./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/heavy_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loops/heavy_true-unreach-call.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63303d7ef35f153a8bd897bdcb496a54fed422c9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:23:13,690 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:23:13,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:23:13,704 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:23:13,705 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:23:13,706 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:23:13,707 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:23:13,709 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:23:13,710 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:23:13,711 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:23:13,712 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:23:13,712 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:23:13,713 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:23:13,714 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:23:13,715 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:23:13,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:23:13,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:23:13,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:23:13,721 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:23:13,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:23:13,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:23:13,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:23:13,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:23:13,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:23:13,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:23:13,730 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:23:13,731 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:23:13,732 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:23:13,733 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:23:13,734 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:23:13,734 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:23:13,735 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:23:13,735 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:23:13,736 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:23:13,737 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:23:13,737 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:23:13,738 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:23:13,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:23:13,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:23:13,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:23:13,759 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:23:13,760 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:23:13,760 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:23:13,760 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:23:13,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:23:13,761 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:23:13,761 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:23:13,761 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:23:13,761 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:23:13,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:23:13,762 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:23:13,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:23:13,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:23:13,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:23:13,763 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:23:13,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:23:13,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:23:13,764 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:23:13,764 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:23:13,764 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:23:13,764 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:23:13,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:23:13,765 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> 63303d7ef35f153a8bd897bdcb496a54fed422c9 [2018-11-28 18:23:13,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:23:13,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:23:13,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:23:13,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:23:13,825 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:23:13,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/heavy_true-unreach-call.c [2018-11-28 18:23:13,892 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc0e4e1f3/ee75c623c1764f659132e633c7665897/FLAGf3d0f196b [2018-11-28 18:23:14,378 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:23:14,379 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/heavy_true-unreach-call.c [2018-11-28 18:23:14,386 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc0e4e1f3/ee75c623c1764f659132e633c7665897/FLAGf3d0f196b [2018-11-28 18:23:14,738 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc0e4e1f3/ee75c623c1764f659132e633c7665897 [2018-11-28 18:23:14,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:23:14,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:23:14,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:23:14,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:23:14,748 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:23:14,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:23:14" (1/1) ... [2018-11-28 18:23:14,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133e4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:14, skipping insertion in model container [2018-11-28 18:23:14,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:23:14" (1/1) ... [2018-11-28 18:23:14,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:23:14,781 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:23:15,000 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:23:23,497 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:23:23,518 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:23:23,592 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:23:23,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23 WrapperNode [2018-11-28 18:23:23,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:23:23,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:23:23,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:23:23,594 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:23:23,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:23:23,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:23:23,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:23:23,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:23:23,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... [2018-11-28 18:23:23,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:23:23,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:23:23,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:23:23,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:23:23,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:23:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:23:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:23:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:23:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-28 18:23:24,156 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:23:24,157 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 18:23:24,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:23:24 BoogieIcfgContainer [2018-11-28 18:23:24,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:23:24,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:23:24,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:23:24,163 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:23:24,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:23:14" (1/3) ... [2018-11-28 18:23:24,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576ab946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:23:24, skipping insertion in model container [2018-11-28 18:23:24,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:23:23" (2/3) ... [2018-11-28 18:23:24,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576ab946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:23:24, skipping insertion in model container [2018-11-28 18:23:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:23:24" (3/3) ... [2018-11-28 18:23:24,166 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy_true-unreach-call.c [2018-11-28 18:23:24,177 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:23:24,186 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:23:24,204 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:23:24,238 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:23:24,239 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:23:24,239 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:23:24,239 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:23:24,239 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:23:24,239 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:23:24,239 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:23:24,240 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:23:24,240 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:23:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:23:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 18:23:24,263 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:24,264 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:24,267 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:24,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:24,272 INFO L82 PathProgramCache]: Analyzing trace with hash 242978043, now seen corresponding path program 1 times [2018-11-28 18:23:24,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:24,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:24,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:24,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:23:24,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:23:24,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:23:24,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:23:24,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:23:24,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:23:24,431 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-28 18:23:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:24,449 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2018-11-28 18:23:24,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:23:24,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-28 18:23:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:24,460 INFO L225 Difference]: With dead ends: 32 [2018-11-28 18:23:24,460 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:23:24,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:23:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:23:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:23:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:23:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-11-28 18:23:24,500 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2018-11-28 18:23:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:24,500 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-11-28 18:23:24,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:23:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-11-28 18:23:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 18:23:24,501 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:24,502 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:24,502 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:24,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:24,503 INFO L82 PathProgramCache]: Analyzing trace with hash 242949213, now seen corresponding path program 1 times [2018-11-28 18:23:24,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:24,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:24,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:24,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:23:24,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:23:24,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:23:24,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:23:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:23:24,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:23:24,624 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-11-28 18:23:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:24,675 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2018-11-28 18:23:24,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:23:24,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 18:23:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:24,677 INFO L225 Difference]: With dead ends: 24 [2018-11-28 18:23:24,677 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 18:23:24,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:23:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 18:23:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-11-28 18:23:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 18:23:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-28 18:23:24,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2018-11-28 18:23:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:24,684 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-28 18:23:24,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:23:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-28 18:23:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:23:24,684 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:24,685 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:24,685 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:24,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:24,685 INFO L82 PathProgramCache]: Analyzing trace with hash 713101374, now seen corresponding path program 1 times [2018-11-28 18:23:24,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:24,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:24,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:24,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:23:24,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:23:24,838 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:23:24,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:24,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:23:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:23:24,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:23:24,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-11-28 18:23:24,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:23:24,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:23:24,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:23:24,955 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-11-28 18:23:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:25,193 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-11-28 18:23:25,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:23:25,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-28 18:23:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:25,197 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:23:25,198 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:23:25,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:23:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:23:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-11-28 18:23:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 18:23:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 18:23:25,206 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2018-11-28 18:23:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:25,206 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 18:23:25,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:23:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-28 18:23:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:23:25,208 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:25,208 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:25,208 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:25,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1308348629, now seen corresponding path program 1 times [2018-11-28 18:23:25,210 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:25,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:25,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:25,457 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-11-28 18:23:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:23:25,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:23:25,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:23:25,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:25,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:23:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:23:25,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:23:25,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-11-28 18:23:25,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:23:25,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:23:25,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:23:25,581 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2018-11-28 18:23:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:26,121 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2018-11-28 18:23:26,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 18:23:26,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-28 18:23:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:26,124 INFO L225 Difference]: With dead ends: 66 [2018-11-28 18:23:26,124 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 18:23:26,125 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:23:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 18:23:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-11-28 18:23:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:23:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-28 18:23:26,137 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-11-28 18:23:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:26,138 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-28 18:23:26,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:23:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-28 18:23:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:23:26,140 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:26,140 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:26,140 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:26,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1611011581, now seen corresponding path program 1 times [2018-11-28 18:23:26,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:26,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:26,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:26,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:26,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:26,751 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-11-28 18:23:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-28 18:23:26,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:23:26,756 