/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:13:18,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:13:18,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:13:18,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:13:18,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:13:18,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:13:18,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:13:18,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:13:18,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:13:18,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:13:18,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:13:18,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:13:18,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:13:18,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:13:18,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:13:18,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:13:18,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:13:18,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:13:18,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:13:18,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:13:18,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:13:18,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:13:18,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:13:18,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:13:18,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:13:18,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:13:18,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:13:18,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:13:18,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:13:18,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:13:18,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:13:18,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:13:18,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:13:18,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:13:18,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:13:18,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:13:18,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:13:18,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:13:18,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:13:18,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:13:18,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:13:18,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:13:18,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:13:18,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:13:18,826 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:13:18,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:13:18,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:13:18,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:13:18,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:13:18,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:13:18,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:13:18,828 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:13:19,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:13:19,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:13:19,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:13:19,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:13:19,276 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:13:19,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-04 16:13:19,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27ff9349/2cd0a2478ebc494ca050b8b1b33cab53/FLAG5037e705e [2020-09-04 16:13:19,914 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:13:19,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-04 16:13:19,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27ff9349/2cd0a2478ebc494ca050b8b1b33cab53/FLAG5037e705e [2020-09-04 16:13:20,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27ff9349/2cd0a2478ebc494ca050b8b1b33cab53 [2020-09-04 16:13:20,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:13:20,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:13:20,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:13:20,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:13:20,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:13:20,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fa6231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20, skipping insertion in model container [2020-09-04 16:13:20,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:13:20,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:13:20,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:13:20,527 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:13:20,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:13:20,564 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:13:20,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20 WrapperNode [2020-09-04 16:13:20,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:13:20,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:13:20,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:13:20,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:13:20,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... [2020-09-04 16:13:20,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:13:20,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:13:20,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:13:20,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:13:20,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:13:20,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:13:20,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:13:20,746 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-04 16:13:20,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:13:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:13:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:13:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-04 16:13:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:13:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:13:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:13:20,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:13:20,946 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:13:20,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:13:20 BoogieIcfgContainer [2020-09-04 16:13:20,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:13:20,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:13:20,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:13:20,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:13:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:13:20" (1/3) ... [2020-09-04 16:13:20,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:13:20, skipping insertion in model container [2020-09-04 16:13:20,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:13:20" (2/3) ... [2020-09-04 16:13:20,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:13:20, skipping insertion in model container [2020-09-04 16:13:20,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:13:20" (3/3) ... [2020-09-04 16:13:20,967 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-09-04 16:13:20,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:13:20,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:13:21,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:13:21,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:13:21,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:13:21,031 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:13:21,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:13:21,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:13:21,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:13:21,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:13:21,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:13:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-04 16:13:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 16:13:21,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:21,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:13:21,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-04 16:13:21,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:21,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855889438] [2020-09-04 16:13:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:21,142 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:13:21,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855889438] [2020-09-04 16:13:21,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:21,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:13:21,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182527783] [2020-09-04 16:13:21,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:13:21,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:21,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:13:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:13:21,440 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-04 16:13:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:21,527 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-04 16:13:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:13:21,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-04 16:13:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:21,543 INFO L225 Difference]: With dead ends: 45 [2020-09-04 16:13:21,543 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 16:13:21,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:13:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 16:13:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 16:13:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 16:13:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 16:13:21,594 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-04 16:13:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:21,595 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 16:13:21,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:13:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 16:13:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 16:13:21,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:21,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:13:21,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:13:21,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-04 16:13:21,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:21,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752182566] [2020-09-04 16:13:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:21,603 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:13:21,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752182566] [2020-09-04 16:13:21,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:21,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:13:21,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589258146] [2020-09-04 16:13:21,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:13:21,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:21,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:13:21,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:13:21,743 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-04 16:13:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:21,851 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-04 16:13:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:13:21,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-04 16:13:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:21,854 INFO L225 Difference]: With dead ends: 37 [2020-09-04 16:13:21,854 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 16:13:21,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:13:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 16:13:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-04 16:13:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 16:13:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-04 16:13:21,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-04 16:13:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:21,869 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-04 16:13:21,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:13:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-04 16:13:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 16:13:21,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:13:21,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:13:21,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:13:21,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:13:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:13:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-04 16:13:21,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:13:21,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909421684] [2020-09-04 16:13:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:13:21,876 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:13:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:13:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:13:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:22,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:13:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:13:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:13:22,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909421684] [2020-09-04 16:13:22,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:13:22,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:13:22,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309776744] [2020-09-04 16:13:22,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:13:22,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:13:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:13:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:13:22,118 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-09-04 16:13:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:13:22,251 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 16:13:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:13:22,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-04 16:13:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:13:22,252 INFO L225 Difference]: With dead ends: 31 [2020-09-04 16:13:22,253 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:13:22,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-04 16:13:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:13:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:13:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:13:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:13:22,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-09-04 16:13:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:13:22,256 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:13:22,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:13:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:13:22,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:13:22,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:13:22,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:13:22,432 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,432 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,432 INFO L264 CegarLoopResult]: At program point hanoiEXIT(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-09-04 16:13:22,432 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-09-04 16:13:22,433 INFO L264 CegarLoopResult]: At program point hanoiFINAL(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-09-04 16:13:22,433 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-04 16:13:22,433 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-09-04 16:13:22,433 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-09-04 16:13:22,434 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-09-04 16:13:22,434 INFO L271 CegarLoopResult]: At program point L19(lines 19 21) the Hoare annotation is: true [2020-09-04 16:13:22,434 INFO L264 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (or (and (= |hanoi_#t~ret0| 1) (<= 3 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret0|) (<= 7 |hanoi_#res|))) [2020-09-04 16:13:22,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,434 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,435 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:13:22,435 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-09-04 16:13:22,435 INFO L264 CegarLoopResult]: At program point L32(lines 32 36) the Hoare annotation is: (<= 1 main_~result~0) [2020-09-04 16:13:22,435 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) the Hoare annotation is: false [2020-09-04 16:13:22,435 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-04 16:13:22,436 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-09-04 16:13:22,436 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-09-04 16:13:22,436 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-09-04 16:13:22,436 INFO L264 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-09-04 16:13:22,436 INFO L271 CegarLoopResult]: At program point L28(lines 28 30) the Hoare annotation is: true [2020-09-04 16:13:22,436 INFO L264 CegarLoopResult]: At program point L31-3(line 31) the Hoare annotation is: (and (<= 1 |main_#t~ret2|) (<= 1 main_~result~0)) [2020-09-04 16:13:22,437 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-09-04 16:13:22,437 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-09-04 16:13:22,437 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 37) the Hoare annotation is: true [2020-09-04 16:13:22,437 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 37) the Hoare annotation is: true [2020-09-04 16:13:22,437 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-09-04 16:13:22,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:13:22 BoogieIcfgContainer [2020-09-04 16:13:22,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:13:22,463 INFO L168 Benchmark]: Toolchain (without parser) took 2174.29 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 104.3 MB in the beginning and 190.2 MB in the end (delta: -85.9 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,464 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,466 INFO L168 Benchmark]: Boogie Preprocessor took 101.69 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.6 MB in the beginning and 182.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,467 INFO L168 Benchmark]: RCFGBuilder took 286.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 169.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,469 INFO L168 Benchmark]: TraceAbstraction took 1504.41 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 169.8 MB in the beginning and 190.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:13:22,473 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.69 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.6 MB in the beginning and 182.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 169.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1504.41 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 169.8 MB in the beginning and 190.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 18]: Procedure Contract for hanoi Derived contract for procedure hanoi: \result == 1 || 3 <= \result - ProcedureContractResult [Line: 26]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 9 SDslu, 320 SDs, 0 SdLazy, 87 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 39 PreInvPairs, 68 NumberOfFragments, 80 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...