379), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2022-02-20 18:38:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2022-02-20 18:38:08,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:38:08,767 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] [2022-02-20 18:38:08,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:38:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:38:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash -112777684, now seen corresponding path program 1 times [2022-02-20 18:38:08,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:38:08,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322342660] [2022-02-20 18:38:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:38:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms