./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 13:54:46,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 13:54:46,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 13:54:46,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 13:54:46,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 13:54:46,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 13:54:46,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 13:54:46,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 13:54:46,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 13:54:46,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 13:54:46,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 13:54:46,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 13:54:46,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 13:54:46,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 13:54:46,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 13:54:46,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 13:54:46,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 13:54:46,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 13:54:46,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 13:54:46,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 13:54:46,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 13:54:46,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 13:54:46,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 13:54:46,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 13:54:46,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 13:54:46,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 13:54:46,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 13:54:46,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 13:54:46,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 13:54:46,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 13:54:46,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 13:54:46,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 13:54:46,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 13:54:46,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 13:54:46,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 13:54:46,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 13:54:46,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 13:54:46,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 13:54:46,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 13:54:46,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 13:54:46,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 13:54:46,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 13:54:46,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 13:54:46,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 13:54:46,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 13:54:46,564 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 13:54:46,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 13:54:46,564 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 13:54:46,565 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 13:54:46,565 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 13:54:46,566 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 13:54:46,566 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 13:54:46,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 13:54:46,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 13:54:46,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 13:54:46,567 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 13:54:46,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 13:54:46,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:54:46,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 13:54:46,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 13:54:46,570 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2020-12-09 13:54:46,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 13:54:46,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 13:54:46,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 13:54:46,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 13:54:46,756 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 13:54:46,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-12-09 13:54:46,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/data/3131527e6/e7e975f12783472ea9963dc42c99b591/FLAG3283fc36f [2020-12-09 13:54:47,203 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 13:54:47,204 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-12-09 13:54:47,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/data/3131527e6/e7e975f12783472ea9963dc42c99b591/FLAG3283fc36f [2020-12-09 13:54:47,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/data/3131527e6/e7e975f12783472ea9963dc42c99b591 [2020-12-09 13:54:47,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 13:54:47,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 13:54:47,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:47,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 13:54:47,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 13:54:47,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1d13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47, skipping insertion in model container [2020-12-09 13:54:47,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 13:54:47,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 13:54:47,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2020-12-09 13:54:47,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:47,352 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 13:54:47,360 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2020-12-09 13:54:47,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:47,372 INFO L208 MainTranslator]: Completed translation [2020-12-09 13:54:47,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47 WrapperNode [2020-12-09 13:54:47,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:47,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:47,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 13:54:47,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 13:54:47,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:47,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 13:54:47,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 13:54:47,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 13:54:47,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... [2020-12-09 13:54:47,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 13:54:47,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 13:54:47,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 13:54:47,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 13:54:47,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/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 [2020-12-09 13:54:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 13:54:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 13:54:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 13:54:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 13:54:47,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 13:54:47,636 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 13:54:47,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:47 BoogieIcfgContainer [2020-12-09 13:54:47,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 13:54:47,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 13:54:47,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 13:54:47,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 13:54:47,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:54:47" (1/3) ... [2020-12-09 13:54:47,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a504fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:47, skipping insertion in model container [2020-12-09 13:54:47,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:47" (2/3) ... [2020-12-09 13:54:47,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a504fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:47, skipping insertion in model container [2020-12-09 13:54:47,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:47" (3/3) ... [2020-12-09 13:54:47,646 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2020-12-09 13:54:47,659 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 13:54:47,662 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 13:54:47,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 13:54:47,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 13:54:47,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 13:54:47,695 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 13:54:47,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 13:54:47,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 13:54:47,695 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 13:54:47,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 13:54:47,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 13:54:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 13:54:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 13:54:47,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:47,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 13:54:47,713 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2020-12-09 13:54:47,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:47,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934916054] [2020-12-09 13:54:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934916054] [2020-12-09 13:54:47,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:47,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050393928] [2020-12-09 13:54:47,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:47,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:47,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:47,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:47,879 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-12-09 13:54:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:47,923 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-09 13:54:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:54:47,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 13:54:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:47,932 INFO L225 Difference]: With dead ends: 20 [2020-12-09 13:54:47,932 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 13:54:47,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 13:54:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-12-09 13:54:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 13:54:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 13:54:47,960 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-12-09 13:54:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:47,960 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 13:54:47,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 13:54:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 13:54:47,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:47,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 13:54:47,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 13:54:47,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:47,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:47,962 INFO L82 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2020-12-09 13:54:47,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:47,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827796180] [2020-12-09 