./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-2.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/rekcba_aso.2.M4-2.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 13ab100f899a57e5eca7e0526610c7b743f980d5e72b80cc180b4d884d35b9a9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:58:23,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:58:23,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:58:23,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:58:23,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:58:23,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:58:23,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:58:23,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:58:23,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:58:23,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:58:23,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:58:23,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:58:23,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:58:23,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:58:23,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:58:23,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:58:23,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:58:23,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:58:23,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:58:23,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:58:23,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:58:23,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:58:23,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:58:23,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:58:23,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:58:23,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:58:23,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:58:23,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:58:23,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:58:23,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:58:23,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:58:23,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:58:23,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:58:23,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:58:23,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:58:23,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:58:23,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:58:23,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:58:23,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:58:23,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:58:23,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:58:23,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:58:23,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:58:23,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:58:23,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:58:23,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:58:23,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:58:23,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:58:23,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:58:23,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:58:23,145 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:58:23,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:58:23,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:58:23,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:58:23,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:58:23,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:58:23,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:58:23,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:58:23,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:58:23,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:58:23,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:58:23,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab100f899a57e5eca7e0526610c7b743f980d5e72b80cc180b4d884d35b9a9 [2021-12-17 15:58:23,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:58:23,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:58:23,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:58:23,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:58:23,324 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:58:23,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-2.c [2021-12-17 15:58:23,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef28b9fdb/3809b9dd749f4be98208841224b42414/FLAGf341f62df [2021-12-17 15:58:23,942 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:58:23,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-2.c [2021-12-17 15:58:23,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef28b9fdb/3809b9dd749f4be98208841224b42414/FLAGf341f62df [2021-12-17 15:58:24,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef28b9fdb/3809b9dd749f4be98208841224b42414 [2021-12-17 15:58:24,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:58:24,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:58:24,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:58:24,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:58:24,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:58:24,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:58:24" (1/1) ... [2021-12-17 15:58:24,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645fabfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:24, skipping insertion in model container [2021-12-17 15:58:24,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:58:24" (1/1) ... [2021-12-17 15:58:24,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:58:24,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:58:24,424 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_aso.2.M4-2.c[2320,2333] [2021-12-17 15:58:25,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:58:25,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:58:25,316 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_aso.2.M4-2.c[2320,2333] [2021-12-17 15:58:25,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:58:25,904 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:58:25,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25 WrapperNode [2021-12-17 15:58:25,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:58:25,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:58:25,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:58:25,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:58:25,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:26,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:27,369 INFO L137 Inliner]: procedures = 72, calls = 21416, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 45878 [2021-12-17 15:58:27,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:58:27,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:58:27,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:58:27,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:58:27,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:27,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:27,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:27,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:28,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:28,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:28,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:28,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:58:28,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:58:28,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:58:28,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:58:28,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (1/1) ... [2021-12-17 15:58:28,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:58:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:58:28,948 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) [2021-12-17 15:58:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:58:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_trans [2021-12-17 15:58:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_trans [2021-12-17 15:58:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-17 15:58:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-17 15:58:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 15:58:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 15:58:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 15:58:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 15:58:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 15:58:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 15:58:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 15:58:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 15:58:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 15:58:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-12-17 15:58:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-12-17 15:58:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 15:58:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 15:58:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 15:58:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 15:58:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 15:58:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 15:58:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 15:58:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-17 15:58:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-17 15:58:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-12-17 15:58:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-12-17 15:58:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 15:58:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 15:58:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 15:58:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 15:58:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 15:58:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 15:58:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 15:58:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 15:58:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 15:58:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 15:58:28,966 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 [2021-12-17 15:58:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 15:58:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 15:58:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-17 15:58:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-17 15:58:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-17 15:58:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-17 15:58:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 15:58:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 15:58:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:58:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:58:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:58:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 15:58:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 15:58:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 15:58:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 15:58:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 15:58:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 15:58:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-17 15:58:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-17 15:58:30,831 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:58:30,833 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:01:03,508 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:01:03,555 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:01:03,555 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 16:01:03,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:03 BoogieIcfgContainer [2021-12-17 16:01:03,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:01:03,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:01:03,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:01:03,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:01:03,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:58:24" (1/3) ... [2021-12-17 16:01:03,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2388bb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:03, skipping insertion in model container [2021-12-17 16:01:03,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:58:25" (2/3) ... [2021-12-17 16:01:03,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2388bb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:03, skipping insertion in model container [2021-12-17 16:01:03,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:03" (3/3) ... [2021-12-17 16:01:03,573 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_aso.2.M4-2.c [2021-12-17 16:01:03,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:01:03,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:01:03,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:01:03,653 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 [2021-12-17 16:01:03,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:01:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 13237 states, 8527 states have (on average 1.3011610179430046) internal successors, (11095), 8640 states have internal predecessors, (11095), 4684 states have call successors, (4684), 24 states have call predecessors, (4684), 24 states have return successors, (4684), 4682 states have call predecessors, (4684), 4684 states have call successors, (4684) [2021-12-17 16:01:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8469 [2021-12-17 16:01:04,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:01:04,499 INFO L514 BasicCegarLoop]: trace histogram [979, 979, 979, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:01:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1605075142, now seen corresponding path program 1 times [2021-12-17 16:01:04,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:01:04,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236424090] [2021-12-17 16:01:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:01:04,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms