./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_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 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:35:07,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:35:07,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:35:07,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:35:07,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:35:07,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:35:07,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:35:07,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:35:07,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:35:07,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:35:07,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:35:07,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:35:07,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:35:07,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:35:07,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:35:07,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:35:07,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:35:07,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:35:07,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:35:07,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:35:07,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:35:07,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:35:07,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:35:07,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:35:07,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:35:07,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:35:07,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:35:07,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:35:07,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:35:07,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:35:07,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:35:07,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:35:07,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:35:07,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:35:07,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:35:07,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:35:07,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:35:07,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:35:07,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:35:07,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:35:07,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:35:07,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:35:07,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:35:07,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:35:07,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:35:07,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:35:07,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:35:07,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:35:07,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:35:07,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:35:07,197 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:35:07,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:35:07,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:35:07,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:35:07,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:35:07,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:35:07,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:35:07,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:35:07,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:35:07,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:35:07,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:35:07,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:35:07,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:35:07,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:35:07,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:35:07,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:35:07,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:35:07,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:35:07,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:35:07,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:35:07,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b [2021-12-21 13:35:07,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:35:07,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:35:07,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:35:07,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:35:07,380 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:35:07,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2021-12-21 13:35:07,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ace0d49/68e857256886456a9633eb730a3c9ef4/FLAGea68b84b0 [2021-12-21 13:35:07,847 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:35:07,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2021-12-21 13:35:07,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ace0d49/68e857256886456a9633eb730a3c9ef4/FLAGea68b84b0 [2021-12-21 13:35:07,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ace0d49/68e857256886456a9633eb730a3c9ef4 [2021-12-21 13:35:07,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:35:07,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:35:07,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:35:07,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:35:07,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:35:07,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:35:07" (1/1) ... [2021-12-21 13:35:07,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1bccf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:07, skipping insertion in model container [2021-12-21 13:35:07,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:35:07" (1/1) ... [2021-12-21 13:35:07,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:35:07,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:35:08,087 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.2.M1-2.c[1937,1950] [2021-12-21 13:35:08,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:35:08,320 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:35:08,337 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.2.M1-2.c[1937,1950] [2021-12-21 13:35:08,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:35:08,513 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:35:08,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08 WrapperNode [2021-12-21 13:35:08,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:35:08,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:35:08,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:35:08,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:35:08,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,646 INFO L137 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3840 [2021-12-21 13:35:08,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:35:08,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:35:08,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:35:08,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:35:08,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:35:08,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:35:08,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:35:08,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:35:08,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (1/1) ... [2021-12-21 13:35:08,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:35:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:35:08,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:35:08,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:35:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:35:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-21 13:35:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-21 13:35:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:35:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-21 13:35:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 13:35:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-21 13:35:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-21 13:35:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-21 13:35:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-21 13:35:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-21 13:35:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-21 13:35:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:35:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-21 13:35:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-21 13:35:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-21 13:35:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-21 13:35:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:35:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-21 13:35:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:35:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-21 13:35:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 13:35:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:35:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-21 13:35:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:35:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-21 13:35:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-21 13:35:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-21 13:35:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-21 13:35:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 13:35:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 13:35:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:35:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:35:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:35:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-21 13:35:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-21 13:35:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-21 13:35:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-21 13:35:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:35:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-21 13:35:09,180 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:35:09,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:35:14,780 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:35:14,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:35:14,795 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:35:14,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:35:14 BoogieIcfgContainer [2021-12-21 13:35:14,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:35:14,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:35:14,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:35:14,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:35:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:35:07" (1/3) ... [2021-12-21 13:35:14,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7940cb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:35:14, skipping insertion in model container [2021-12-21 13:35:14,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:35:08" (2/3) ... [2021-12-21 13:35:14,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7940cb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:35:14, skipping insertion in model container [2021-12-21 13:35:14,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:35:14" (3/3) ... [2021-12-21 13:35:14,807 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2021-12-21 13:35:14,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:35:14,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:35:14,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:35:14,860 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:35:14,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:35:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 1203 states, 766 states have (on average 1.283289817232376) internal successors, (983), 798 states have internal predecessors, (983), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2021-12-21 13:35:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2021-12-21 13:35:14,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:35:14,946 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:35:14,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:35:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:35:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash -705707352, now seen corresponding path program 1 times [2021-12-21 13:35:14,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:35:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078028070] [2021-12-21 13:35:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:35:14,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms