/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:34:26,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:34:26,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:34:26,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:34:26,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:34:26,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:34:26,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:34:26,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:34:26,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:34:26,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:34:26,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:34:26,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:34:26,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:34:26,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:34:26,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:34:26,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:34:26,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:34:26,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:34:26,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:34:26,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:34:26,226 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 18:34:26,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:34:26,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:34:26,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:34:26,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:34:26,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:34:26,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:34:26,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:34:26,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:34:26,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:34:26,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:34:26,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:34:26,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:34:26,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:34:26,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:34:26,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:34:26,239 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:34:26,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:34:26,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:34:26,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:34:26,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:34:26,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:34:26,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:34:26,240 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:34:26,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:34:26,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:34:26,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:34:26,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:34:26,551 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:34:26,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-22 18:34:26,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d326b3da5/3c499d86de6c4cb0acac252172e21351/FLAG6e09089de [2020-08-22 18:34:27,056 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:34:27,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-08-22 18:34:27,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d326b3da5/3c499d86de6c4cb0acac252172e21351/FLAG6e09089de [2020-08-22 18:34:27,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d326b3da5/3c499d86de6c4cb0acac252172e21351 [2020-08-22 18:34:27,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:34:27,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:34:27,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:34:27,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:34:27,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:34:27,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d6e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27, skipping insertion in model container [2020-08-22 18:34:27,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:34:27,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:34:27,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:34:27,683 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:34:27,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:34:27,708 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:34:27,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27 WrapperNode [2020-08-22 18:34:27,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:34:27,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:34:27,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:34:27,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:34:27,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (1/1) ... [2020-08-22 18:34:27,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:34:27,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:34:27,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:34:27,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:34:27,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (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 18:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-22 18:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-22 18:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:34:28,064 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:34:28,065 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:34:28,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:34:28 BoogieIcfgContainer [2020-08-22 18:34:28,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:34:28,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:34:28,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:34:28,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:34:28,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:34:27" (1/3) ... [2020-08-22 18:34:28,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1680d786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:34:28, skipping insertion in model container [2020-08-22 18:34:28,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:34:27" (2/3) ... [2020-08-22 18:34:28,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1680d786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:34:28, skipping insertion in model container [2020-08-22 18:34:28,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:34:28" (3/3) ... [2020-08-22 18:34:28,097 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-08-22 18:34:28,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:34:28,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:34:28,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:34:28,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:34:28,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:34:28,171 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:34:28,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:34:28,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:34:28,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:34:28,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:34:28,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:34:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-22 18:34:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 18:34:28,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:34:28,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:34:28,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:34:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:34:28,202 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-08-22 18:34:28,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:34:28,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397853035] [2020-08-22 18:34:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:34:28,265 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:34:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:34:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:34:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,417 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 18:34:28,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397853035] [2020-08-22 18:34:28,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:34:28,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:34:28,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022112108] [2020-08-22 18:34:28,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:34:28,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:34:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:34:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:34:28,446 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-08-22 18:34:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:34:28,526 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-08-22 18:34:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:34:28,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-22 18:34:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:34:28,537 INFO L225 Difference]: With dead ends: 45 [2020-08-22 18:34:28,537 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 18:34:28,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:34:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 18:34:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 18:34:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 18:34:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-08-22 18:34:28,580 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-08-22 18:34:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:34:28,581 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-08-22 18:34:28,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:34:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-08-22 18:34:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 