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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:59:05,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:59:05,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:59:05,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:59:05,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:59:05,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:59:05,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:59:05,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:59:05,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:59:05,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:59:05,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:59:05,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:59:05,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:59:05,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:59:05,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:59:05,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:59:05,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:59:05,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:59:05,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:59:05,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:59:05,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:59:05,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:59:05,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:59:05,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:59:05,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 02:59:05,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:59:05,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:59:05,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:59:05,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 02:59:05,782 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:59:05,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:59:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:59:05,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:59:05,784 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:59:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:59:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:59:05,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:59:05,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:59:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:59:05,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:59:05,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:59:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:59:05,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:59:05,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:59:05,787 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:59:05,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:59:05,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:59:05,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:59:05,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:59:05,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:59:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:59:05,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:59:05,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:59:05,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:59:05,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:59:05,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:59:05,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:59:05,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:59:05,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:59:05,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:59:05,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:59:05,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:59:05,869 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:59:05,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2019-09-08 02:59:05,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272b69db9/6a604dfb8659473b8530164fa8d02670/FLAGd77db3381 [2019-09-08 02:59:06,360 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:59:06,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2019-09-08 02:59:06,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272b69db9/6a604dfb8659473b8530164fa8d02670/FLAGd77db3381 [2019-09-08 02:59:06,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272b69db9/6a604dfb8659473b8530164fa8d02670 [2019-09-08 02:59:06,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:59:06,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:59:06,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:59:06,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:59:06,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:59:06,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:59:06" (1/1) ... [2019-09-08 02:59:06,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0b1624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:06, skipping insertion in model container [2019-09-08 02:59:06,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:59:06" (1/1) ... [2019-09-08 02:59:06,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:59:06,828 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:59:07,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:59:07,013 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:59:07,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:59:07,042 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:59:07,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07 WrapperNode [2019-09-08 02:59:07,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:59:07,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:59:07,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:59:07,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:59:07,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (1/1) ... [2019-09-08 02:59:07,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:59:07,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:59:07,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:59:07,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:59:07,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (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 [2019-09-08 02:59:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:59:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:59:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 02:59:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:59:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:59:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 02:59:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 02:59:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 02:59:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:59:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:59:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:59:07,452 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:59:07,453 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-08 02:59:07,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:59:07 BoogieIcfgContainer [2019-09-08 02:59:07,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:59:07,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:59:07,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:59:07,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:59:07,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:59:06" (1/3) ... [2019-09-08 02:59:07,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2481795d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:59:07, skipping insertion in model container [2019-09-08 02:59:07,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:59:07" (2/3) ... [2019-09-08 02:59:07,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2481795d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:59:07, skipping insertion in model container [2019-09-08 02:59:07,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:59:07" (3/3) ... [2019-09-08 02:59:07,476 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2019-09-08 02:59:07,500 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:59:07,514 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:59:07,532 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:59:07,563 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:59:07,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:59:07,564 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:59:07,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:59:07,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:59:07,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:59:07,565 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:59:07,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:59:07,565 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:59:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-08 02:59:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-08 02:59:07,585 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:59:07,586 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:59:07,588 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:59:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:59:07,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1213508388, now seen corresponding path program 1 times [2019-09-08 02:59:07,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:59:07,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:59:07,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:07,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:07,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:59:07,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:59:07,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:59:07,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:59:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:59:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:59:07,810 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-09-08 02:59:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:59:07,919 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2019-09-08 02:59:07,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 02:59:07,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-09-08 02:59:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:59:07,929 INFO L225 Difference]: With dead ends: 57 [2019-09-08 02:59:07,929 INFO L226 Difference]: Without dead ends: 28 [2019-09-08 02:59:07,933 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:59:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-08 02:59:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-08 02:59:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-08 02:59:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-08 02:59:07,972 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2019-09-08 02:59:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:59:07,973 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-08 02:59:07,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:59:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-08 02:59:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 02:59:07,975 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:59:07,975 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:59:07,975 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:59:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:59:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 542305890, now seen corresponding path program 1 times [2019-09-08 02:59:07,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:59:07,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:59:07,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:07,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:07,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:59:08,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:59:08,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 02:59:08,056 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:59:08,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:59:08,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:59:08,057 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2019-09-08 02:59:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:59:08,228 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-09-08 02:59:08,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 02:59:08,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-09-08 02:59:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:59:08,230 INFO L225 Difference]: With dead ends: 40 [2019-09-08 02:59:08,230 INFO L226 Difference]: Without dead ends: 38 [2019-09-08 02:59:08,231 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 02:59:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-08 02:59:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2019-09-08 02:59:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-08 02:59:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-08 02:59:08,241 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2019-09-08 02:59:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:59:08,241 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-08 02:59:08,241 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:59:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-08 02:59:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 02:59:08,243 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:59:08,243 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:59:08,243 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:59:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:59:08,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1063580357, now seen corresponding path program 1 times [2019-09-08 02:59:08,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:59:08,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:59:08,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:08,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:08,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:59:08,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:59:08,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:59:08,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:59:08,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:59:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:59:08,300 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2019-09-08 02:59:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:59:08,384 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-08 02:59:08,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 02:59:08,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-08 02:59:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:59:08,387 INFO L225 Difference]: With dead ends: 45 [2019-09-08 02:59:08,388 INFO L226 Difference]: Without dead ends: 43 [2019-09-08 02:59:08,390 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:59:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-08 02:59:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-08 02:59:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 02:59:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-09-08 02:59:08,413 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 20 [2019-09-08 02:59:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:59:08,413 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-09-08 02:59:08,414 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:59:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-09-08 02:59:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-08 02:59:08,415 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:59:08,415 INFO L399 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] [2019-09-08 02:59:08,416 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:59:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:59:08,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1462671860, now seen corresponding path program 1 times [2019-09-08 02:59:08,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:59:08,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:59:08,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:08,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:08,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:59:08,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:59:08,533 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:59:08,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:08,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 02:59:08,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:59:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 02:59:08,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 02:59:08,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-09-08 02:59:08,670 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 02:59:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 02:59:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 02:59:08,671 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2019-09-08 02:59:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:59:09,124 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2019-09-08 02:59:09,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 02:59:09,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-08 02:59:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:59:09,127 INFO L225 Difference]: With dead ends: 108 [2019-09-08 02:59:09,127 INFO L226 Difference]: Without dead ends: 73 [2019-09-08 02:59:09,128 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-09-08 02:59:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-09-08 02:59:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2019-09-08 02:59:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-08 02:59:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-09-08 02:59:09,159 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2019-09-08 02:59:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:59:09,160 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-09-08 02:59:09,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 02:59:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2019-09-08 02:59:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-08 02:59:09,162 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:59:09,162 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:59:09,162 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:59:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:59:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1830678608, now seen corresponding path program 1 times [2019-09-08 02:59:09,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:59:09,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:59:09,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:09,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:59:09,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:59:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:59:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 02:59:09,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:59:09,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 02:59:09,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:59:09,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:59:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:59:09,249 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 6 states. [2019-09-08 02:59:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:59:09,318 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-09-08 02:59:09,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 02:59:09,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-09-08 02:59:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:59:09,320 INFO L225 Difference]: With dead ends: 46 [2019-09-08 02:59:09,320 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 02:59:09,321 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-08 02:59:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 02:59:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 02:59:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 02:59:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 02:59:09,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-08 02:59:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:59:09,322 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 02:59:09,322 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:59:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 02:59:09,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 02:59:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 02:59:09,609 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 02:59:09,609 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 02:59:09,609 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 02:59:09,609 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 02:59:09,609 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 02:59:09,609 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 02:59:09,610 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-08 02:59:09,610 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-08 02:59:09,610 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 34) no Hoare annotation was computed. [2019-09-08 02:59:09,610 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0))) [2019-09-08 02:59:09,610 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2019-09-08 02:59:09,610 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 31) no Hoare annotation was computed. [2019-09-08 02:59:09,611 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 31) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-08 02:59:09,611 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2019-09-08 02:59:09,611 INFO L443 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2019-09-08 02:59:09,611 INFO L446 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2019-09-08 02:59:09,612 INFO L443 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2019-09-08 02:59:09,612 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 30) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-08 02:59:09,612 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2019-09-08 02:59:09,612 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 34) no Hoare annotation was computed. [2019-09-08 02:59:09,612 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 34) the Hoare annotation is: true [2019-09-08 02:59:09,613 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0))) [2019-09-08 02:59:09,613 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-09-08 02:59:09,614 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-08 02:59:09,614 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-08 02:59:09,615 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-08 02:59:09,615 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-08 02:59:09,616 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-08 02:59:09,616 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-08 02:59:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 02:59:09 BoogieIcfgContainer [2019-09-08 02:59:09,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 02:59:09,637 INFO L168 Benchmark]: Toolchain (without parser) took 2842.67 ms. Allocated memory was 131.1 MB in the beginning and 217.1 MB in the end (delta: 86.0 MB). Free memory was 86.6 MB in the beginning and 120.1 MB in the end (delta: -33.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,638 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 131.1 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.24 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 77.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,640 INFO L168 Benchmark]: Boogie Preprocessor took 107.98 ms. Allocated memory was 131.1 MB in the beginning and 196.6 MB in the end (delta: 65.5 MB). Free memory was 77.0 MB in the beginning and 173.0 MB in the end (delta: -96.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,641 INFO L168 Benchmark]: RCFGBuilder took 304.64 ms. Allocated memory is still 196.6 MB. Free memory was 173.0 MB in the beginning and 159.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,643 INFO L168 Benchmark]: TraceAbstraction took 2176.03 ms. Allocated memory was 196.6 MB in the beginning and 217.1 MB in the end (delta: 20.4 MB). Free memory was 159.3 MB in the beginning and 120.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2019-09-08 02:59:09,652 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 131.1 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.24 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 77.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.98 ms. Allocated memory was 131.1 MB in the beginning and 196.6 MB in the end (delta: 65.5 MB). Free memory was 77.0 MB in the beginning and 173.0 MB in the end (delta: -96.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.64 ms. Allocated memory is still 196.6 MB. Free memory was 173.0 MB in the beginning and 159.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2176.03 ms. Allocated memory was 196.6 MB in the beginning and 217.1 MB in the end (delta: 20.4 MB). Free memory was 159.3 MB in the beginning and 120.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 20]: Loop Invariant Derived loop invariant: (2 * i <= j && k <= n) && n <= k - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((2 * i <= j && j + 1 <= n) && 2 * i <= k) && k <= n - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: k <= n && n <= k - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 72 SDslu, 384 SDs, 0 SdLazy, 263 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 24 PreInvPairs, 38 NumberOfFragments, 103 HoareAnnotationTreeSize, 24 FomulaSimplifications, 498 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 260 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 1 QuantifiedInterpolants, 6440 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 19/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...