java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:34:27,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:34:27,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:34:27,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:34:27,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:34:27,928 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:34:27,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:34:27,932 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:34:27,934 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:34:27,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:34:27,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:34:27,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:34:27,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:34:27,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:34:27,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:34:27,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:34:27,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:34:27,962 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:34:27,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:34:27,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:34:27,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:34:27,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:34:27,974 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:34:27,974 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:34:27,974 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:34:27,975 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:34:27,978 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:34:27,978 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:34:27,981 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:34:27,983 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:34:27,983 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:34:27,984 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 12:34:27,984 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 12:34:27,985 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 12:34:27,987 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 12:34:27,988 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 12:34:27,989 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 12:34:28,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:34:28,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:34:28,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:34:28,017 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:34:28,017 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:34:28,017 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:34:28,017 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:34:28,018 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:34:28,018 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:34:28,018 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:34:28,018 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:34:28,019 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:34:28,019 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:34:28,019 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:34:28,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:34:28,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:34:28,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:34:28,020 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:34:28,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:34:28,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:34:28,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:34:28,021 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:34:28,021 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:34:28,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:34:28,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:34:28,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:34:28,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:34:28,022 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:34:28,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:34:28,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:34:28,023 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:34:28,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:34:28,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:34:28,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:34:28,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:34:28,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:34:28,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:34:28,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:34:28,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:34:28,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:34:28,093 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:34:28,094 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-24 12:34:28,168 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d14c404b/187ebe01839846398dadfe2043016b4c/FLAG3d036c246 [2018-10-24 12:34:28,647 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:34:28,647 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-24 12:34:28,653 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d14c404b/187ebe01839846398dadfe2043016b4c/FLAG3d036c246 [2018-10-24 12:34:28,675 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d14c404b/187ebe01839846398dadfe2043016b4c [2018-10-24 12:34:28,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:34:28,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:34:28,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:34:28,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:34:28,695 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:34:28,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b462e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28, skipping insertion in model container [2018-10-24 12:34:28,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:34:28,732 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:34:28,899 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:34:28,903 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:34:28,922 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:34:28,937 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:34:28,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28 WrapperNode [2018-10-24 12:34:28,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:34:28,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:34:28,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:34:28,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:34:28,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:34:28,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:34:28,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:34:28,961 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:34:28,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... [2018-10-24 12:34:28,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:34:28,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:34:28,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:34:28,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:34:28,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:34:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:34:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:34:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:34:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:34:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:34:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:34:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:34:29,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:34:29,522 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:34:29,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:29 BoogieIcfgContainer [2018-10-24 12:34:29,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:34:29,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:34:29,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:34:29,527 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:34:29,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:34:28" (1/3) ... [2018-10-24 12:34:29,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0f5f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:29, skipping insertion in model container [2018-10-24 12:34:29,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:28" (2/3) ... [2018-10-24 12:34:29,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0f5f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:29, skipping insertion in model container [2018-10-24 12:34:29,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:29" (3/3) ... [2018-10-24 12:34:29,531 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-10-24 12:34:29,542 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:34:29,550 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:34:29,564 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:34:29,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:34:29,600 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:34:29,600 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:34:29,600 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:34:29,600 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:34:29,600 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:34:29,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:34:29,601 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:34:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-10-24 12:34:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 12:34:29,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:29,627 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:34:29,630 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:29,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:29,636 INFO L82 PathProgramCache]: Analyzing trace with hash 416534784, now seen corresponding path program 1 times [2018-10-24 12:34:29,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:29,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:29,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:29,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:29,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:29,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:34:29,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:34:29,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:34:29,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:34:29,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:34:29,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:34:29,856 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-10-24 12:34:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:30,036 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2018-10-24 12:34:30,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:34:30,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-10-24 12:34:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:30,047 INFO L225 Difference]: With dead ends: 63 [2018-10-24 12:34:30,047 INFO L226 Difference]: Without dead ends: 31 [2018-10-24 12:34:30,052 INFO L605 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 [2018-10-24 12:34:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-24 12:34:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-24 12:34:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-24 12:34:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-10-24 12:34:30,095 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2018-10-24 12:34:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:30,096 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-10-24 12:34:30,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:34:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-10-24 12:34:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 12:34:30,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:30,098 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:34:30,099 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:30,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1670630326, now seen corresponding path program 1 times [2018-10-24 12:34:30,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:30,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:30,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:30,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:30,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:30,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:34:30,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 12:34:30,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:34:30,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 12:34:30,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 12:34:30,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:34:30,257 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2018-10-24 12:34:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:30,790 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-10-24 12:34:30,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:34:30,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-10-24 12:34:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:30,792 INFO L225 Difference]: With dead ends: 44 [2018-10-24 12:34:30,792 INFO L226 Difference]: Without dead ends: 42 [2018-10-24 12:34:30,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 12:34:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-24 12:34:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2018-10-24 12:34:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-24 12:34:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-10-24 12:34:30,803 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2018-10-24 12:34:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:30,803 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-10-24 12:34:30,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 12:34:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-10-24 12:34:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 12:34:30,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:30,805 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:34:30,805 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:30,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:30,805 INFO L82 PathProgramCache]: Analyzing trace with hash 767827044, now seen corresponding path program 1 times [2018-10-24 12:34:30,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:30,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:30,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:30,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:30,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:31,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:31,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:34:31,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-10-24 12:34:31,046 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [33], [53], [67], [70], [72], [75], [77], [78], [79], [80], [84], [85], [86] [2018-10-24 12:34:31,078 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:34:31,078 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:34:31,272 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:34:31,274 INFO L272 AbstractInterpreter]: Visited 21 different actions 26 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-10-24 12:34:31,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:31,322 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:34:31,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:31,323 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:34:31,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:31,338 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:34:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:31,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:34:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:31,564 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:34:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:31,630 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:34:31,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 9 [2018-10-24 12:34:31,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:34:31,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:34:31,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:34:31,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:34:31,632 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-10-24 12:34:31,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:31,764 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-10-24 12:34:31,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:34:31,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-10-24 12:34:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:31,767 INFO L225 Difference]: With dead ends: 50 [2018-10-24 12:34:31,767 INFO L226 Difference]: Without dead ends: 48 [2018-10-24 12:34:31,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-24 12:34:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-24 12:34:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-24 12:34:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-24 12:34:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-10-24 12:34:31,792 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2018-10-24 12:34:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:31,792 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-10-24 12:34:31,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:34:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-10-24 12:34:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 12:34:31,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:31,796 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:34:31,796 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:31,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash -676333797, now seen corresponding path program 1 times [2018-10-24 12:34:31,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:31,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:31,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:31,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:31,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:32,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:32,219 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:34:32,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-10-24 12:34:32,220 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [33], [36], [40], [43], [53], [57], [67], [70], [72], [75], [77], [78], [79], [80], [84], [85], [86] [2018-10-24 12:34:32,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:34:32,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:34:32,314 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:34:32,314 INFO L272 AbstractInterpreter]: Visited 25 different actions 70 times. Merged at 8 different actions 16 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-10-24 12:34:32,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:32,345 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:34:32,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:32,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:34:32,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:32,356 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:34:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:32,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:34:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:34:32,519 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:34:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:34:32,595 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:34:32,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2018-10-24 12:34:32,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:34:32,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:34:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:34:32,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-24 12:34:32,597 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 5 states. [2018-10-24 12:34:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:32,813 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2018-10-24 12:34:32,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:34:32,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-10-24 12:34:32,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:32,817 INFO L225 Difference]: With dead ends: 123 [2018-10-24 12:34:32,817 INFO L226 Difference]: Without dead ends: 83 [2018-10-24 12:34:32,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:34:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-24 12:34:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 55. [2018-10-24 12:34:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-24 12:34:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2018-10-24 12:34:32,843 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 28 [2018-10-24 12:34:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:32,843 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2018-10-24 12:34:32,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:34:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2018-10-24 12:34:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 12:34:32,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:32,845 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1] [2018-10-24 12:34:32,845 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:32,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 542199398, now seen corresponding path program 1 times [2018-10-24 12:34:32,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:32,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:32,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:32,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:32,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 12:34:33,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:33,107 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:34:33,107 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-10-24 12:34:33,108 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [33], [36], [40], [43], [45], [48], [53], [57], [67], [70], [72], [75], [77], [78], [79], [80], [82], [83], [84], [85], [86] [2018-10-24 12:34:33,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:34:33,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:34:33,361 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:34:33,361 INFO L272 AbstractInterpreter]: Visited 29 different actions 158 times. Merged at 11 different actions 43 times. Widened at 2 different actions 3 times. Found 6 fixpoints after 4 different actions. Largest state had 9 variables. [2018-10-24 12:34:33,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:33,374 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:34:33,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:33,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:34:33,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:33,383 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:34:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:33,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:34:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:34:33,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:34:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 12:34:33,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:34:33,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2018-10-24 12:34:33,692 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:34:33,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:34:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:34:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-10-24 12:34:33,693 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 11 states. [2018-10-24 12:34:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:34,318 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2018-10-24 12:34:34,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 12:34:34,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-10-24 12:34:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:34,323 INFO L225 Difference]: With dead ends: 109 [2018-10-24 12:34:34,323 INFO L226 Difference]: Without dead ends: 82 [2018-10-24 12:34:34,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-10-24 12:34:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-24 12:34:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2018-10-24 12:34:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-24 12:34:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2018-10-24 12:34:34,350 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 36 [2018-10-24 12:34:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:34,351 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2018-10-24 12:34:34,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:34:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2018-10-24 12:34:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 12:34:34,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:34:34,353 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:34:34,353 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:34:34,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1487760091, now seen corresponding path program 1 times [2018-10-24 12:34:34,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:34:34,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:34,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:34,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:34:34,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:34:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 12:34:34,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:34,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:34:34,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2018-10-24 12:34:34,528 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [31], [33], [36], [40], [43], [53], [57], [61], [67], [70], [72], [75], [77], [78], [79], [80], [84], [85], [86], [87] [2018-10-24 12:34:34,530 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:34:34,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:34:34,665 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:34:34,665 INFO L272 AbstractInterpreter]: Visited 28 different actions 138 times. Merged at 13 different actions 49 times. Widened at 2 different actions 4 times. Found 11 fixpoints after 4 different actions. Largest state had 9 variables. [2018-10-24 12:34:34,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:34:34,688 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:34:34,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:34:34,688 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:34:34,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:34:34,698 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:34:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:34:34,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:34:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 12:34:34,837 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:34:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 12:34:34,906 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:34:34,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 14 [2018-10-24 12:34:34,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:34:34,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:34:34,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:34:34,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-10-24 12:34:34,908 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 4 states. [2018-10-24 12:34:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:34:34,974 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2018-10-24 12:34:34,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:34:34,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-10-24 12:34:34,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:34:34,976 INFO L225 Difference]: With dead ends: 111 [2018-10-24 12:34:34,976 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:34:34,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-10-24 12:34:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:34:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:34:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:34:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:34:34,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-10-24 12:34:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:34:34,979 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:34:34,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:34:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:34:34,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:34:34,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:34:34,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:34:35,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:34:35,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:34:35,284 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-24 12:34:35,285 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:34:35,285 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:34:35,285 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-24 12:34:35,285 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:34:35,285 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:34:35,285 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (< main_~j~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2018-10-24 12:34:35,286 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (< main_~j~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2018-10-24 12:34:35,286 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 34) no Hoare annotation was computed. [2018-10-24 12:34:35,286 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (< main_~j~0 main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0))) [2018-10-24 12:34:35,286 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2018-10-24 12:34:35,286 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 31) no Hoare annotation was computed. [2018-10-24 12:34:35,286 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 31) no Hoare annotation was computed. [2018-10-24 12:34:35,286 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2018-10-24 12:34:35,286 INFO L421 ceAbstractionStarter]: At program point L19-4(lines 19 31) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 main_~n~0)) (.cse1 (<= main_~n~0 main_~k~0))) (or (and .cse0 (<= main_~i~0 0) .cse1) (and .cse0 .cse1 (<= main_~n~0 main_~j~0)))) [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-10-24 12:34:35,287 INFO L428 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-10-24 12:34:35,287 INFO L421 ceAbstractionStarter]: At program point L20-3(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)) [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 34) no Hoare annotation was computed. [2018-10-24 12:34:35,287 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 34) the Hoare annotation is: true [2018-10-24 12:34:35,287 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 24) no Hoare annotation was computed. [2018-10-24 12:34:35,288 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (< main_~j~0 main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0))) [2018-10-24 12:34:35,288 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-24 12:34:35,288 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:34:35,288 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:34:35,288 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:34:35,288 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:34:35,288 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:34:35,289 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:34:35,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:34:35 BoogieIcfgContainer [2018-10-24 12:34:35,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:34:35,303 INFO L168 Benchmark]: Toolchain (without parser) took 6615.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -438.6 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. [2018-10-24 12:34:35,305 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:34:35,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:34:35,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:34:35,307 INFO L168 Benchmark]: Boogie Preprocessor took 29.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:34:35,308 INFO L168 Benchmark]: RCFGBuilder took 532.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:34:35,309 INFO L168 Benchmark]: TraceAbstraction took 5778.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 342.6 MB). Peak memory consumption was 342.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:34:35,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 22.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 532.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5778.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 342.6 MB). Peak memory consumption was 342.6 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: ((j < n && 2 * i <= j) && 2 * i <= k) && k <= n - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((k <= n && i <= 0) && n <= k) || ((k <= n && n <= k) && n <= j) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 125 SDslu, 463 SDs, 0 SdLazy, 350 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 34 PreInvPairs, 52 NumberOfFragments, 108 HoareAnnotationTreeSize, 34 FomulaSimplifications, 908 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 164 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 421 ConstructedInterpolants, 5 QuantifiedInterpolants, 29781 SizeOfPredicates, 14 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 137/174 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...