13:54:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827796180] [2020-12-09 13:54:48,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:48,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:48,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612062504] [2020-12-09 13:54:48,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:48,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:48,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:48,004 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-12-09 13:54:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:48,022 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-12-09 13:54:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:48,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 13:54:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:48,023 INFO L225 Difference]: With dead ends: 13 [2020-12-09 13:54:48,023 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 13:54:48,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 13:54:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 13:54:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 13:54:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 13:54:48,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-12-09 13:54:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:48,027 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 13:54:48,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 13:54:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 13:54:48,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:48,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 13:54:48,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 13:54:48,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2020-12-09 13:54:48,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:48,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930272586] [2020-12-09 13:54:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930272586] [2020-12-09 13:54:48,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:48,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:54:48,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817213367] [2020-12-09 13:54:48,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:48,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:48,071 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-12-09 13:54:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:48,090 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-09 13:54:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:48,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 13:54:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:48,091 INFO L225 Difference]: With dead ends: 12 [2020-12-09 13:54:48,091 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 13:54:48,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 13:54:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 13:54:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 13:54:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 13:54:48,094 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-12-09 13:54:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:48,095 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 13:54:48,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 13:54:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 13:54:48,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:48,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:48,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 13:54:48,096 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2020-12-09 13:54:48,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:48,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449999808] [2020-12-09 13:54:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449999808] [2020-12-09 13:54:48,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:48,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:48,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409138147] [2020-12-09 13:54:48,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:48,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:48,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:48,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:48,134 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-12-09 13:54:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:48,151 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-12-09 13:54:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 13:54:48,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 13:54:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:48,152 INFO L225 Difference]: With dead ends: 15 [2020-12-09 13:54:48,152 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 13:54:48,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 13:54:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 13:54:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 13:54:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-09 13:54:48,156 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2020-12-09 13:54:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:48,156 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-09 13:54:48,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-09 13:54:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 13:54:48,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:48,157 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:48,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 13:54:48,157 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2020-12-09 13:54:48,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:48,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065506847] [2020-12-09 13:54:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065506847] [2020-12-09 13:54:48,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542849076] [2020-12-09 13:54:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:48,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 13:54:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:48,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [511334398] [2020-12-09 13:54:48,329 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 13:54:48,329 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 13:54:48,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 13:54:48,336 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 13:54:48,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 13:54:48,784 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 13:54:49,167 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-12-09 13:54:49,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 13:54:49,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 13:54:49,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 13:54:49,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385851029] [2020-12-09 13:54:49,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 13:54:49,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 13:54:49,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-12-09 13:54:49,361 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2020-12-09 13:54:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:49,429 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 13:54:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 13:54:49,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-12-09 13:54:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:49,430 INFO L225 Difference]: With dead ends: 30 [2020-12-09 13:54:49,430 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 13:54:49,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-12-09 13:54:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 13:54:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-12-09 13:54:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 13:54:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-09 13:54:49,433 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2020-12-09 13:54:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:49,434 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-09 13:54:49,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 13:54:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-09 13:54:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:54:49,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:49,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2020-12-09 13:54:49,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:49,636 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:49,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1317414976, now seen corresponding path program 1 times [2020-12-09 13:54:49,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:49,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584471080] [2020-12-09 13:54:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:49,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584471080] [2020-12-09 13:54:49,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544735278] [2020-12-09 13:54:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:49,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 13:54:49,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:49,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:49,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1047359092] [2020-12-09 13:54:49,967 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 13:54:49,967 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 13:54:49,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 13:54:49,967 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 13:54:49,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 13:54:50,197 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 13:54:50,579 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-12-09 13:54:50,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 13:54:50,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 13:54:50,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2020-12-09 13:54:50,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553702810] [2020-12-09 13:54:50,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 13:54:50,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:50,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 13:54:50,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-12-09 13:54:50,781 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 16 states. [2020-12-09 13:54:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:50,991 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-09 13:54:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 13:54:50,991 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-12-09 13:54:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:50,992 INFO L225 Difference]: With dead ends: 36 [2020-12-09 13:54:50,992 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 13:54:50,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-12-09 13:54:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 13:54:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-12-09 13:54:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 13:54:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-12-09 13:54:50,996 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 12 [2020-12-09 13:54:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:50,996 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-12-09 