./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.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-?-f4b24e3 [2022-07-13 18:34:42,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:34:42,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:34:42,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:34:42,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:34:42,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:34:42,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:34:42,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:34:42,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:34:42,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:34:42,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:34:42,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:34:42,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:34:42,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:34:42,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:34:42,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:34:42,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:34:42,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:34:42,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:34:42,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:34:42,056 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:34:42,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:34:42,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:34:42,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:34:42,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:34:42,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:34:42,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:34:42,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:34:42,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:34:42,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:34:42,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:34:42,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:34:42,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:34:42,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:34:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:34:42,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:34:42,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:34:42,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:34:42,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:34:42,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:34:42,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:34:42,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:34:42,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:34:42,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:34:42,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:34:42,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:34:42,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:34:42,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:34:42,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:34:42,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:34:42,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:34:42,091 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:34:42,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:34:42,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:34:42,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:34:42,093 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:34:42,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:34:42,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:34:42,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:34:42,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:34:42,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:34:42,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:34:42,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:42,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:34:42,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:34:42,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:34:42,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:34:42,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:34:42,095 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:34:42,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:34:42,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:34:42,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2022-07-13 18:34:42,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:34:42,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:34:42,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:34:42,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:34:42,264 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:34:42,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-07-13 18:34:42,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d0a3683/0e791105e1ee4b469c806d151db15129/FLAG5f7d82ad6 [2022-07-13 18:34:42,765 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:34:42,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-07-13 18:34:42,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d0a3683/0e791105e1ee4b469c806d151db15129/FLAG5f7d82ad6 [2022-07-13 18:34:42,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d0a3683/0e791105e1ee4b469c806d151db15129 [2022-07-13 18:34:42,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:34:42,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:34:42,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:42,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:34:42,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:34:42,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:42" (1/1) ... [2022-07-13 18:34:42,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6f6a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:42, skipping insertion in model container [2022-07-13 18:34:42,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:34:42" (1/1) ... [2022-07-13 18:34:42,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:34:42,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:34:42,977 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] [2022-07-13 18:34:43,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:43,241 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:34:43,254 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] [2022-07-13 18:34:43,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:34:43,463 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:34:43,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43 WrapperNode [2022-07-13 18:34:43,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:34:43,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:43,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:34:43,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:34:43,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,619 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-07-13 18:34:43,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:34:43,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:34:43,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:34:43,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:34:43,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:34:43,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:34:43,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:34:43,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:34:43,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (1/1) ... [2022-07-13 18:34:43,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:34:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:34:43,844 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) [2022-07-13 18:34:43,860 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 [2022-07-13 18:34:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:34:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-13 18:34:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-13 18:34:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-13 18:34:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:34:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-13 18:34:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-13 18:34:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-13 18:34:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-13 18:34:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-13 18:34:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-13 18:34:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-13 18:34:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:34:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-13 18:34:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-13 18:34:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-13 18:34:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-13 18:34:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-13 18:34:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:34:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-13 18:34:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:34:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-13 18:34:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-13 18:34:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-13 18:34:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-13 18:34:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-13 18:34:43,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-13 18:34:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:34:43,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:34:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:34:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:34:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:34:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-13 18:34:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-13 18:34:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-13 18:34:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-13 18:34:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-13 18:34:44,301 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:34:44,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:34:50,903 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:34:50,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:34:50,922 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:34:50,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:50 BoogieIcfgContainer [2022-07-13 18:34:50,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:34:50,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:34:50,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:34:50,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:34:50,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:34:42" (1/3) ... [2022-07-13 18:34:50,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3fe161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:50, skipping insertion in model container [2022-07-13 18:34:50,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:34:43" (2/3) ... [2022-07-13 18:34:50,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3fe161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:34:50, skipping insertion in model container [2022-07-13 18:34:50,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:34:50" (3/3) ... [2022-07-13 18:34:50,937 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2022-07-13 18:34:50,951 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:34:50,951 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:34:51,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:34:51,057 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@40ba6105, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69e4b0a1 [2022-07-13 18:34:51,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:34:51,065 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) [2022-07-13 18:34:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2022-07-13 18:34:51,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:34:51,136 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:34:51,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:34:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:34:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -112777684, now seen corresponding path program 1 times [2022-07-13 18:34:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:34:51,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532993370] [2022-07-13 18:34:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:34:51,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms