./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:32:42,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:32:42,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:32:42,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:32:42,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:32:42,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:32:42,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:32:42,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:32:42,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:32:42,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:32:42,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:32:42,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:32:42,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:32:42,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:32:42,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:32:42,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:32:42,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:32:42,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:32:42,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:32:42,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:32:42,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:32:42,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:32:42,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:32:42,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:32:42,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:32:42,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:32:42,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:32:42,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:32:42,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:32:42,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:32:42,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:32:42,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:32:42,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:32:42,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:32:42,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:32:42,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:32:42,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:32:42,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:32:42,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:32:42,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:32:42,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:32:42,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:32:42,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:32:42,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:32:42,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:32:42,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:32:42,551 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:32:42,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:32:42,552 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:32:42,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:32:42,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:32:42,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:32:42,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:32:42,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:32:42,554 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:32:42,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:32:42,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:32:42,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:32:42,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:32:42,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:32:42,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:32:42,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:32:42,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:42,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:32:42,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:32:42,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:32:42,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:32:42,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:32:42,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:32:42,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:32:42,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2020-10-19 18:32:42,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:32:42,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:32:42,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:32:42,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:32:42,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:32:42,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-10-19 18:32:42,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44863b92/1df330a921ab4b8faed287f603d2b55d/FLAGd04ef1ce8 [2020-10-19 18:32:43,398 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:32:43,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-10-19 18:32:43,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44863b92/1df330a921ab4b8faed287f603d2b55d/FLAGd04ef1ce8 [2020-10-19 18:32:43,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44863b92/1df330a921ab4b8faed287f603d2b55d [2020-10-19 18:32:43,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:32:43,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:32:43,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:43,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:32:43,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:32:43,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:43" (1/1) ... [2020-10-19 18:32:43,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1586832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:43, skipping insertion in model container [2020-10-19 18:32:43,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:43" (1/1) ... [2020-10-19 18:32:43,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:32:43,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:32:43,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:43,981 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:32:43,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:44,009 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:32:44,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44 WrapperNode [2020-10-19 18:32:44,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:44,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:44,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:32:44,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:32:44,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:44,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:32:44,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:32:44,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:32:44,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (1/1) ... [2020-10-19 18:32:44,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:32:44,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:32:44,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:32:44,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:32:44,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (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 [2020-10-19 18:32:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:32:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:32:44,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:32:44,359 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 18:32:44,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:44 BoogieIcfgContainer [2020-10-19 18:32:44,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:32:44,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:32:44,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:32:44,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:32:44,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:32:43" (1/3) ... [2020-10-19 18:32:44,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eef6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:44, skipping insertion in model container [2020-10-19 18:32:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:44" (2/3) ... [2020-10-19 18:32:44,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eef6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:44, skipping insertion in model container [2020-10-19 18:32:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:44" (3/3) ... [2020-10-19 18:32:44,369 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2020-10-19 18:32:44,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:32:44,387 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:32:44,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:32:44,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:32:44,432 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:32:44,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:32:44,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:32:44,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:32:44,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:32:44,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:32:44,433 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:32:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-19 18:32:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:32:44,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:44,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:32:44,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:44,472 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2020-10-19 18:32:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:44,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317222214] [2020-10-19 18:32:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:44,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317222214] [2020-10-19 18:32:44,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:44,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:44,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072765671] [2020-10-19 18:32:44,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:44,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,660 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-10-19 18:32:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:44,716 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-10-19 18:32:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:44,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:32:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:44,728 INFO L225 Difference]: With dead ends: 33 [2020-10-19 18:32:44,728 INFO L226 Difference]: Without dead ends: 11 [2020-10-19 18:32:44,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-19 18:32:44,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-19 18:32:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 18:32:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-19 18:32:44,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-10-19 18:32:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:44,767 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-19 18:32:44,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-19 18:32:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:32:44,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:44,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:32:44,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:32:44,769 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-10-19 18:32:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:44,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064812631] [2020-10-19 18:32:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:44,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064812631] [2020-10-19 18:32:44,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:44,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:44,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696455234] [2020-10-19 18:32:44,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:44,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,801 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-10-19 18:32:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:44,833 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-10-19 18:32:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:44,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:32:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:44,835 INFO L225 Difference]: With dead ends: 18 [2020-10-19 18:32:44,835 INFO L226 Difference]: Without dead ends: 17 [2020-10-19 18:32:44,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-19 18:32:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-10-19 18:32:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 