./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.1.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 3815bc174681e4b15285bf80b6019df1e4400d301be17580b1900d66fa790fc8 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:03:40,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:03:40,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:03:40,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:03:40,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:03:40,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:03:40,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:03:40,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:03:40,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:03:40,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:03:40,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:03:40,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:03:40,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:03:40,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:03:40,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:03:40,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:03:40,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:03:40,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:03:40,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:03:40,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:03:40,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:03:40,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:03:40,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:03:40,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:03:40,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:03:40,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:03:40,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:03:40,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:03:40,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:03:40,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:03:40,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:03:40,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:03:40,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:03:40,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:03:40,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:03:40,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:03:40,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:03:40,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:03:40,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:03:40,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:03:40,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:03:40,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:03:40,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:03:40,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:03:40,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:03:40,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:03:40,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:03:40,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:03:40,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:03:40,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:03:40,595 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:03:40,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:03:40,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:03:40,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:03:40,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:03:40,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:03:40,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:03:40,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:03:40,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:03:40,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:03:40,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:03:40,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:03:40,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:03:40,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:03:40,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:03:40,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3815bc174681e4b15285bf80b6019df1e4400d301be17580b1900d66fa790fc8 [2021-12-17 16:03:40,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:03:40,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:03:40,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:03:40,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:03:40,860 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:03:40,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2021-12-17 16:03:40,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adfa5d09/3a79b266f4a24a548dec61d34bfd5b9f/FLAGb0ba3a8c7 [2021-12-17 16:03:41,392 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:03:41,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2021-12-17 16:03:41,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adfa5d09/3a79b266f4a24a548dec61d34bfd5b9f/FLAGb0ba3a8c7 [2021-12-17 16:03:41,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adfa5d09/3a79b266f4a24a548dec61d34bfd5b9f [2021-12-17 16:03:41,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:03:41,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:03:41,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:03:41,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:03:41,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:03:41,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:41" (1/1) ... [2021-12-17 16:03:41,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e3dedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:41, skipping insertion in model container [2021-12-17 16:03:41,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:41" (1/1) ... [2021-12-17 16:03:41,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:03:42,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:03:42,157 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.1.M4-2.c[1509,1522] [2021-12-17 16:03:42,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:03:42,441 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:03:42,450 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.1.M4-2.c[1509,1522] [2021-12-17 16:03:42,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:03:42,551 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:03:42,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42 WrapperNode [2021-12-17 16:03:42,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:03:42,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:03:42,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:03:42,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:03:42,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,738 INFO L137 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2021-12-17 16:03:42,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:03:42,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:03:42,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:03:42,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:03:42,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:03:42,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:03:42,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:03:42,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:03:42,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (1/1) ... [2021-12-17 16:03:42,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:03:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:03:42,896 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) [2021-12-17 16:03:42,911 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 [2021-12-17 16:03:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:03:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 16:03:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 16:03:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:03:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:03:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 16:03:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 16:03:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 16:03:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 16:03:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 16:03:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 16:03:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 16:03:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 16:03:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 16:03:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 16:03:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 16:03:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 16:03:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:03:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:03:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:03:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:03:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 16:03:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-17 16:03:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-17 16:03:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-17 16:03:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-17 16:03:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 16:03:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 16:03:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 16:03:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 16:03:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 16:03:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:03:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:03:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:03:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 16:03:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 16:03:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 16:03:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 16:03:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:03:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:03:43,379 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:03:43,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:03:49,516 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:03:49,531 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:03:49,532 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 16:03:49,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:03:49 BoogieIcfgContainer [2021-12-17 16:03:49,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:03:49,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:03:49,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:03:49,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:03:49,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:03:41" (1/3) ... [2021-12-17 16:03:49,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467cee5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:03:49, skipping insertion in model container [2021-12-17 16:03:49,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:42" (2/3) ... [2021-12-17 16:03:49,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467cee5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:03:49, skipping insertion in model container [2021-12-17 16:03:49,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:03:49" (3/3) ... [2021-12-17 16:03:49,541 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-2.c [2021-12-17 16:03:49,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:03:49,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:03:49,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:03:49,615 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 [2021-12-17 16:03:49,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:03:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 977 states have internal predecessors, (1194), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-17 16:03:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8483 [2021-12-17 16:03:50,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:03:50,180 INFO L514 BasicCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:03:50,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:03:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:03:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash -767459317, now seen corresponding path program 1 times [2021-12-17 16:03:50,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:03:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713451899] [2021-12-17 16:03:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:03:50,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms