./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:20:55,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:20:55,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:20:55,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:20:55,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:20:55,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:20:55,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:20:55,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:20:55,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:20:55,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:20:55,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:20:55,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:20:55,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:20:55,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:20:55,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:20:55,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:20:55,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:20:55,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:20:55,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:20:55,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:20:55,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:20:55,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:20:55,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:20:55,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:20:55,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:20:55,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:20:55,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:20:55,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:20:55,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:20:55,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:20:55,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:20:55,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:20:55,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:20:55,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:20:55,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:20:55,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:20:55,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:20:55,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:20:55,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:20:55,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:20:55,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:20:55,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:20:55,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:20:55,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:20:55,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:20:55,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:20:55,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:20:55,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:20:55,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:20:55,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:20:55,881 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:20:55,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:20:55,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:20:55,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:20:55,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:20:55,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:20:55,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:20:55,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:20:55,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:20:55,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:20:55,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:20:55,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:20:55,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:20:55,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:20:55,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:20:55,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:20:55,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:20:55,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:20:55,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:20:55,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:20:55,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:20:55,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:20:55,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:20:55,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:20:55,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:20:55,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:20:55,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 [2021-12-16 01:20:56,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:20:56,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:20:56,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:20:56,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:20:56,172 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:20:56,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2021-12-16 01:20:56,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8faf039a1/f326a947ed03465f966c24d559c34236/FLAG2e192b1f0 [2021-12-16 01:20:56,798 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:20:56,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2021-12-16 01:20:56,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8faf039a1/f326a947ed03465f966c24d559c34236/FLAG2e192b1f0 [2021-12-16 01:20:57,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8faf039a1/f326a947ed03465f966c24d559c34236 [2021-12-16 01:20:57,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:20:57,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:20:57,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:20:57,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:20:57,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:20:57,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:20:57" (1/1) ... [2021-12-16 01:20:57,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b75175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:57, skipping insertion in model container [2021-12-16 01:20:57,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:20:57" (1/1) ... [2021-12-16 01:20:57,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:20:57,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:20:57,474 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.2.M1-2.c[1682,1695] [2021-12-16 01:20:57,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:20:57,802 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:20:57,818 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.2.M1-2.c[1682,1695] [2021-12-16 01:20:58,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:20:58,068 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:20:58,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58 WrapperNode [2021-12-16 01:20:58,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:20:58,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:20:58,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:20:58,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:20:58,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,285 INFO L137 Inliner]: procedures = 56, calls = 2059, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4010 [2021-12-16 01:20:58,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:20:58,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:20:58,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:20:58,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:20:58,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:20:58,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:20:58,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:20:58,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:20:58,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (1/1) ... [2021-12-16 01:20:58,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:20:58,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:20:58,545 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) [2021-12-16 01:20:58,570 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 [2021-12-16 01:20:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:20:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-16 01:20:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-16 01:20:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:20:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:20:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 01:20:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-16 01:20:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-16 01:20:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-16 01:20:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-16 01:20:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-16 01:20:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-16 01:20:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 01:20:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-16 01:20:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-16 01:20:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-16 01:20:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-16 01:20:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:20:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:20:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:20:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:20:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 01:20:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:20:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:20:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 01:20:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:20:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:20:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-16 01:20:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-16 01:20:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:20:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:20:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:20:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:20:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:20:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-16 01:20:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-16 01:20:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-16 01:20:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-16 01:20:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:20:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:20:59,034 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:20:59,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:21:05,277 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:21:05,302 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:21:05,302 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 01:21:05,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:21:05 BoogieIcfgContainer [2021-12-16 01:21:05,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:21:05,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:21:05,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:21:05,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:21:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:20:57" (1/3) ... [2021-12-16 01:21:05,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef2dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:21:05, skipping insertion in model container [2021-12-16 01:21:05,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:20:58" (2/3) ... [2021-12-16 01:21:05,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef2dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:21:05, skipping insertion in model container [2021-12-16 01:21:05,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:21:05" (3/3) ... [2021-12-16 01:21:05,317 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-2.c [2021-12-16 01:21:05,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:21:05,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:21:05,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:21:05,383 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 [2021-12-16 01:21:05,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:21:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 999 states have (on average 1.2262262262262262) internal successors, (1225), 1004 states have internal predecessors, (1225), 638 states have call successors, (638), 16 states have call predecessors, (638), 16 states have return successors, (638), 636 states have call predecessors, (638), 638 states have call successors, (638) [2021-12-16 01:21:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2021-12-16 01:21:05,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:21:05,510 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:21:05,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:21:05,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:21:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -66308904, now seen corresponding path program 1 times [2021-12-16 01:21:05,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:21:05,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655797111] [2021-12-16 01:21:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:21:05,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms