/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:55:32,210 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 01:55:32,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:55:32,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:55:32,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:55:32,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:55:32,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:55:32,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:55:32,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:55:32,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:55:32,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:55:32,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:55:32,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:55:32,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:55:32,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:55:32,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:55:32,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:55:32,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:55:32,332 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 [2020-08-19 01:55:32,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:55:32,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:55:32,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:55:32,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:55:32,360 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:55:32,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:55:32,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:55:32,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:55:32,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:55:32,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:55:32,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:55:32,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:55:32,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:55:32,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:55:32,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:55:32,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:55:32,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:55:32,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:55:32,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:55:32,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:55:32,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:55:32,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:55:32,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:55:32,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:55:32,365 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 -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:55:32,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:55:32,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:55:32,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:55:32,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:55:32,702 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:55:32,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-19 01:55:32,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292d3df41/0464959e39ca417f8a63eb9827af8028/FLAG79e8421f9 [2020-08-19 01:55:33,177 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:55:33,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-19 01:55:33,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292d3df41/0464959e39ca417f8a63eb9827af8028/FLAG79e8421f9 [2020-08-19 01:55:33,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292d3df41/0464959e39ca417f8a63eb9827af8028 [2020-08-19 01:55:33,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:55:33,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:55:33,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:55:33,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:55:33,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:55:33,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:33,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33, skipping insertion in model container [2020-08-19 01:55:33,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:33,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:55:33,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:55:33,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:55:33,852 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:55:33,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:55:33,885 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:55:33,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33 WrapperNode [2020-08-19 01:55:33,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:55:33,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:55:33,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:55:33,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:55:33,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:33,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:33,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:33,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:34,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:34,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:34,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (1/1) ... [2020-08-19 01:55:34,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:55:34,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:55:34,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:55:34,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:55:34,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (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 [2020-08-19 01:55:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:55:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:55:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-19 01:55:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:55:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:55:34,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:55:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-19 01:55:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:55:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:55:34,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:55:34,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:55:34,256 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:55:34,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:55:34 BoogieIcfgContainer [2020-08-19 01:55:34,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:55:34,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:55:34,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:55:34,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:55:34,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:55:33" (1/3) ... [2020-08-19 01:55:34,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2e27fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:55:34, skipping insertion in model container [2020-08-19 01:55:34,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:33" (2/3) ... [2020-08-19 01:55:34,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2e27fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:55:34, skipping insertion in model container [2020-08-19 01:55:34,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:55:34" (3/3) ... [2020-08-19 01:55:34,269 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-08-19 01:55:34,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:55:34,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:55:34,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:55:34,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:55:34,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:55:34,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:55:34,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:55:34,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:55:34,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:55:34,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:55:34,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:55:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-19 01:55:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 01:55:34,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:55:34,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:55:34,352 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:55:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:55:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-08-19 01:55:34,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:55:34,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152600978] [2020-08-19 01:55:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:55:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:55:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:55:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:55:34,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152600978] [2020-08-19 01:55:34,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:55:34,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:55:34,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903915969] [2020-08-19 01:55:34,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:55:34,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:55:34,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:55:34,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:55:34,620 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-08-19 01:55:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:55:34,675 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-19 01:55:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:55:34,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 01:55:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:55:34,689 INFO L225 Difference]: With dead ends: 33 [2020-08-19 01:55:34,690 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 01:55:34,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:55:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 01:55:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-19 01:55:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 01:55:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-08-19 01:55:34,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-08-19 01:55:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:55:34,741 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-08-19 01:55:34,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:55:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-08-19 01:55:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:55:34,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:55:34,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:55:34,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:55:34,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:55:34,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:55:34,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-08-19 01:55:34,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:55:34,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284867849] [2020-08-19 01:55:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:55:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:55:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:55:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:55:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:55:34,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284867849] [2020-08-19 01:55:34,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:55:34,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 01:55:34,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615734026] [2020-08-19 01:55:34,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:55:34,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:55:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:55:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:55:34,891 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2020-08-19 01:55:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:55:34,922 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-08-19 01:55:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:55:34,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-19 01:55:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:55:34,925 INFO L225 Difference]: With dead ends: 26 [2020-08-19 01:55:34,925 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 01:55:34,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:55:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 01:55:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-19 01:55:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 01:55:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-08-19 01:55:34,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2020-08-19 01:55:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:55:34,934 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-08-19 01:55:34,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:55:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-08-19 01:55:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 01:55:34,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:55:34,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:55:34,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:55:34,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:55:34,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:55:34,937 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2020-08-19 01:55:34,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:55:34,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167715592] [2020-08-19 01:55:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:55:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:55:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:35,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:55:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:55:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:55:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:55:35,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167715592] [2020-08-19 01:55:35,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:55:35,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:55:35,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608900612] [2020-08-19 01:55:35,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:55:35,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:55:35,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:55:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:55:35,180 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-08-19 01:55:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:55:35,217 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-08-19 01:55:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:55:35,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-08-19 01:55:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:55:35,219 INFO L225 Difference]: With dead ends: 22 [2020-08-19 01:55:35,219 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:55:35,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:55:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:55:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:55:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:55:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:55:35,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-08-19 01:55:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:55:35,222 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:55:35,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:55:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:55:35,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:55:35,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:55:35,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:55:35,250 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:55:35,251 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:55:35,251 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-08-19 01:55:35,251 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-08-19 01:55:35,251 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-08-19 01:55:35,251 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-19 01:55:35,252 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-08-19 01:55:35,252 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-08-19 01:55:35,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:55:35,252 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:55:35,252 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:55:35,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:55:35,253 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-08-19 01:55:35,253 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-08-19 01:55:35,253 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-08-19 01:55:35,253 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-08-19 01:55:35,254 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-08-19 01:55:35,254 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-08-19 01:55:35,254 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-08-19 01:55:35,254 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-08-19 01:55:35,254 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-08-19 01:55:35,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:55:35 BoogieIcfgContainer [2020-08-19 01:55:35,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:55:35,265 INFO L168 Benchmark]: Toolchain (without parser) took 1678.16 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 110.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,267 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.26 ms. Allocated memory is still 146.3 MB. Free memory was 100.6 MB in the beginning and 91.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,269 INFO L168 Benchmark]: Boogie Preprocessor took 122.48 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 182.0 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,270 INFO L168 Benchmark]: RCFGBuilder took 250.38 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,270 INFO L168 Benchmark]: TraceAbstraction took 1000.05 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 110.1 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:35,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.26 ms. Allocated memory is still 146.3 MB. Free memory was 100.6 MB in the beginning and 91.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.48 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 182.0 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.38 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1000.05 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 110.1 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 2 SDslu, 245 SDs, 0 SdLazy, 48 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 2025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 11/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...