./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.1.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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:50:45,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:50:45,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:50:45,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:50:45,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:50:45,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:50:45,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:50:45,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:50:45,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:50:45,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:50:45,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:50:45,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:50:45,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:50:45,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:50:45,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:50:45,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:50:45,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:50:45,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:50:45,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:50:45,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:50:45,068 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:50:45,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:50:45,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:50:45,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:50:45,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:50:45,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:50:45,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:50:45,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:50:45,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:50:45,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:50:45,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:50:45,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:50:45,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:50:45,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:50:45,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:50:45,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:50:45,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:50:45,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:50:45,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:50:45,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:50:45,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:50:45,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:50:45,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:50:45,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:50:45,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:50:45,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:50:45,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:50:45,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:50:45,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:50:45,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:50:45,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:50:45,108 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:50:45,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:50:45,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:50:45,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:50:45,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:50:45,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:50:45,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:50:45,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:50:45,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:50:45,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:50:45,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:50:45,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:50:45,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:50:45,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:50:45,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:50:45,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2022-07-12 06:50:45,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:50:45,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:50:45,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:50:45,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:50:45,331 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:50:45,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-12 06:50:45,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77921c463/3422e6f12a294208aad7145556acd2a2/FLAG39fbfa7fb [2022-07-12 06:50:45,997 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:50:45,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-07-12 06:50:46,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77921c463/3422e6f12a294208aad7145556acd2a2/FLAG39fbfa7fb [2022-07-12 06:50:46,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77921c463/3422e6f12a294208aad7145556acd2a2 [2022-07-12 06:50:46,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:50:46,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:50:46,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:50:46,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:50:46,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:50:46,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:50:46" (1/1) ... [2022-07-12 06:50:46,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a18918a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:46, skipping insertion in model container [2022-07-12 06:50:46,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:50:46" (1/1) ... [2022-07-12 06:50:46,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:50:46,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:50:46,749 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/rekcba_nxt.1.M4-1.c[1673,1686] [2022-07-12 06:50:47,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:50:47,650 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:50:47,672 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.1.M4-1.c[1673,1686] [2022-07-12 06:50:48,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:50:48,372 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:50:48,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48 WrapperNode [2022-07-12 06:50:48,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:50:48,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:50:48,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:50:48,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:50:48,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:48,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:49,836 INFO L137 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-07-12 06:50:49,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:50:49,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:50:49,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:50:49,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:50:49,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:49,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:50:50,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:50:50,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:50:50,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:50:50,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (1/1) ... [2022-07-12 06:50:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:50:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:50:51,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:50:51,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:50:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:50:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-12 06:50:51,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-12 06:50:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:50:51,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-12 06:50:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 06:50:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-12 06:50:51,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-12 06:50:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-12 06:50:51,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-12 06:50:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-12 06:50:51,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-12 06:50:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 06:50:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-12 06:50:51,129 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-12 06:50:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-12 06:50:51,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-12 06:50:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:50:51,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-12 06:50:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:50:51,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-12 06:50:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 06:50:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:50:51,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-12 06:50:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 06:50:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-12 06:50:51,130 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-12 06:50:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 06:50:51,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 06:50:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:50:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:50:51,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:50:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-12 06:50:51,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-12 06:50:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-12 06:50:51,131 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-12 06:50:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:50:51,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-12 06:50:52,886 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:50:52,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:51:54,747 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:51:54,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:51:54,793 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:51:54,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:51:54 BoogieIcfgContainer [2022-07-12 06:51:54,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:51:54,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:51:54,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:51:54,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:51:54,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:50:46" (1/3) ... [2022-07-12 06:51:54,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55104b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:51:54, skipping insertion in model container [2022-07-12 06:51:54,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:50:48" (2/3) ... [2022-07-12 06:51:54,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55104b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:51:54, skipping insertion in model container [2022-07-12 06:51:54,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:51:54" (3/3) ... [2022-07-12 06:51:54,813 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-07-12 06:51:54,825 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:51:54,825 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:51:55,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:51:55,034 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15ff88e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58108f30 [2022-07-12 06:51:55,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:51:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-07-12 06:51:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-07-12 06:51:55,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:51:55,498 INFO L195 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1] [2022-07-12 06:51:55,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:51:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:51:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2022-07-12 06:51:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:51:55,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560009832] [2022-07-12 06:51:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:51:55,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms