/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:13:05,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:13:05,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:13:05,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:13:05,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:13:05,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:13:05,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:13:05,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:13:05,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:13:05,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:13:05,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:13:05,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:13:05,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:13:05,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:13:05,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:13:05,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:13:05,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:13:05,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:13:05,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:13:05,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:13:05,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:13:05,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:13:05,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:13:05,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:13:05,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:13:05,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:13:05,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:13:05,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:13:05,830 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 [2020-08-18 17:13:05,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:13:05,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:13:05,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:13:05,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:13:05,871 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:13:05,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:13:05,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:13:05,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:13:05,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:13:05,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:13:05,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:13:05,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:13:05,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:13:05,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:13:05,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:13:05,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:13:05,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:13:05,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:13:05,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:13:05,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:13:05,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:13:05,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:13:05,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:13:05,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:13:05,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:13:05,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:13:05,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:13:05,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:13:05,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:13:05,877 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:13:06,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:13:06,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:13:06,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:13:06,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:13:06,217 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:13:06,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-08-18 17:13:06,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92b4566c3/0b308d02ec04453588351c5dec4fff7b/FLAGfea6e11ab [2020-08-18 17:13:06,691 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:13:06,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-08-18 17:13:06,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92b4566c3/0b308d02ec04453588351c5dec4fff7b/FLAGfea6e11ab [2020-08-18 17:13:07,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92b4566c3/0b308d02ec04453588351c5dec4fff7b [2020-08-18 17:13:07,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:13:07,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:13:07,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:13:07,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:13:07,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:13:07,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07, skipping insertion in model container [2020-08-18 17:13:07,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:13:07,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:13:07,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:13:07,272 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:13:07,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:13:07,305 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:13:07,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07 WrapperNode [2020-08-18 17:13:07,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:13:07,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:13:07,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:13:07,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:13:07,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (1/1) ... [2020-08-18 17:13:07,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:13:07,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:13:07,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:13:07,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:13:07,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (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 [2020-08-18 17:13:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:13:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:13:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:13:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 17:13:07,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:13:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:13:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:13:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:13:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 17:13:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:13:07,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:13:07,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:13:07,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:13:07,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:13:07,668 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 17:13:07,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:13:07 BoogieIcfgContainer [2020-08-18 17:13:07,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:13:07,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:13:07,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:13:07,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:13:07,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:13:07" (1/3) ... [2020-08-18 17:13:07,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfc56cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:13:07, skipping insertion in model container [2020-08-18 17:13:07,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:13:07" (2/3) ... [2020-08-18 17:13:07,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfc56cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:13:07, skipping insertion in model container [2020-08-18 17:13:07,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:13:07" (3/3) ... [2020-08-18 17:13:07,680 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-08-18 17:13:07,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:13:07,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:13:07,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:13:07,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:13:07,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:13:07,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:13:07,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:13:07,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:13:07,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:13:07,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:13:07,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:13:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-18 17:13:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 17:13:07,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:13:07,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:13:07,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:13:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:13:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash -677001103, now seen corresponding path program 1 times [2020-08-18 17:13:07,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:13:07,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301457656] [2020-08-18 17:13:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:13:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:13:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:13:08,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301457656] [2020-08-18 17:13:08,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:13:08,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:13:08,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669868844] [2020-08-18 17:13:08,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:13:08,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:13:08,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:13:08,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:13:08,154 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-08-18 17:13:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:13:08,305 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-18 17:13:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:13:08,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-18 17:13:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:13:08,315 INFO L225 Difference]: With dead ends: 41 [2020-08-18 17:13:08,316 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 17:13:08,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:13:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 17:13:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 17:13:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 17:13:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-18 17:13:08,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-08-18 17:13:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:13:08,353 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-18 17:13:08,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:13:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-18 17:13:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 17:13:08,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:13:08,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:13:08,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:13:08,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:13:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:13:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash 523340046, now seen corresponding path program 1 times [2020-08-18 17:13:08,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:13:08,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696231389] [2020-08-18 17:13:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:13:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:13:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:13:08,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696231389] [2020-08-18 17:13:08,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:13:08,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 17:13:08,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733146020] [2020-08-18 17:13:08,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:13:08,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:13:08,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:13:08,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:13:08,529 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-08-18 17:13:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:13:08,616 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-08-18 17:13:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:13:08,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-18 17:13:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:13:08,620 INFO L225 Difference]: With dead ends: 20 [2020-08-18 17:13:08,620 INFO L226 Difference]: Without dead ends: 15 [2020-08-18 17:13:08,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:13:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-18 17:13:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-18 17:13:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-18 17:13:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-08-18 17:13:08,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-08-18 17:13:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:13:08,631 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-08-18 17:13:08,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:13:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-08-18 17:13:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 17:13:08,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:13:08,632 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:13:08,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:13:08,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:13:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:13:08,633 INFO L82 PathProgramCache]: Analyzing trace with hash -920789999, now seen corresponding path program 2 times [2020-08-18 17:13:08,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:13:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048857704] [2020-08-18 17:13:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:13:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:13:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:13:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:13:08,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048857704] [2020-08-18 17:13:08,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:13:08,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 17:13:08,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695455304] [2020-08-18 17:13:08,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:13:08,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:13:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:13:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:13:08,802 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-08-18 17:13:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:13:08,895 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-08-18 17:13:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:13:08,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-08-18 17:13:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:13:08,896 INFO L225 Difference]: With dead ends: 15 [2020-08-18 17:13:08,896 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:13:08,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:13:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:13:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:13:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:13:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:13:08,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-08-18 17:13:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:13:08,898 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:13:08,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:13:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:13:08,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:13:08,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:13:08,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:13:08,973 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 17:13:08,974 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:13:08,974 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:13:08,974 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 17:13:08,974 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 17:13:08,974 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 17:13:08,975 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 17:13:08,975 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 17:13:08,975 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 17:13:08,975 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 17:13:08,975 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-08-18 17:13:08,975 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-18 17:13:08,976 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-08-18 17:13:08,977 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~res~0 .cse0))) [2020-08-18 17:13:08,978 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 17:13:08,978 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~res~0) (<= main_~res~0 .cse0))) [2020-08-18 17:13:08,978 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-18 17:13:08,978 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-08-18 17:13:08,978 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 17:13:08,979 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 17:13:08,979 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 17:13:08,979 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 17:13:08,979 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 17:13:08,979 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 17:13:09,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:13:09 BoogieIcfgContainer [2020-08-18 17:13:09,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:13:09,006 INFO L168 Benchmark]: Toolchain (without parser) took 1923.47 ms. Allocated memory was 142.6 MB in the beginning and 231.7 MB in the end (delta: 89.1 MB). Free memory was 105.7 MB in the beginning and 182.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,008 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.49 ms. Allocated memory is still 142.6 MB. Free memory was 105.5 MB in the beginning and 96.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,010 INFO L168 Benchmark]: Boogie Preprocessor took 100.70 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 183.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,012 INFO L168 Benchmark]: RCFGBuilder took 264.20 ms. Allocated memory is still 203.9 MB. Free memory was 183.6 MB in the beginning and 170.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,019 INFO L168 Benchmark]: TraceAbstraction took 1328.41 ms. Allocated memory was 203.9 MB in the beginning and 231.7 MB in the end (delta: 27.8 MB). Free memory was 170.0 MB in the beginning and 182.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:13:09,029 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.49 ms. Allocated memory is still 142.6 MB. Free memory was 105.5 MB in the beginning and 96.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.70 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 183.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.20 ms. Allocated memory is still 203.9 MB. Free memory was 183.6 MB in the beginning and 170.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1328.41 ms. Allocated memory was 203.9 MB in the beginning and 231.7 MB in the end (delta: 27.8 MB). Free memory was 170.0 MB in the beginning and 182.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 21]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res + cnt <= a + b) && res <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 16 SDslu, 129 SDs, 0 SdLazy, 74 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 36 HoareAnnotationTreeSize, 10 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2054 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...