./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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.M1-1.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 d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:36:23,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:36:23,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:36:23,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:36:23,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:36:23,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:36:23,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:36:23,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:36:23,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:36:23,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:36:23,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:36:23,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:36:23,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:36:23,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:36:23,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:36:23,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:36:23,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:36:23,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:36:23,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:36:23,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:36:23,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:36:23,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:36:23,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:36:23,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:36:23,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:36:23,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:36:23,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:36:23,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:36:23,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:36:23,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:36:23,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:36:23,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:36:23,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:36:23,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:36:23,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:36:23,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:36:23,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:36:23,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:36:23,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:36:23,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:36:23,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:36:23,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:36:24,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:36:24,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:36:24,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:36:24,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:36:24,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:36:24,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:36:24,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:36:24,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:36:24,021 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:36:24,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:36:24,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:36:24,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:36:24,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:36:24,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:36:24,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:36:24,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:36:24,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:36:24,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:36:24,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:24,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:36:24,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:36:24,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:36:24,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:36:24,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 [2021-12-21 13:36:24,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:36:24,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:36:24,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:36:24,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:36:24,255 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:36:24,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2021-12-21 13:36:24,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca6f18dd/3e03da07d8db46fc83e8c651ef63bb67/FLAG796dd38f1 [2021-12-21 13:36:24,770 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:36:24,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2021-12-21 13:36:24,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca6f18dd/3e03da07d8db46fc83e8c651ef63bb67/FLAG796dd38f1 [2021-12-21 13:36:25,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca6f18dd/3e03da07d8db46fc83e8c651ef63bb67 [2021-12-21 13:36:25,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:36:25,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:36:25,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:25,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:36:25,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:36:25,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:25,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e69a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25, skipping insertion in model container [2021-12-21 13:36:25,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:25,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:36:25,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:36:25,584 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.M1-1.c[1510,1523] [2021-12-21 13:36:25,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:25,763 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:36:25,771 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.M1-1.c[1510,1523] [2021-12-21 13:36:25,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:36:25,930 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:36:25,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25 WrapperNode [2021-12-21 13:36:25,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:36:25,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:25,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:36:25,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:36:25,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:25,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,088 INFO L137 Inliner]: procedures = 55, calls = 2033, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 3946 [2021-12-21 13:36:26,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:36:26,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:36:26,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:36:26,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:36:26,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:36:26,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:36:26,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:36:26,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:36:26,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (1/1) ... [2021-12-21 13:36:26,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:36:26,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:36:26,342 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) [2021-12-21 13:36:26,359 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 [2021-12-21 13:36:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:36:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-21 13:36:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-21 13:36:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:36:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:36:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 13:36:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-21 13:36:26,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-21 13:36:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-21 13:36:26,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-21 13:36:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-21 13:36:26,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-21 13:36:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:36:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-21 13:36:26,385 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-21 13:36:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-21 13:36:26,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-21 13:36:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:36:26,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:36:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:36:26,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:36:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 13:36:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:36:26,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-21 13:36:26,387 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 13:36:26,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:36:26,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:36:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-21 13:36:26,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-21 13:36:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-21 13:36:26,388 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-21 13:36:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:36:26,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:36:26,714 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:36:26,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:36:32,588 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:36:32,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:36:32,607 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:36:32,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:32 BoogieIcfgContainer [2021-12-21 13:36:32,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:36:32,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:36:32,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:36:32,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:36:32,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:36:25" (1/3) ... [2021-12-21 13:36:32,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747ddaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:32, skipping insertion in model container [2021-12-21 13:36:32,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:36:25" (2/3) ... [2021-12-21 13:36:32,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747ddaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:36:32, skipping insertion in model container [2021-12-21 13:36:32,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:36:32" (3/3) ... [2021-12-21 13:36:32,628 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-1.c [2021-12-21 13:36:32,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:36:32,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:36:32,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:36:32,685 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 [2021-12-21 13:36:32,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:36:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 1597 states, 969 states have (on average 1.2291021671826625) internal successors, (1191), 974 states have internal predecessors, (1191), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 609 states have call predecessors, (611), 611 states have call successors, (611) [2021-12-21 13:36:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2134 [2021-12-21 13:36:32,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:36:32,868 INFO L514 BasicCegarLoop]: trace histogram [241, 241, 241, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:36:32,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:36:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:36:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash -937610375, now seen corresponding path program 1 times [2021-12-21 13:36:32,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:36:32,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553231722] [2021-12-21 13:36:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:36:32,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms