/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/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:01:26,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:01:26,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:01:26,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:01:26,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:01:26,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:01:26,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:01:26,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:01:26,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:01:26,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:01:26,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:01:26,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:01:26,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:01:26,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:01:26,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:01:26,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:01:26,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:01:26,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:01:26,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:01:26,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:01:26,274 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 23:01:26,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:01:26,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:01:26,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:01:26,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:01:26,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:01:26,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:01:26,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:01:26,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:01:26,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:01:26,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:01:26,293 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:01:26,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:01:26,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:01:26,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:26,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:01:26,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:01:26,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:01:26,294 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 23:01:26,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:01:26,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:01:26,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:01:26,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:01:26,598 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:01:26,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-08-22 23:01:26,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2005ceeaa/483006dd13a24e88a0f908ca61835484/FLAG0f47e5255 [2020-08-22 23:01:27,183 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:01:27,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-08-22 23:01:27,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2005ceeaa/483006dd13a24e88a0f908ca61835484/FLAG0f47e5255 [2020-08-22 23:01:27,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2005ceeaa/483006dd13a24e88a0f908ca61835484 [2020-08-22 23:01:27,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:01:27,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:01:27,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:27,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:01:27,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:01:27,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4cc786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27, skipping insertion in model container [2020-08-22 23:01:27,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:01:27,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:01:27,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:27,833 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:01:27,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:27,859 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:01:27,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27 WrapperNode [2020-08-22 23:01:27,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:27,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:01:27,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:01:27,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:01:27,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (1/1) ... [2020-08-22 23:01:27,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:01:27,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:01:27,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:01:27,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:01:27,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (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 23:01:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:01:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:01:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:01:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:01:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:01:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:01:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:01:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:01:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:01:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:01:28,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:01:28,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:01:28,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:28 BoogieIcfgContainer [2020-08-22 23:01:28,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:01:28,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:01:28,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:01:28,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:01:28,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:27" (1/3) ... [2020-08-22 23:01:28,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:28, skipping insertion in model container [2020-08-22 23:01:28,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:27" (2/3) ... [2020-08-22 23:01:28,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:28, skipping insertion in model container [2020-08-22 23:01:28,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:28" (3/3) ... [2020-08-22 23:01:28,300 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-08-22 23:01:28,333 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:01:28,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:01:28,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:01:28,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:01:28,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:01:28,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:01:28,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:01:28,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:01:28,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:01:28,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:01:28,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:01:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 23:01:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 23:01:28,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:28,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:28,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2078788022, now seen corresponding path program 1 times [2020-08-22 23:01:28,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:28,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576986040] [2020-08-22 23:01:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:28,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576986040] [2020-08-22 23:01:28,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:28,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:01:28,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147531379] [2020-08-22 23:01:28,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:01:28,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:28,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:01:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:01:28,662 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-22 23:01:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:28,764 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-22 23:01:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:01:28,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 23:01:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:28,775 INFO L225 Difference]: With dead ends: 48 [2020-08-22 23:01:28,775 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 23:01:28,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 23:01:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 23:01:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-22 23:01:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 23:01:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-08-22 23:01:28,817 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-08-22 23:01:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:28,818 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-08-22 23:01:28,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:01:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-08-22 