/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:53:10,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:53:10,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:53:10,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-21 14:53:10,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:53:10,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:53:10,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:53:10,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:53:10,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:53:10,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:53:10,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:53:10,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:53:10,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:53:10,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:53:10,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:53:10,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:53:10,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:53:10,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:53:10,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:53:10,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:53:10,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:53:10,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:53:10,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:53:10,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:53:10,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:53:10,991 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:53:10,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:53:10,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:53:10,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:53:10,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:53:10,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:53:10,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:53:10,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:53:10,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:53:10,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:53:10,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:53:10,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:53:10,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:53:10,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:53:10,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:53:10,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:53:10,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:53:10,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:53:10,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:53:10,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:53:10,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:53:10,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:53:10,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:53:10,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:53:10,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:53:10,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:53:11,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:53:11,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:53:11,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:53:11,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:53:11,327 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:53:11,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-08-21 14:53:11,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9331dc3e/7f8e3d561f6141378b9769af6563cec4/FLAG9e2724dfb [2020-08-21 14:53:11,868 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:53:11,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-08-21 14:53:11,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9331dc3e/7f8e3d561f6141378b9769af6563cec4/FLAG9e2724dfb [2020-08-21 14:53:12,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9331dc3e/7f8e3d561f6141378b9769af6563cec4 [2020-08-21 14:53:12,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:53:12,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:53:12,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:53:12,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:53:12,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:53:12,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20536377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12, skipping insertion in model container [2020-08-21 14:53:12,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:53:12,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:53:12,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:53:12,584 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:53:12,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:53:12,612 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:53:12,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12 WrapperNode [2020-08-21 14:53:12,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:53:12,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:53:12,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:53:12,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:53:12,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (1/1) ... [2020-08-21 14:53:12,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:53:12,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:53:12,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:53:12,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:53:12,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (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 [2020-08-21 14:53:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:53:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:53:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-21 14:53:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:53:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:53:12,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:53:12,994 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 14:53:13,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:53:13 BoogieIcfgContainer [2020-08-21 14:53:13,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:53:13,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:53:13,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:53:13,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:53:13,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:53:12" (1/3) ... [2020-08-21 14:53:13,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd37e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:53:13, skipping insertion in model container [2020-08-21 14:53:13,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:53:12" (2/3) ... [2020-08-21 14:53:13,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd37e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:53:13, skipping insertion in model container [2020-08-21 14:53:13,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:53:13" (3/3) ... [2020-08-21 14:53:13,033 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-08-21 14:53:13,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:53:13,061 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:53:13,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:53:13,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:53:13,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:53:13,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:53:13,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:53:13,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:53:13,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:53:13,119 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:53:13,119 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:53:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-08-21 14:53:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 14:53:13,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:53:13,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:53:13,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:53:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:53:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-08-21 14:53:13,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:53:13,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841717601] [2020-08-21 14:53:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:53:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:53:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:53:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:53:13,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841717601] [2020-08-21 14:53:13,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:53:13,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:53:13,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110106350] [2020-08-21 14:53:13,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:53:13,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:53:13,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:53:13,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:53:13,513 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-08-21 14:53:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:53:13,705 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-21 14:53:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:53:13,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 14:53:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:53:13,719 INFO L225 Difference]: With dead ends: 38 [2020-08-21 14:53:13,720 INFO L226 Difference]: Without dead ends: 24 [2020-08-21 14:53:13,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:53:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-21 14:53:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-21 14:53:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 14:53:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-08-21 14:53:13,777 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-08-21 14:53:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:53:13,778 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-08-21 14:53:13,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:53:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-08-21 14:53:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 14:53:13,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:53:13,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:53:13,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:53:13,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:53:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:53:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-08-21 14:53:13,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:53:13,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829863800] [2020-08-21 14:53:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:53:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:53:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:53:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:53:13,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829863800] [2020-08-21 14:53:13,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:53:13,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:53:13,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850230987] [2020-08-21 14:53:13,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:53:13,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:53:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:53:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:53:13,914 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-08-21 14:53:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:53:14,034 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-21 14:53:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:53:14,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 14:53:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:53:14,037 INFO L225 Difference]: With dead ends: 35 [2020-08-21 14:53:14,037 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 14:53:14,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:53:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 14:53:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-21 14:53:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 14:53:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-21 14:53:14,056 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-08-21 14:53:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:53:14,057 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-21 14:53:14,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:53:14,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-21 14:53:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 14:53:14,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:53:14,062 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] [2020-08-21 14:53:14,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:53:14,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:53:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:53:14,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-08-21 14:53:14,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:53:14,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471650141] [2020-08-21 14:53:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:53:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:53:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:53:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 14:53:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:53:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 14:53:14,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471650141] [2020-08-21 14:53:14,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:53:14,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 14:53:14,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930765385] [2020-08-21 14:53:14,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:53:14,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:53:14,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:53:14,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:53:14,327 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-08-21 14:53:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:53:14,452 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-08-21 14:53:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:53:14,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-08-21 14:53:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:53:14,453 INFO L225 Difference]: With dead ends: 21 [2020-08-21 14:53:14,453 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 14:53:14,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:53:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 14:53:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 14:53:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 14:53:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 14:53:14,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-08-21 14:53:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:53:14,456 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 14:53:14,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:53:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 14:53:14,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 14:53:14,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:53:14,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 14:53:14,511 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 14:53:14,511 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 14:53:14,511 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 14:53:14,511 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 14:53:14,511 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 14:53:14,512 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 14:53:14,512 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-08-21 14:53:14,512 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-08-21 14:53:14,512 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-08-21 14:53:14,512 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-08-21 14:53:14,512 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-08-21 14:53:14,513 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-21 14:53:14,513 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-08-21 14:53:14,513 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (or (<= 1 main_~n~0) (= main_~n~0 0)) [2020-08-21 14:53:14,513 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-08-21 14:53:14,514 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-08-21 14:53:14,514 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-08-21 14:53:14,514 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= |addition_#in~n| 0))) [2020-08-21 14:53:14,514 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-08-21 14:53:14,514 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-08-21 14:53:14,515 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2020-08-21 14:53:14,515 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-08-21 14:53:14,515 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-08-21 14:53:14,515 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-08-21 14:53:14,515 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-08-21 14:53:14,515 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-08-21 14:53:14,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:53:14 BoogieIcfgContainer [2020-08-21 14:53:14,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:53:14,526 INFO L168 Benchmark]: Toolchain (without parser) took 2220.87 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 103.3 MB in the beginning and 185.9 MB in the end (delta: -82.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,527 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.22 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,529 INFO L168 Benchmark]: Boogie Preprocessor took 106.62 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.2 MB in the beginning and 179.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,530 INFO L168 Benchmark]: RCFGBuilder took 280.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,531 INFO L168 Benchmark]: TraceAbstraction took 1519.07 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 166.9 MB in the beginning and 185.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:53:14,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.22 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.62 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.2 MB in the beginning and 179.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1519.07 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 166.9 MB in the beginning and 185.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 36 SDslu, 133 SDs, 0 SdLazy, 165 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 37 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 3835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...