18:34:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:34:28,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:34:28,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:34:28,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:34:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:34:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-08-22 18:34:28,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:34:28,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971728866] [2020-08-22 18:34:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:34:28,623 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:34:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:34:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:34:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:34:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 18:34:28,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971728866] [2020-08-22 18:34:28,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:34:28,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:34:28,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217271088] [2020-08-22 18:34:28,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:34:28,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:34:28,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:34:28,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:34:28,750 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-08-22 18:34:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:34:28,832 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-08-22 18:34:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:34:28,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 18:34:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:34:28,835 INFO L225 Difference]: With dead ends: 37 [2020-08-22 18:34:28,835 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 18:34:28,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:34:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 18:34:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 18:34:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 18:34:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-08-22 18:34:28,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-08-22 18:34:28,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:34:28,847 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-08-22 18:34:28,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:34:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-08-22 18:34:28,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 18:34:28,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:34:28,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:34:28,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:34:28,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:34:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:34:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-08-22 18:34:28,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:34:28,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665066851] [2020-08-22 18:34:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:34:28,858 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:34:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:34:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:34:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:34:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:34:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:34:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 18:34:29,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665066851] [2020-08-22 18:34:29,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:34:29,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:34:29,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873363642] [2020-08-22 18:34:29,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:34:29,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:34:29,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:34:29,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:34:29,025 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-08-22 18:34:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:34:29,116 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 18:34:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:34:29,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-08-22 18:34:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:34:29,118 INFO L225 Difference]: With dead ends: 31 [2020-08-22 18:34:29,118 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 18:34:29,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 18:34:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 18:34:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 18:34:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 18:34:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 18:34:29,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-08-22 18:34:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:34:29,121 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 18:34:29,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:34:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 18:34:29,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 18:34:29,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:34:29,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 18:34:29,324 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,324 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,324 INFO L264 CegarLoopResult]: At program point hanoiEXIT(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-08-22 18:34:29,325 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-08-22 18:34:29,325 INFO L264 CegarLoopResult]: At program point hanoiFINAL(lines 18 23) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-08-22 18:34:29,325 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-22 18:34:29,325 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-08-22 18:34:29,325 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-08-22 18:34:29,326 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret0|) (= |hanoi_#t~ret0| 1)) [2020-08-22 18:34:29,326 INFO L271 CegarLoopResult]: At program point L19(lines 19 21) the Hoare annotation is: true [2020-08-22 18:34:29,326 INFO L264 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (or (and (= |hanoi_#t~ret0| 1) (<= 3 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret0|) (<= 7 |hanoi_#res|))) [2020-08-22 18:34:29,326 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,326 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,326 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,327 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:34:29,327 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-08-22 18:34:29,327 INFO L264 CegarLoopResult]: At program point L32(lines 32 36) the Hoare annotation is: (<= 1 main_~result~0) [2020-08-22 18:34:29,327 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) the Hoare annotation is: false [2020-08-22 18:34:29,327 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-08-22 18:34:29,328 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-08-22 18:34:29,328 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-08-22 18:34:29,328 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-08-22 18:34:29,328 INFO L264 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (<= 1 |main_#t~ret2|) [2020-08-22 18:34:29,328 INFO L271 CegarLoopResult]: At program point L28(lines 28 30) the Hoare annotation is: true [2020-08-22 18:34:29,328 INFO L264 CegarLoopResult]: At program point L31-3(line 31) the Hoare annotation is: (and (<= 1 |main_#t~ret2|) (<= 1 main_~result~0)) [2020-08-22 18:34:29,329 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-08-22 18:34:29,329 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-08-22 18:34:29,329 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 37) the Hoare annotation is: true [2020-08-22 18:34:29,329 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 37) the Hoare annotation is: true [2020-08-22 18:34:29,330 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-08-22 18:34:29,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:34:29 BoogieIcfgContainer [2020-08-22 18:34:29,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:34:29,350 INFO L168 Benchmark]: Toolchain (without parser) took 1874.95 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.3 MB in the beginning and 191.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,351 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.86 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,353 INFO L168 Benchmark]: Boogie Preprocessor took 100.23 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 181.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,354 INFO L168 Benchmark]: RCFGBuilder took 260.03 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,355 INFO L168 Benchmark]: TraceAbstraction took 1266.81 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 168.2 MB in the beginning and 191.6 MB in the end (delta: -23.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:34:29,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.86 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.23 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 181.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 260.03 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1266.81 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 168.2 MB in the beginning and 191.6 MB in the end (delta: -23.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 18]: Procedure Contract for hanoi Derived contract for procedure hanoi: \result == 1 || 3 <= \result - ProcedureContractResult [Line: 26]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 9 SDslu, 320 SDs, 0 SdLazy, 87 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 39 PreInvPairs, 68 NumberOfFragments, 80 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...