./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.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/rekcba_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 d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:19:27,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:19:27,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:19:27,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:19:27,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:19:27,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:19:27,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:19:27,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:19:27,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:19:27,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:19:27,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:19:27,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:19:27,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:19:27,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:19:27,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:19:27,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:19:27,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:19:27,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:19:27,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:19:27,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:19:27,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:19:27,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:19:27,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:19:27,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:19:27,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:19:27,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:19:27,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:19:27,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:19:27,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:19:27,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:19:27,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:19:27,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:19:27,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:19:27,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:19:27,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:19:27,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:19:27,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:19:27,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:19:27,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:19:27,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:19:27,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:19:27,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:19:27,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:19:27,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:19:27,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:19:27,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:19:27,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:19:27,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:19:27,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:19:27,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:19:27,188 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:19:27,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:19:27,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:19:27,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:19:27,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:27,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:19:27,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:19:27,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:19:27,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:19:27,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:19:27,193 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:19:27,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:19:27,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:19:27,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:19:27,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf [2021-12-16 01:19:27,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:19:27,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:19:27,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:19:27,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:19:27,377 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:19:27,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2021-12-16 01:19:27,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687d1563/256fdfe31ad44e78820ce4380950cc60/FLAG3739a7c45 [2021-12-16 01:19:27,831 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:19:27,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2021-12-16 01:19:27,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687d1563/256fdfe31ad44e78820ce4380950cc60/FLAG3739a7c45 [2021-12-16 01:19:28,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687d1563/256fdfe31ad44e78820ce4380950cc60 [2021-12-16 01:19:28,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:19:28,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:19:28,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:28,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:19:28,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:19:28,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e85fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28, skipping insertion in model container [2021-12-16 01:19:28,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:19:28,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:19:28,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2021-12-16 01:19:28,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:28,644 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:19:28,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2021-12-16 01:19:28,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:19:28,804 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:19:28,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28 WrapperNode [2021-12-16 01:19:28,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:19:28,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:28,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:19:28,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:19:28,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,954 INFO L137 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2021-12-16 01:19:28,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:19:28,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:19:28,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:19:28,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:19:28,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:28,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:29,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:29,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:29,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:19:29,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:19:29,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:19:29,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:19:29,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (1/1) ... [2021-12-16 01:19:29,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:19:29,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:19:29,216 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 01:19:29,234 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 01:19:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:19:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-16 01:19:29,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-16 01:19:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:29,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-16 01:19:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 01:19:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-16 01:19:29,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-16 01:19:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-16 01:19:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-16 01:19:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-16 01:19:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-16 01:19:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-16 01:19:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 01:19:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-16 01:19:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-16 01:19:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-16 01:19:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-16 01:19:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-16 01:19:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 01:19:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-16 01:19:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 01:19:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:19:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:19:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-16 01:19:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-16 01:19:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-16 01:19:29,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-16 01:19:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:19:29,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:19:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:19:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:19:29,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:19:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-16 01:19:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-16 01:19:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-16 01:19:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-16 01:19:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-16 01:19:29,580 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:19:29,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:19:35,438 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:19:35,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:19:35,456 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 01:19:35,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:35 BoogieIcfgContainer [2021-12-16 01:19:35,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:19:35,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:19:35,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:19:35,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:19:35,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:19:28" (1/3) ... [2021-12-16 01:19:35,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6a8342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:35, skipping insertion in model container [2021-12-16 01:19:35,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:28" (2/3) ... [2021-12-16 01:19:35,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6a8342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:35, skipping insertion in model container [2021-12-16 01:19:35,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:35" (3/3) ... [2021-12-16 01:19:35,468 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M1.c [2021-12-16 01:19:35,472 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:19:35,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:19:35,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:19:35,533 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 01:19:35,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:19:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 815 states have (on average 1.2748466257668711) internal successors, (1039), 846 states have internal predecessors, (1039), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2021-12-16 01:19:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2021-12-16 01:19:35,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:19:35,606 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:35,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:19:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:19:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1711506897, now seen corresponding path program 1 times [2021-12-16 01:19:35,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:19:35,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082474136] [2021-12-16 01:19:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:19:35,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms