/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:54:34,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:54:34,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:54:35,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 21:54:35,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:54:35,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:54:35,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:54:35,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:54:35,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:54:35,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:54:35,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:54:35,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:54:35,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:54:35,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:54:35,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:54:35,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:54:35,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:54:35,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:54:35,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:54:35,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:54:35,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:54:35,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:54:35,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:54:35,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:54:35,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:54:35,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:54:35,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:54:35,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:54:35,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:54:35,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:54:35,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:54:35,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:54:35,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:54:35,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:54:35,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:54:35,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:54:35,068 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:54:35,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:54:35,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:54:35,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:54:35,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:54:35,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:54:35,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:54:35,072 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 21:54:35,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:54:35,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:54:35,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:54:35,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:54:35,361 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:54:35,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-22 21:54:35,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc888033/ccfe00264e054783bd69b55401f4ec4b/FLAGde2c1315c [2020-08-22 21:54:35,833 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:54:35,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-22 21:54:35,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc888033/ccfe00264e054783bd69b55401f4ec4b/FLAGde2c1315c [2020-08-22 21:54:36,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc888033/ccfe00264e054783bd69b55401f4ec4b [2020-08-22 21:54:36,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:54:36,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:54:36,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:54:36,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:54:36,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:54:36,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54decec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36, skipping insertion in model container [2020-08-22 21:54:36,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:54:36,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:54:36,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:54:36,416 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:54:36,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:54:36,449 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:54:36,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36 WrapperNode [2020-08-22 21:54:36,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:54:36,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:54:36,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:54:36,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:54:36,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (1/1) ... [2020-08-22 21:54:36,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:54:36,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:54:36,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:54:36,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:54:36,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (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 [2020-08-22 21:54:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:54:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:54:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-22 21:54:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:54:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:54:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 21:54:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-22 21:54:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:54:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:54:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:54:36,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:54:36,803 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 21:54:36,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:54:36 BoogieIcfgContainer [2020-08-22 21:54:36,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:54:36,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:54:36,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:54:36,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:54:36,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:54:36" (1/3) ... [2020-08-22 21:54:36,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206451da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:54:36, skipping insertion in model container [2020-08-22 21:54:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:54:36" (2/3) ... [2020-08-22 21:54:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206451da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:54:36, skipping insertion in model container [2020-08-22 21:54:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:54:36" (3/3) ... [2020-08-22 21:54:36,818 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-08-22 21:54:36,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:54:36,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:54:36,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:54:36,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:54:36,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:54:36,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:54:36,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:54:36,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:54:36,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:54:36,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:54:36,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:54:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-22 21:54:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 21:54:36,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:36,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:54:36,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-08-22 21:54:36,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:36,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7914307] [2020-08-22 21:54:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:54:37,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7914307] [2020-08-22 21:54:37,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:54:37,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 21:54:37,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049856058] [2020-08-22 21:54:37,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 21:54:37,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 21:54:37,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 21:54:37,178 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-08-22 21:54:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:37,274 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-08-22 21:54:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 21:54:37,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-22 21:54:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:37,288 INFO L225 Difference]: With dead ends: 45 [2020-08-22 21:54:37,288 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 21:54:37,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 21:54:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 21:54:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 21:54:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 21:54:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-08-22 21:54:37,339 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-08-22 21:54:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:37,340 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-08-22 21:54:37,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 21:54:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-08-22 21:54:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 21:54:37,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:37,342 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] [2020-08-22 21:54:37,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:54:37,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:37,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-08-22 21:54:37,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:37,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971290023] [2020-08-22 21:54:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:54:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 21:54:37,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971290023] [2020-08-22 21:54:37,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:37,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 21:54:37,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709505991] [2020-08-22 21:54:37,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 21:54:37,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:37,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 21:54:37,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 21:54:37,480 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-08-22 21:54:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:37,555 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-08-22 21:54:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 21:54:37,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 21:54:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:37,558 INFO L225 Difference]: With dead ends: 37 [2020-08-22 21:54:37,558 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 21:54:37,560 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 [2020-08-22 21:54:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 21:54:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 21:54:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 21:54:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-08-22 21:54:37,571 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-08-22 21:54:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:37,571 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-08-22 21:54:37,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 21:54:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-08-22 21:54:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 21:54:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:54:37,574 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] [2020-08-22 21:54:37,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:54:37,575 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:54:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:54:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-08-22 21:54:37,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:54:37,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688016677] [2020-08-22 21:54:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:54:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:54:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:54:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:54:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:54:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:54:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 21:54:37,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688016677] [2020-08-22 21:54:37,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 21:54:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 21:54:37,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109083391] [2020-08-22 21:54:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 21:54:37,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:54:37,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 21:54:37,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 21:54:37,840 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-08-22 21:54:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:54:37,929 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 21:54:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 21:54:37,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-08-22 21:54:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:54:37,930 INFO L225 Difference]: With dead ends: 31 [2020-08-22 21:54:37,930 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 21:54:37,932 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 [2020-08-22 21:54:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 21:54:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 21:54:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 21:54:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 21:54:37,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-08-22 21:54:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:54:37,933 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 21:54:37,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 21:54:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 21:54:37,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 21:54:37,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 21:54:37,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 21:54:38,096 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,096 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,097 INFO L264 CegarLoopResult]: At program point hanoiEXIT(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-08-22 21:54:38,097 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-08-22 21:54:38,097 INFO L264 CegarLoopResult]: At program point hanoiFINAL(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-08-22 21:54:38,097 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-22 21:54:38,097 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-08-22 21:54:38,098 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-08-22 21:54:38,098 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-08-22 21:54:38,098 INFO L271 CegarLoopResult]: At program point L19(lines 19 21) the Hoare annotation is: true [2020-08-22 21:54:38,098 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|))) [2020-08-22 21:54:38,098 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,099 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,099 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,099 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 21:54:38,099 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-08-22 21:54:38,099 INFO L264 CegarLoopResult]: At program point L32(lines 32 36) the Hoare annotation is: (<= 1 main_~result~0) [2020-08-22 21:54:38,100 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) the Hoare annotation is: false [2020-08-22 21:54:38,100 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-08-22 21:54:38,100 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-08-22 21:54:38,100 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-08-22 21:54:38,100 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-08-22 21:54:38,101 INFO L264 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-08-22 21:54:38,101 INFO L271 CegarLoopResult]: At program point L28(lines 28 30) the Hoare annotation is: true [2020-08-22 21:54:38,101 INFO L264 CegarLoopResult]: At program point L31-3(line 31) the Hoare annotation is: (and (<= 1 |main_#t~ret2|) (<= 1 main_~result~0)) [2020-08-22 21:54:38,101 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-08-22 21:54:38,101 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-08-22 21:54:38,102 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 37) the Hoare annotation is: true [2020-08-22 21:54:38,102 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 37) the Hoare annotation is: true [2020-08-22 21:54:38,102 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-08-22 21:54:38,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:54:38 BoogieIcfgContainer [2020-08-22 21:54:38,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:54:38,124 INFO L168 Benchmark]: Toolchain (without parser) took 1908.55 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 103.7 MB in the beginning and 193.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,125 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 94.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,127 INFO L168 Benchmark]: Boogie Preprocessor took 109.46 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,128 INFO L168 Benchmark]: RCFGBuilder took 248.90 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 169.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,129 INFO L168 Benchmark]: TraceAbstraction took 1311.45 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 193.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-08-22 21:54:38,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 94.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.46 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 248.90 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 169.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1311.45 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 193.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 84.9 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, 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, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 4032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 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...