23:01:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 23:01:28,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:28,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:28,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:01:28,821 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash 493290783, now seen corresponding path program 1 times [2020-08-22 23:01:28,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:28,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202949798] [2020-08-22 23:01:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:29,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202949798] [2020-08-22 23:01:29,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:29,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 23:01:29,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760630350] [2020-08-22 23:01:29,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 23:01:29,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:29,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 23:01:29,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 23:01:29,205 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 11 states. [2020-08-22 23:01:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:29,509 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-22 23:01:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:01:29,511 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-08-22 23:01:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:29,513 INFO L225 Difference]: With dead ends: 33 [2020-08-22 23:01:29,513 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 23:01:29,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-08-22 23:01:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 23:01:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-22 23:01:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 23:01:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-22 23:01:29,540 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-08-22 23:01:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:29,541 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-22 23:01:29,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 23:01:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-22 23:01:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 23:01:29,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:29,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:29,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:01:29,558 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash -194935978, now seen corresponding path program 2 times [2020-08-22 23:01:29,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:29,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131429940] [2020-08-22 23:01:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 23:01:29,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131429940] [2020-08-22 23:01:29,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:29,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 23:01:29,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094409946] [2020-08-22 23:01:29,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 23:01:29,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:29,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 23:01:29,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 23:01:29,916 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-08-22 23:01:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:30,221 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-22 23:01:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 23:01:30,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-08-22 23:01:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:30,222 INFO L225 Difference]: With dead ends: 27 [2020-08-22 23:01:30,222 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:01:30,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-08-22 23:01:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:01:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:01:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:01:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:01:30,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-08-22 23:01:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:30,225 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:01:30,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 23:01:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:01:30,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:01:30,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:01:30,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:01:30,486 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,487 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,487 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,487 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,487 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,487 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:01:30,488 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2020-08-22 23:01:30,488 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~n~0)))) [2020-08-22 23:01:30,488 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= main_~sn~0 0) [2020-08-22 23:01:30,488 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2020-08-22 23:01:30,489 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (= main_~sn~0 0) [2020-08-22 23:01:30,489 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-08-22 23:01:30,490 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~sn~0 0) [2020-08-22 23:01:30,490 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-08-22 23:01:30,490 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-08-22 23:01:30,491 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) [2020-08-22 23:01:30,491 INFO L271 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-08-22 23:01:30,492 INFO L264 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0)) (.cse0 (* 2 |main_#t~post1|))) (and (<= main_~sn~0 .cse0) (<= .cse1 main_~sn~0) (<= main_~sn~0 .cse1) (<= .cse0 main_~sn~0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) [2020-08-22 23:01:30,492 INFO L271 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-08-22 23:01:30,492 INFO L264 CegarLoopResult]: At program point L14-5(line 14) the Hoare annotation is: (let ((.cse0 (* 2 |main_#t~post1|)) (.cse2 (+ main_~sn~0 2)) (.cse1 (* 2 main_~i~0))) (and (<= main_~sn~0 .cse0) (<= .cse1 .cse2) (<= .cse0 main_~sn~0) (<= .cse2 .cse1) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) [2020-08-22 23:01:30,493 INFO L264 CegarLoopResult]: At program point L14-6(lines 14 16) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~sn~0 2))) (let ((.cse0 (<= .cse3 .cse2)) (.cse1 (<= .cse2 .cse3))) (or (and (= main_~sn~0 0) .cse0 .cse1) (and .cse0 .cse1 (< main_~sn~0 (+ (* 2 main_~n~0) 1)))))) [2020-08-22 23:01:30,494 INFO L264 CegarLoopResult]: At program point L14-7(lines 14 16) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2020-08-22 23:01:30,494 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-22 23:01:30,494 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 4 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:01:30,494 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:01:30,495 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:01:30,495 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:01:30,495 INFO L264 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:01:30,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:01:30 BoogieIcfgContainer [2020-08-22 23:01:30,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:01:30,534 INFO L168 Benchmark]: Toolchain (without parser) took 2916.22 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 103.0 MB in the beginning and 105.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,536 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.15 ms. Allocated memory is still 138.9 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,539 INFO L168 Benchmark]: Boogie Preprocessor took 116.04 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 181.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,541 INFO L168 Benchmark]: RCFGBuilder took 287.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,548 INFO L168 Benchmark]: TraceAbstraction took 2250.43 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 105.4 MB in the end (delta: 62.9 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:30,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.15 ms. Allocated memory is still 138.9 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.04 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 181.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2250.43 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 105.4 MB in the end (delta: 62.9 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((sn == 0 && 2 * i <= sn + 2) && sn + 2 <= 2 * i) || ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 23 SDslu, 261 SDs, 0 SdLazy, 177 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 46 PreInvPairs, 67 NumberOfFragments, 211 HoareAnnotationTreeSize, 46 FomulaSimplifications, 229 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 9040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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...