13:54:50,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 13:54:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-12-09 13:54:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 13:54:50,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:50,997 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1] [2020-12-09 13:54:51,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:51,199 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:51,200 INFO L82 PathProgramCache]: Analyzing trace with hash 291495106, now seen corresponding path program 2 times [2020-12-09 13:54:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103446676] [2020-12-09 13:54:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:51,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103446676] [2020-12-09 13:54:51,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461912595] [2020-12-09 13:54:51,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:51,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 13:54:51,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 13:54:51,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 13:54:51,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 13:54:51,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 13:54:51,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533439318] [2020-12-09 13:54:51,390 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 13:54:51,390 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 13:54:51,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 13:54:51,391 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 13:54:51,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 13:54:51,594 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 13:54:51,932 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-12-09 13:54:52,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 13:54:52,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 13:54:52,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2020-12-09 13:54:52,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641514523] [2020-12-09 13:54:52,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 13:54:52,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 13:54:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-12-09 13:54:52,138 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 14 states. [2020-12-09 13:54:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:52,271 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-12-09 13:54:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 13:54:52,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-12-09 13:54:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:52,272 INFO L225 Difference]: With dead ends: 34 [2020-12-09 13:54:52,272 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 13:54:52,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2020-12-09 13:54:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 13:54:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 13:54:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 13:54:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-12-09 13:54:52,277 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2020-12-09 13:54:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:52,277 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-12-09 13:54:52,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 13:54:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-12-09 13:54:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 13:54:52,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:52,278 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1] [2020-12-09 13:54:52,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-09 13:54:52,480 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 13:54:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash -719108544, now seen corresponding path program 2 times [2020-12-09 13:54:52,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:52,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810633649] [2020-12-09 13:54:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-09 13:54:52,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810633649] [2020-12-09 13:54:52,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110683996] [2020-12-09 13:54:52,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:52,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 13:54:52,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 13:54:52,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 13:54:52,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 13:54:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:52,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 13:54:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 13:54:52,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662280071] [2020-12-09 13:54:52,993 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 13:54:52,993 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 13:54:52,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 13:54:52,993 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 13:54:52,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 13:54:53,128 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 13:54:53,512 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-12-09 13:54:53,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 13:54:53,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 13:54:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 32 [2020-12-09 13:54:53,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482721121] [2020-12-09 13:54:53,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-09 13:54:53,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-09 13:54:53,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 13:54:53,838 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2020-12-09 13:54:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:53,979 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-12-09 13:54:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 13:54:53,979 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2020-12-09 13:54:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:53,980 INFO L225 Difference]: With dead ends: 33 [2020-12-09 13:54:53,980 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 13:54:53,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 67 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2020-12-09 13:54:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 13:54:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 13:54:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 13:54:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 13:54:53,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-09 13:54:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:53,981 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 13:54:53,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-09 13:54:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 13:54:53,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 13:54:54,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 13:54:54,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 13:54:54,250 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,250 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 13:54:54,250 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,250 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,250 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 13:54:54,251 INFO L265 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-12-09 13:54:54,252 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~k~0)) [2020-12-09 13:54:54,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:54:54 BoogieIcfgContainer [2020-12-09 13:54:54,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 13:54:54,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 13:54:54,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 13:54:54,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 13:54:54,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:47" (3/4) ... [2020-12-09 13:54:54,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 13:54:54,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-09 13:54:54,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 13:54:54,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:54:54,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:54:54,300 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_02932885-d942-45b9-99ce-15821e656e0d/bin/utaipan/witness.graphml [2020-12-09 13:54:54,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 13:54:54,301 INFO L168 Benchmark]: Toolchain (without parser) took 7080.40 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 71.6 MB in the beginning and 109.9 MB in the end (delta: -38.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:54,301 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 98.6 MB. Free memory is still 54.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:54,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.25 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 76.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:54,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.19 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 75.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:54,302 INFO L168 Benchmark]: Boogie Preprocessor took 13.48 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:54,302 INFO L168 Benchmark]: RCFGBuilder took 228.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 58.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:54,302 INFO L168 Benchmark]: TraceAbstraction took 6625.23 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 58.1 MB in the beginning and 112.0 MB in the end (delta: -54.0 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:54,303 INFO L168 Benchmark]: Witness Printer took 34.87 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 109.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:54,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 98.6 MB. Free memory is still 54.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 151.25 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 76.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.19 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 75.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.48 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 228.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 58.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6625.23 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 58.1 MB in the beginning and 112.0 MB in the end (delta: -54.0 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 34.87 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 109.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((0 <= j && n <= k + j) && n <= 2147483647) && k <= 2147483647) && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 128 SDslu, 101 SDs, 0 SdLazy, 265 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 159 SyntacticMatches, 18 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 19 HoareAnnotationTreeSize, 2 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 176 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 22555 SizeOfPredicates, 25 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 123/360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...