18:32:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-19 18:32:44,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2020-10-19 18:32:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:44,842 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-19 18:32:44,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-10-19 18:32:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:32:44,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:44,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:32:44,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:32:44,844 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2020-10-19 18:32:44,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:44,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233868925] [2020-10-19 18:32:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:44,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233868925] [2020-10-19 18:32:44,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:44,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:44,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484096410] [2020-10-19 18:32:44,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:44,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:44,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:44,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,873 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-10-19 18:32:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:44,885 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-10-19 18:32:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:44,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:32:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:44,887 INFO L225 Difference]: With dead ends: 12 [2020-10-19 18:32:44,887 INFO L226 Difference]: Without dead ends: 11 [2020-10-19 18:32:44,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-19 18:32:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-19 18:32:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:32:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-19 18:32:44,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2020-10-19 18:32:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:44,892 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-19 18:32:44,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-19 18:32:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:32:44,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:44,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:32:44,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:32:44,894 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-10-19 18:32:44,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:44,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744859066] [2020-10-19 18:32:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:44,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744859066] [2020-10-19 18:32:44,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:44,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:44,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116858057] [2020-10-19 18:32:44,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:44,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:44,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:44,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,918 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-10-19 18:32:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:44,934 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-10-19 18:32:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:44,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:32:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:44,935 INFO L225 Difference]: With dead ends: 12 [2020-10-19 18:32:44,935 INFO L226 Difference]: Without dead ends: 11 [2020-10-19 18:32:44,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-19 18:32:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-19 18:32:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 18:32:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-10-19 18:32:44,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-10-19 18:32:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:44,940 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-19 18:32:44,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-10-19 18:32:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:32:44,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:44,941 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-10-19 18:32:44,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:32:44,942 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:44,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2020-10-19 18:32:44,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:44,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108074931] [2020-10-19 18:32:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:44,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108074931] [2020-10-19 18:32:44,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614469452] [2020-10-19 18:32:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:32:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:45,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:32:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:45,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:45,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:32:45,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066827232] [2020-10-19 18:32:45,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:32:45,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:45,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:32:45,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:32:45,067 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2020-10-19 18:32:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:45,123 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-10-19 18:32:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:32:45,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:32:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:45,125 INFO L225 Difference]: With dead ends: 21 [2020-10-19 18:32:45,125 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 18:32:45,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:32:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 18:32:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2020-10-19 18:32:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 18:32:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-10-19 18:32:45,134 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2020-10-19 18:32:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:45,134 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-19 18:32:45,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:32:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-10-19 18:32:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:32:45,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:45,136 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-10-19 18:32:45,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:45,348 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2000108501, now seen corresponding path program 2 times [2020-10-19 18:32:45,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:45,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730716556] [2020-10-19 18:32:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 18:32:45,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730716556] [2020-10-19 18:32:45,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387556016] [2020-10-19 18:32:45,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:32:45,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 18:32:45,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:45,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:32:45,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:45,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:45,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:32:45,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744167677] [2020-10-19 18:32:45,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:32:45,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:45,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:32:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:32:45,417 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2020-10-19 18:32:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:45,473 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-10-19 18:32:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:32:45,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:32:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:45,475 INFO L225 Difference]: With dead ends: 17 [2020-10-19 18:32:45,475 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:32:45,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:32:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:32:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:32:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:32:45,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-19 18:32:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:45,478 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:32:45,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:32:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:32:45,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:32:45,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:45,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:32:45,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:32:45,711 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 1073741823) (<= 0 ULTIMATE.start_main_~x~0)) [2020-10-19 18:32:45,711 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-10-19 18:32:45,712 INFO L277 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-10-19 18:32:45,712 INFO L274 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-10-19 18:32:45,712 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,712 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:32:45,712 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,712 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,713 INFO L277 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: true [2020-10-19 18:32:45,713 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-19 18:32:45,713 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,713 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:32:45 BoogieIcfgContainer [2020-10-19 18:32:45,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:32:45,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:32:45,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:32:45,732 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:32:45,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:44" (3/4) ... [2020-10-19 18:32:45,736 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:32:45,748 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:32:45,748 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:32:45,794 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:32:45,795 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:32:45,797 INFO L168 Benchmark]: Toolchain (without parser) took 2029.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -75.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,798 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:45,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:45,800 INFO L168 Benchmark]: Boogie Preprocessor took 78.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,801 INFO L168 Benchmark]: RCFGBuilder took 237.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,801 INFO L168 Benchmark]: TraceAbstraction took 1369.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,802 INFO L168 Benchmark]: Witness Printer took 63.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:45,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 237.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1369.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. * Witness Printer took 63.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 1073741823) && 0 <= x - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 41 SDslu, 10 SDs, 0 SdLazy, 61 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 12 HoareAnnotationTreeSize, 3 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 764 SizeOfPredicates, 1 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/18 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...