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:23:26,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:26,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:23:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-28 18:23:27,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:23:27,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-11-28 18:23:27,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:23:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:23:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:23:27,067 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2018-11-28 18:23:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:27,168 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2018-11-28 18:23:27,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:23:27,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-11-28 18:23:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:27,172 INFO L225 Difference]: With dead ends: 73 [2018-11-28 18:23:27,173 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 18:23:27,173 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:23:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 18:23:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 18:23:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:23:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-11-28 18:23:27,184 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 35 [2018-11-28 18:23:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:27,185 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-11-28 18:23:27,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:23:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-11-28 18:23:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-28 18:23:27,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:23:27,188 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:23:27,188 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:23:27,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:23:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash 351043197, now seen corresponding path program 2 times [2018-11-28 18:23:27,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:23:27,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:23:27,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:27,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:23:27,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:23:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:23:27,752 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-11-28 18:23:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-28 18:23:27,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:23:27,759 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:23:27,778 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:23:27,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 18:23:27,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:23:27,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:23:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-28 18:23:27,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:23:27,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-28 18:23:27,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:23:27,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:23:27,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:23:27,982 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2018-11-28 18:23:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:23:28,339 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-11-28 18:23:28,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:23:28,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-11-28 18:23:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:23:28,347 INFO L225 Difference]: With dead ends: 85 [2018-11-28 18:23:28,347 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:23:28,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:23:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:23:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:23:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:23:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:23:28,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-11-28 18:23:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:23:28,352 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:23:28,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:23:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:23:28,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:23:28,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:23:28,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:23:28,414 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:23:28,415 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:23:28,415 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 5 21) no Hoare annotation was computed. [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 5 21) no Hoare annotation was computed. [2018-11-28 18:23:28,415 INFO L448 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-28 18:23:28,416 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (= main_~a~0 1) [2018-11-28 18:23:28,416 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 5 21) the Hoare annotation is: true [2018-11-28 18:23:28,416 INFO L444 ceAbstractionStarter]: At program point L16(lines 6 21) the Hoare annotation is: false [2018-11-28 18:23:28,416 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2018-11-28 18:23:28,417 INFO L448 ceAbstractionStarter]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2018-11-28 18:23:28,417 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 13) the Hoare annotation is: (= main_~a~0 1) [2018-11-28 18:23:28,417 INFO L448 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2018-11-28 18:23:28,417 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: (= main_~a~0 1) [2018-11-28 18:23:28,417 INFO L448 ceAbstractionStarter]: For program point L10-4(lines 6 21) no Hoare annotation was computed. [2018-11-28 18:23:28,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:23:28 BoogieIcfgContainer [2018-11-28 18:23:28,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:23:28,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:23:28,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:23:28,433 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:23:28,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:23:24" (3/4) ... [2018-11-28 18:23:28,439 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:23:28,447 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:23:28,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:23:28,453 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-28 18:23:28,453 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 18:23:28,453 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 18:23:28,454 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:23:28,505 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:23:28,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:23:28,507 INFO L168 Benchmark]: Toolchain (without parser) took 13764.66 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 951.3 MB in the beginning and 979.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 11.5 GB. [2018-11-28 18:23:28,509 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:23:28,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 8849.31 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 951.3 MB in the beginning and 1.4 GB in the end (delta: -422.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 11.5 GB. [2018-11-28 18:23:28,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 3.0 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:23:28,510 INFO L168 Benchmark]: Boogie Preprocessor took 58.44 ms. Allocated memory is still 3.0 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:23:28,512 INFO L168 Benchmark]: RCFGBuilder took 475.52 ms. Allocated memory is still 3.0 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:23:28,513 INFO L168 Benchmark]: TraceAbstraction took 4273.51 ms. Allocated memory is still 3.0 GB. Free memory was 1.3 GB in the beginning and 979.0 MB in the end (delta: 331.0 MB). Peak memory consumption was 331.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:23:28,514 INFO L168 Benchmark]: Witness Printer took 73.02 ms. Allocated memory is still 3.0 GB. Free memory is still 979.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:23:28,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 8849.31 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 951.3 MB in the beginning and 1.4 GB in the end (delta: -422.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 3.0 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.44 ms. Allocated memory is still 3.0 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 475.52 ms. Allocated memory is still 3.0 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4273.51 ms. Allocated memory is still 3.0 GB. Free memory was 1.3 GB in the beginning and 979.0 MB in the end (delta: 331.0 MB). Peak memory consumption was 331.0 MB. Max. memory is 11.5 GB. * Witness Printer took 73.02 ms. Allocated memory is still 3.0 GB. Free memory is still 979.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 4.1s OverallTime, 6 OverallIterations, 8 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 98 SDslu, 145 SDs, 0 SdLazy, 108 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 14 HoareAnnotationTreeSize, 8 FomulaSimplifications, 521 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 240 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 12918 SizeOfPredicates, 7 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 374/382 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...